Vapor pressure type
The bellows action is applied to the elastic force of the spring , the spring is knob by the control board of the control, the capillary tube on the outlet of an intake air of the air conditioning machine room, the temperature of the return air chamber circulation react. When the room temperature up to the set temperature, the temperature-sensitive agent in the capillaries and bellows gas expansion, the switch contact connected to the bellows elongation and to overcome the force of the spring , the compressor operation, the system refrigerant, until the room temperature further reduced to the set temperature, the temperature sensing package gas contraction, the bellows contracts, together with the spring action, the switch is placed in the OFF position, the motor of the compressor circuit is cut off. This repeated action, so as to achieve the purpose of controlling the room temperature.
Electronic temperature controller
Electronic thermal controller (resistive) is measured using resistance temperature sensing method, commonly used platinum wire, copper, tungsten, and semiconductor (thermistor) temperature resistance, these resistors have their own excellent indeed point. Most home air conditioning sensor based on thermistor. Thermistor type thermostat is made according to the principle of a Wheatstone bridge (left) is a Wheatstone bridge. On the BD ends connected to the power supply E, according to Kirchhoff's law, when the electrical resistance of the bridge R1 × R4 = R2 × R3 is when the potential of the two points of A and C are equal, no current flows between the output terminal A and C the size of the resistance of a thermistor R1 with the rise or fall of the ambient temperature changes, so that the balance of damage, the AC output current. Thus, when constituting the thermostat can easily select the appropriate thermistor to change the temperature adjustment range, and the operating temperature.
Tuesday, October 16, 2012
Tuesday, October 9, 2012
TinySwitch-II-based micro-switch power optimization design
Series products for less than 23W low-power, low-cost and efficient switching power supply. For example, in the IC card paid watt-hour meter miniaturized switching power supply module, mobile phone battery constant voltage / constant current charger, power adapter (Powersupplyadapter), microcomputers, color TV, laser printers, video recorders, camcorders and other high-end household appliances the standby power supply (Standbypowersupply), also apply to ISDN and DSL network terminal equipment.
TinySwitch-II is easy to realize the optimization of the switching power supply design. Its switching frequency up to 132kHz, high-frequency transformer allows EE13 or EF12.6 of miniaturization cores and achieve high power efficiency. TinySwitch-II has a frequency jitter characteristics, only an inductor (You can also use two small resistors) and two capacitors in the output power less than 3W or less efficient acceptable to EMI filtering. Even in short-circuit conditions, do not need to use high-power rectifier.
Typical applications of 1 TinySwitch-II
1.1 2.5W constant current / constant voltage output of mobile phone battery charger
Mobile phone battery charger TNY264 (IC1) consisting of 2.5W (5V, 0.5A) AC wide range input circuit, as shown in Figure 1. RF fuse resistors. 85V ~ 265V AC VD1 ~ VD4 bridge rectifier, and then through the inductance L1 and C1, C2 consisting of π-type filter, the DC high voltage UI. R1 is L1 damping resistor. The use of the a TNY264 frequency jitter characteristics, and allows the use of a simple filter and low price of the security capacitor C8 (Y capacitors) can meet international standards suppression between primary and secondary conductive electromagnetic interference (EMI). Even under the most adverse circumstances the output capacitive load grounded shield to the increase in high-frequency transformer, able to effectively suppress EMI. Spike voltage protection circuit of a clamp diode VD6, capacitor C3 and resistor R2, can drain power MOSFET off limits in the safe range. IO lower than 500mA of output current, the voltage control loop work, the current control loop due to transistor VT cutoff does not work. At this point, the output voltage UO optocoupler IC2 (LTV817) LED's forward voltage drop (UF ≈ 1V) and the regulator VDZ regulator value (UZ = 3.9V) to jointly set, that of UO = UF + UZ ≈ 5V. Resistor R8 to the regulator to provide a bias current, so the VDZ stable current IZ close to a typical value. Secondary voltage via VD5 C5, L2 and C6 rectifier filter, the +5 V output voltage.
2.5w constant voltage and constant current cell phone battery charger
TinySwitch-II high switching frequency in the output rectifiers VD5 off the reverse recovery process will produce switching noise, easy to damage the rectifier. Although both ends in VD5 and on resistive and capacitive components in series of RC snubber circuit switching noise to play a certain extent, but the effect is still not ideal, Moreover, it will result in power loss in the resistance. The solution is in the secondary rectification filter series a bead.
Beads (Magneticbead) in recent years, the advent of an ultra-small amorphous alloy magnetic material, the case of two materials with ferrite. Similar to the commercially available bead appearance with plastic diode, tubular shape, but switch to magnetic materials package within small inductor and made to wear a wire. Dimensions of the common beads Φ2.5 × 3 (mm), Φ2.5 × 8 (mm), Φ3 × 5 (mm) and other specifications. Beads for chip switching power supply inductance is generally a few to tens of μH. The DC resistance of the beads is very small, and generally is 0.005Ω ~~ 0.01Ω. Usually noise filter can only absorb noise, are passive suppression; the bead role is different, can inhibit the generation of switching noise, therefore belongs to the active suppression-type, which is the fundamental difference between the two. The beads can be widely used in high-frequency switching power supply, video recorders, electronic measuring instruments, and a variety of very strict noise requirements of the circuit. The filter inductor L2 in Figure 1, on the selection of a 3.3μH the beads, can be filtered off VD5 switching noise generated in the reverse recovery process.
Transistor VT, current sense resistor R4 and optocoupler IC2 current control loop. When the output current IO is close to 500mA due to the voltage drop across R4 is elevated, so that the emitter voltage of transistor VT UBE also will increase, VT into the enlarged area, the current control loop starts to work, the output was constant current characteristics. Even if the output is short-circuit fault occurs, making IO ↑ UO → 0V, VT and optocoupler LED work properly able to maintain the total pressure drop of approximately 1.2V resistors R6 and R4. R3 is the base current limiting resistor.
1.2 15W PC, standby power circuit
An output power of 15W of the PC, the standby power supply circuit shown in Figure 2. The power supply provides two outputs: a main output of +5 V, 3A; auxiliary output compared to +12 V, 20mA. The total output power of 15.24W, power efficiency is higher than 78%. Circuit using two integrated circuits: the TNY267P type miniature monolithic switching power supply (IC1), SFH615-2 linear optocoupler (IC2). DC input voltage is 140V ~ 375V, this corresponds to the case of the AC input voltage is 230V ± 15% or 110/115V times of voltage input. The use of the TNY267P the undervoltage detection automatic restart and high-frequency switching characteristics, allows the use of smaller size, lower price EE22 high frequency transformer core. TNY267P chip is used in the form of a DIP-8 package, it can filter the output filter capacitor slowly discharges caused by auto-restart, burrs formed on the output voltage waveform. When the input voltage is below the undervoltage value, TNY267P automatically shutdown, play a protective role; work only when the input voltage is above the undervoltage threshold only. R2, R3 undervoltage threshold setting resistor. The total resistance of the two selected 4MΩ undervoltage threshold is set to DC 200V rectified DC high voltage UI must be higher than 200V in order to turn on the power. Once the power is turned on, it will continue to work until the UI down to 140V before shutdown. This lag shutdown characteristics, may be a standby power supply to provide the required holding time (Holdup).
The primary side auxiliary winding by VD2, C2 rectifier filter, +12 V output voltage, and power to TNY267P through R4. Work properly when TNY267P internal drain driver current source also stop charging on external bypass capacitor to reduce static losses in the meantime. R4 = 10kΩ, elect to bypass end to 640μA of the current, slightly higher than TNY267P current consumption, the excess part will be the chip internal zener clamp voltage of 6.3V security.
The secondary rectifier filter output of VD3, C6 and C7. L and C8 constitutes a rear stage filter mainly used to filter out the switching noise. When the output is short-circuited, automatic re-start circuitry limits the output current increases, and filtered out of VD3 overshoot voltage. By the optocoupler IC2 (SFH615-2), the regulator VDZ 5V output detection, R5 bias current to the regulator.
2 circuit design points
2.1 Use Caution
(1) The DC input voltage of the UI the minimum UImin may 90V to design. Enter a wide range of voltage (85V ~ 265V), the capacity of the input stage of the filter capacitor C1 according to the scale factor of 3μF / W to select; For example, when the output power PO = 10W, C1 = 30μF. For fixed voltage input AC 230V ± 15%, the ratio coefficient can be 1μF / W.
15w PC, standby power circuit
(2) In order to reduce losses and improve power efficiency, should adopt the secondary-side rectifier Schottky barrier diode (SchottkyBarrierDiode, abbreviation SBD), referred to as the Schottky diode. Such tubes have positive pressure drop (UF ≈ 0.4V), power loss, short reverse recovery time (trr can be as small as a few ns), etc., suitable for use as a low-voltage, high-current rectifier or freewheeling.
(3) Select the output power of a larger TinySwitch-II chip, helps improve the power efficiency. In the circuit shown in Figure 2, for example, select the TNY267 when the lower limit of the power efficiency is 78%; using TNY266 TNY264 sequentially reduced to 76%, 74%.
(4) In a particular application, the TinySwitch-II in the maximum output power over the thermal environment (including ambient temperature, cooling conditions, ventilation, and a power supply using the sealed or open type, and other factors), the size of the high-frequency transformer cores, work ways of design (continuous mode or discontinuous mode), the power required to change the condition of the minimum input voltage, the input stage of the filter capacitor, the forward voltage drop of the output rectifier.
(5) TinySwitch II to filter out the the audio noise produced by the high-frequency transformer. Allow using the general structure Impregnation transformer, and may also be without adhesive bonding between the core. When the switching power supply with the load mitigation audio interference, TinySwitch II by not continuously decreases the limiting current value, in order to filter the audio noise.
(6) in Figure 1 the LTV817 type linear photocoupler, available PC817 or PC817A instead. Their technical parameters are basically the same, the current transfer ratio CTR = 80% to 160%, and the reverse breakdown voltage U (BR) CEO ≥ 35V.
(7) In the circuit shown in Figure 2, standby power if select TNY266P chip, output power is reduced to the 10W. Optional EE16 type high frequency transformer core, and can also remove the filter capacitor C7.
2.2 PCB design points
TinySwitch-II chip PCB component layout, as shown in Figure 3, where the unused undervoltage protection resistor. The design of printed circuit board must note the following:
TinySwitch-II of the original layout of the printed board
(1) The following TinySwitch-II copper clad laminates not only as a source pole location, also to cool them. Figure 3 shadow area should be large enough to ensure good TinySwitch-II and rectifier cooling chip junction temperature below 100 ° C.
(2) The bypass the end capacitance CBP and the input filter capacitor C1 single point grounding method must be connected to the source terminal. Connection C1, the primary circuit of the high frequency transformer and TinySwitch-II should be as short as possible Jie.
(3) primary clamp circuit for limiting the turn-off of the peak voltage on the drain. Available R, C, VD type clamp circuit to achieve, also with 200V regulator or transient voltage suppressor (TVS) clamp the drain voltage. In any case, should the clamp components to the high frequency transformer and TinySwitch-II is the shortest distance.
(4) If the undervoltage sense resistor resistor as close as possible to the EN / UV end, in order to reduce the induced noise. Also need to consider the pressure value of the the undervoltage detection resistor R2 and R3. Select (1/4) of the resistance of W, generally can withstand the 200V voltage (refer to the continuous pressure, hereinafter the same); the resistance of W (1/2), the pressure value compared to 400V.
(5) Safety capacitors (Y capacitors) should be installed directly in the primary filter capacitor positive and secondary public land (Back end) between the maximum electromagnetic interference suppression and common mode surge voltage.
(6) the optocoupler to TinySwitch-II of the EN / UV end and the distance of the source should be kept as short as possible to reduce noise coupling. EN / UV pin to the optocoupler distance should be less than 12.7mm, the distance to the drain should be greater than 5.1mm.
(7) In order to improve the regulator performance, is connected to the secondary winding, the secondary rectifier, the secondary filter capacitor of the loop must be kept short. Secondary rectifier pad area must be large enough to ensure that the heat of the rectifier diode can be dissipated in a timely manner in the case of output short.
TinySwitch-II is easy to realize the optimization of the switching power supply design. Its switching frequency up to 132kHz, high-frequency transformer allows EE13 or EF12.6 of miniaturization cores and achieve high power efficiency. TinySwitch-II has a frequency jitter characteristics, only an inductor (You can also use two small resistors) and two capacitors in the output power less than 3W or less efficient acceptable to EMI filtering. Even in short-circuit conditions, do not need to use high-power rectifier.
Typical applications of 1 TinySwitch-II
1.1 2.5W constant current / constant voltage output of mobile phone battery charger
Mobile phone battery charger TNY264 (IC1) consisting of 2.5W (5V, 0.5A) AC wide range input circuit, as shown in Figure 1. RF fuse resistors. 85V ~ 265V AC VD1 ~ VD4 bridge rectifier, and then through the inductance L1 and C1, C2 consisting of π-type filter, the DC high voltage UI. R1 is L1 damping resistor. The use of the a TNY264 frequency jitter characteristics, and allows the use of a simple filter and low price of the security capacitor C8 (Y capacitors) can meet international standards suppression between primary and secondary conductive electromagnetic interference (EMI). Even under the most adverse circumstances the output capacitive load grounded shield to the increase in high-frequency transformer, able to effectively suppress EMI. Spike voltage protection circuit of a clamp diode VD6, capacitor C3 and resistor R2, can drain power MOSFET off limits in the safe range. IO lower than 500mA of output current, the voltage control loop work, the current control loop due to transistor VT cutoff does not work. At this point, the output voltage UO optocoupler IC2 (LTV817) LED's forward voltage drop (UF ≈ 1V) and the regulator VDZ regulator value (UZ = 3.9V) to jointly set, that of UO = UF + UZ ≈ 5V. Resistor R8 to the regulator to provide a bias current, so the VDZ stable current IZ close to a typical value. Secondary voltage via VD5 C5, L2 and C6 rectifier filter, the +5 V output voltage.
2.5w constant voltage and constant current cell phone battery charger
TinySwitch-II high switching frequency in the output rectifiers VD5 off the reverse recovery process will produce switching noise, easy to damage the rectifier. Although both ends in VD5 and on resistive and capacitive components in series of RC snubber circuit switching noise to play a certain extent, but the effect is still not ideal, Moreover, it will result in power loss in the resistance. The solution is in the secondary rectification filter series a bead.
Beads (Magneticbead) in recent years, the advent of an ultra-small amorphous alloy magnetic material, the case of two materials with ferrite. Similar to the commercially available bead appearance with plastic diode, tubular shape, but switch to magnetic materials package within small inductor and made to wear a wire. Dimensions of the common beads Φ2.5 × 3 (mm), Φ2.5 × 8 (mm), Φ3 × 5 (mm) and other specifications. Beads for chip switching power supply inductance is generally a few to tens of μH. The DC resistance of the beads is very small, and generally is 0.005Ω ~~ 0.01Ω. Usually noise filter can only absorb noise, are passive suppression; the bead role is different, can inhibit the generation of switching noise, therefore belongs to the active suppression-type, which is the fundamental difference between the two. The beads can be widely used in high-frequency switching power supply, video recorders, electronic measuring instruments, and a variety of very strict noise requirements of the circuit. The filter inductor L2 in Figure 1, on the selection of a 3.3μH the beads, can be filtered off VD5 switching noise generated in the reverse recovery process.
Transistor VT, current sense resistor R4 and optocoupler IC2 current control loop. When the output current IO is close to 500mA due to the voltage drop across R4 is elevated, so that the emitter voltage of transistor VT UBE also will increase, VT into the enlarged area, the current control loop starts to work, the output was constant current characteristics. Even if the output is short-circuit fault occurs, making IO ↑ UO → 0V, VT and optocoupler LED work properly able to maintain the total pressure drop of approximately 1.2V resistors R6 and R4. R3 is the base current limiting resistor.
1.2 15W PC, standby power circuit
An output power of 15W of the PC, the standby power supply circuit shown in Figure 2. The power supply provides two outputs: a main output of +5 V, 3A; auxiliary output compared to +12 V, 20mA. The total output power of 15.24W, power efficiency is higher than 78%. Circuit using two integrated circuits: the TNY267P type miniature monolithic switching power supply (IC1), SFH615-2 linear optocoupler (IC2). DC input voltage is 140V ~ 375V, this corresponds to the case of the AC input voltage is 230V ± 15% or 110/115V times of voltage input. The use of the TNY267P the undervoltage detection automatic restart and high-frequency switching characteristics, allows the use of smaller size, lower price EE22 high frequency transformer core. TNY267P chip is used in the form of a DIP-8 package, it can filter the output filter capacitor slowly discharges caused by auto-restart, burrs formed on the output voltage waveform. When the input voltage is below the undervoltage value, TNY267P automatically shutdown, play a protective role; work only when the input voltage is above the undervoltage threshold only. R2, R3 undervoltage threshold setting resistor. The total resistance of the two selected 4MΩ undervoltage threshold is set to DC 200V rectified DC high voltage UI must be higher than 200V in order to turn on the power. Once the power is turned on, it will continue to work until the UI down to 140V before shutdown. This lag shutdown characteristics, may be a standby power supply to provide the required holding time (Holdup).
The primary side auxiliary winding by VD2, C2 rectifier filter, +12 V output voltage, and power to TNY267P through R4. Work properly when TNY267P internal drain driver current source also stop charging on external bypass capacitor to reduce static losses in the meantime. R4 = 10kΩ, elect to bypass end to 640μA of the current, slightly higher than TNY267P current consumption, the excess part will be the chip internal zener clamp voltage of 6.3V security.
The secondary rectifier filter output of VD3, C6 and C7. L and C8 constitutes a rear stage filter mainly used to filter out the switching noise. When the output is short-circuited, automatic re-start circuitry limits the output current increases, and filtered out of VD3 overshoot voltage. By the optocoupler IC2 (SFH615-2), the regulator VDZ 5V output detection, R5 bias current to the regulator.
2 circuit design points
2.1 Use Caution
(1) The DC input voltage of the UI the minimum UImin may 90V to design. Enter a wide range of voltage (85V ~ 265V), the capacity of the input stage of the filter capacitor C1 according to the scale factor of 3μF / W to select; For example, when the output power PO = 10W, C1 = 30μF. For fixed voltage input AC 230V ± 15%, the ratio coefficient can be 1μF / W.
15w PC, standby power circuit
(2) In order to reduce losses and improve power efficiency, should adopt the secondary-side rectifier Schottky barrier diode (SchottkyBarrierDiode, abbreviation SBD), referred to as the Schottky diode. Such tubes have positive pressure drop (UF ≈ 0.4V), power loss, short reverse recovery time (trr can be as small as a few ns), etc., suitable for use as a low-voltage, high-current rectifier or freewheeling.
(3) Select the output power of a larger TinySwitch-II chip, helps improve the power efficiency. In the circuit shown in Figure 2, for example, select the TNY267 when the lower limit of the power efficiency is 78%; using TNY266 TNY264 sequentially reduced to 76%, 74%.
(4) In a particular application, the TinySwitch-II in the maximum output power over the thermal environment (including ambient temperature, cooling conditions, ventilation, and a power supply using the sealed or open type, and other factors), the size of the high-frequency transformer cores, work ways of design (continuous mode or discontinuous mode), the power required to change the condition of the minimum input voltage, the input stage of the filter capacitor, the forward voltage drop of the output rectifier.
(5) TinySwitch II to filter out the the audio noise produced by the high-frequency transformer. Allow using the general structure Impregnation transformer, and may also be without adhesive bonding between the core. When the switching power supply with the load mitigation audio interference, TinySwitch II by not continuously decreases the limiting current value, in order to filter the audio noise.
(6) in Figure 1 the LTV817 type linear photocoupler, available PC817 or PC817A instead. Their technical parameters are basically the same, the current transfer ratio CTR = 80% to 160%, and the reverse breakdown voltage U (BR) CEO ≥ 35V.
(7) In the circuit shown in Figure 2, standby power if select TNY266P chip, output power is reduced to the 10W. Optional EE16 type high frequency transformer core, and can also remove the filter capacitor C7.
2.2 PCB design points
TinySwitch-II chip PCB component layout, as shown in Figure 3, where the unused undervoltage protection resistor. The design of printed circuit board must note the following:
TinySwitch-II of the original layout of the printed board
(1) The following TinySwitch-II copper clad laminates not only as a source pole location, also to cool them. Figure 3 shadow area should be large enough to ensure good TinySwitch-II and rectifier cooling chip junction temperature below 100 ° C.
(2) The bypass the end capacitance CBP and the input filter capacitor C1 single point grounding method must be connected to the source terminal. Connection C1, the primary circuit of the high frequency transformer and TinySwitch-II should be as short as possible Jie.
(3) primary clamp circuit for limiting the turn-off of the peak voltage on the drain. Available R, C, VD type clamp circuit to achieve, also with 200V regulator or transient voltage suppressor (TVS) clamp the drain voltage. In any case, should the clamp components to the high frequency transformer and TinySwitch-II is the shortest distance.
(4) If the undervoltage sense resistor resistor as close as possible to the EN / UV end, in order to reduce the induced noise. Also need to consider the pressure value of the the undervoltage detection resistor R2 and R3. Select (1/4) of the resistance of W, generally can withstand the 200V voltage (refer to the continuous pressure, hereinafter the same); the resistance of W (1/2), the pressure value compared to 400V.
(5) Safety capacitors (Y capacitors) should be installed directly in the primary filter capacitor positive and secondary public land (Back end) between the maximum electromagnetic interference suppression and common mode surge voltage.
(6) the optocoupler to TinySwitch-II of the EN / UV end and the distance of the source should be kept as short as possible to reduce noise coupling. EN / UV pin to the optocoupler distance should be less than 12.7mm, the distance to the drain should be greater than 5.1mm.
(7) In order to improve the regulator performance, is connected to the secondary winding, the secondary rectifier, the secondary filter capacitor of the loop must be kept short. Secondary rectifier pad area must be large enough to ensure that the heat of the rectifier diode can be dissipated in a timely manner in the case of output short.
Monday, September 24, 2012
iPhone 5 Arrival Triggers New Sales Frenzy
It took little more than five hours for the first Apple iPhone 5 to go on sale in the Chinese mainland after being smuggled across the border from Hong Kong, but supplies were short and prices high.
In a crowded building in the southern city of Shenzhen, which lies across Hong Kong's northern border, a salesman stood by as shoppers speaking various dialects scrambled to take photos of three shiny new iPhones on display in his glass cabinet.
"The stock is so limited that people are treating them like gems," said another salesman, surnamed Lin.
New Apple products are typically rolled out in the Chinese mainland after they are in Hong Kong, creating a thriving "gray market" for enterprising traders. According to local media reports, iPhone 5 is expected go on sale in the Chinese mainland by year end.
Vendors like Lin make a year-round living exploiting the lower prices of Apple products and other popular brands consumer electronics in Hong Kong, a free port whose downtown is just an hour from Shenzhen with no duty on many electronics imports.
At the iPhone 5's debut in Hong Kong earlier in the day, small groups of people carrying rucksacks filled with cash waited outside the city's flagship store hoping to snap up phones for resale.
For those able to secure one, the new phone cost HK$5,588 ($720), or about 4,546 yuan, at the Hong Kong Apple store, while they were selling for between 7,500 yuan and 9,000 yuan in Shenzhen where fake and smuggled phones are often hawked.
But in Shenzhen, business was slow.
On Friday afternoon, most vendors in the Shenzhen building still had their stalls filled with the iPhone 4S, promising that the latest model would arrive in the evening, when potential buyers were hoping to get a better deal.
In Hong Kong, the iPhone 5's Friday debut stoked up the Apple craze again, with thousands of fans jamming stores, scalpers scouting for buyers, and telecommunications operators jumping on the bandwagon by soft-launching new services.
The new smartphone is also launched in the United States, the United Kingdom, Canada, France, Germany, Australia and Singapore.
In Sydney, Singapore and Tokyo, iPhone 5 fans waited hours outside Apple stores or authorized dealers to get the latest model.
In Hong Kong, buyers had to sign up online with Apple to pick up the new model in the local flagship store at a prearranged time. The first customers in Hong Kong were greeted by staff cheering, clapping, and chanting "IPhone 5! IPhone 5!" and high-fiving them as they were escorted, one by one, through the front door.
Source from: sina.com
In a crowded building in the southern city of Shenzhen, which lies across Hong Kong's northern border, a salesman stood by as shoppers speaking various dialects scrambled to take photos of three shiny new iPhones on display in his glass cabinet.
New Apple products are typically rolled out in the Chinese mainland after they are in Hong Kong, creating a thriving "gray market" for enterprising traders. According to local media reports, iPhone 5 is expected go on sale in the Chinese mainland by year end.
Vendors like Lin make a year-round living exploiting the lower prices of Apple products and other popular brands consumer electronics in Hong Kong, a free port whose downtown is just an hour from Shenzhen with no duty on many electronics imports.
At the iPhone 5's debut in Hong Kong earlier in the day, small groups of people carrying rucksacks filled with cash waited outside the city's flagship store hoping to snap up phones for resale.
For those able to secure one, the new phone cost HK$5,588 ($720), or about 4,546 yuan, at the Hong Kong Apple store, while they were selling for between 7,500 yuan and 9,000 yuan in Shenzhen where fake and smuggled phones are often hawked.
But in Shenzhen, business was slow.
On Friday afternoon, most vendors in the Shenzhen building still had their stalls filled with the iPhone 4S, promising that the latest model would arrive in the evening, when potential buyers were hoping to get a better deal.
In Hong Kong, the iPhone 5's Friday debut stoked up the Apple craze again, with thousands of fans jamming stores, scalpers scouting for buyers, and telecommunications operators jumping on the bandwagon by soft-launching new services.
The new smartphone is also launched in the United States, the United Kingdom, Canada, France, Germany, Australia and Singapore.
In Sydney, Singapore and Tokyo, iPhone 5 fans waited hours outside Apple stores or authorized dealers to get the latest model.
In Hong Kong, buyers had to sign up online with Apple to pick up the new model in the local flagship store at a prearranged time. The first customers in Hong Kong were greeted by staff cheering, clapping, and chanting "IPhone 5! IPhone 5!" and high-fiving them as they were escorted, one by one, through the front door.
Source from: sina.com
Thursday, August 23, 2012
Multifunction Phone Case Stand for iPhone 4 4S
This is a design by Loyto Esineiden, iPhone housing, which has a multifunctional component, can be used not only accommodated the headset can also flip phone horizontally heel stent. With it, even in the absence of the winder can also headphone cable easily handle.
Tuesday, July 31, 2012
7 Main reasons why purchase Cheap Unlocked Cell Phone
Unlocked cell phones grew to be very popular these days, and so rrndividuals are determined to acquire more information along with understand better what exactly positive aspects they can acquire by buying unlocked cell phone as well as what makes it distinct from the standard cell phone made available from the cellular service have a tendency to comes with the 2 year deal bundle. Below we discussed the leading main reasons why individuals need to move their care about unlocked phones:
1. Get virtually any Sim. People unlocked cell phone are able to get any SIM card that is certainly put into this. It will not make the phone for you to Freeze or perhaps present any trouble by any means towards cellular phone.
2. Presently Jailbroke. Your own cell phone is definitely unlocked and that means you don't have to be worried about employing several low light operator along with have a potential for your current cellular phone getting ruined in the process regarding unleashing.
3. Work overseas! The phone is appropriate good offshore. It is useful if you are a foreign passenger!
4. Plan Free - You don't have to crime plan virtually any mobile enterprise and obtain jammed while in the 2 year deal to recieve ones phone.
5. Features - All your favorite cellular phone options are integrated.
6. A number of Models- When evaluating a cell phone you'll be pleased to come across a thing that might be suitable for you and may conform to your requirements.
7. Multiple Users - Since your phone is just not linked to a particular service provider and will consider virtually any Sim, you could start to to share with you the product with the family or friends? This might be feasible again in case going or perhaps wanting to spending budget at home.
Check out www.gizga.com to read more and the terrific merchandise choice
1. Get virtually any Sim. People unlocked cell phone are able to get any SIM card that is certainly put into this. It will not make the phone for you to Freeze or perhaps present any trouble by any means towards cellular phone.
2. Presently Jailbroke. Your own cell phone is definitely unlocked and that means you don't have to be worried about employing several low light operator along with have a potential for your current cellular phone getting ruined in the process regarding unleashing.
3. Work overseas! The phone is appropriate good offshore. It is useful if you are a foreign passenger!
4. Plan Free - You don't have to crime plan virtually any mobile enterprise and obtain jammed while in the 2 year deal to recieve ones phone.
5. Features - All your favorite cellular phone options are integrated.
6. A number of Models- When evaluating a cell phone you'll be pleased to come across a thing that might be suitable for you and may conform to your requirements.
7. Multiple Users - Since your phone is just not linked to a particular service provider and will consider virtually any Sim, you could start to to share with you the product with the family or friends? This might be feasible again in case going or perhaps wanting to spending budget at home.
Check out www.gizga.com to read more and the terrific merchandise choice
Sunday, July 22, 2012
Car Electronics
Car electronics, in the event that selected very carefully, health supplement your own Car Interior Accessories which makes it make heads turn anywhere you go. Car electronics are great (as well as inexpensive) opportunities which enhance each design as well as comfort.
Kinds of Car Electronics
There are numerous kinds of car electronics available for sale most of which tend to be talked about beneath;
Hands-free Packages -- Because speaking in your cell phone whilst traveling is really a lawful criminal offense in many nations, probably the most simple and easy handy car electronics is really a hands-free. Hands-free packages utilize Wireless bluetooth technologies and fasten your own cell phone for your vehicle's audio system letting you pay attention to the actual mystery caller upon loudspeakers. It'll instantly plan your own vehicle's stereo system in order to silence this as well as take part in the phone calls with the entrance loudspeakers. Hands-free packages include the noise-canceling mic that permits you to talk inside a regular words rather than yelling to share your own information obviously. The majority of hands-free vehicle packages permit you to link your own music player straight together with your vehicle's stereo system letting you appreciate your own songs selection with no additional opportunities. If you're a Macintosh enthusiast, it's also wise to set up an apple iphone vehicle holder with regard to keeping this securely when you are traveling.
Vehicle Energy Inverters -- If you're technologies experienced and also have a large amount of gadgets, an automobile energy inverter is what a doctor purchased, because it enables you to refresh just about all your own digital equipment such as although not restricted to cell phones, Gps navigation products, apple iphones, as well as apple ipods and so on. Vehicle energy invertors can be found in various forces (for example 200W, 400W or even 1000W) in most cases possess built-in safety towards everywhere enter current sensors, overburden safety, brief signal safety, automated turn off as well as an inner air conditioning enthusiast.
Back-up Digital cameras -- An additional car electronic accessories you might like to think about is really a back-up digital camera set up in a person vehicle's video clip participant with regard to enhancing presence whenever copying. The back-up digital camera provides you with cheapest through safeguarding your own towards protrusions, nicks as well as scratches as well as scrapes. There's a many back-up digital cameras available for sale spot to select from.
Distant Beginners -- Distant beginners possess a essential make use of that many individuals are unaware of; they permit you to definitely turn on the actual motor as well as ac (Air conditioning) without starting the vehicle doorway. This can help you save in the terrible warmth influx as well as moisture you need to withstand (prior to the ac takes over as well as helps make the heat manageable) whenever your vehicle continues to be left under the sun for some hrs or even occasionally much less. Furthermore, distant beginners additionally assist unfreeze your own motor assisting you begin the vehicle within winter seasons.
Kinds of Car Electronics
There are numerous kinds of car electronics available for sale most of which tend to be talked about beneath;
Hands-free Packages -- Because speaking in your cell phone whilst traveling is really a lawful criminal offense in many nations, probably the most simple and easy handy car electronics is really a hands-free. Hands-free packages utilize Wireless bluetooth technologies and fasten your own cell phone for your vehicle's audio system letting you pay attention to the actual mystery caller upon loudspeakers. It'll instantly plan your own vehicle's stereo system in order to silence this as well as take part in the phone calls with the entrance loudspeakers. Hands-free packages include the noise-canceling mic that permits you to talk inside a regular words rather than yelling to share your own information obviously. The majority of hands-free vehicle packages permit you to link your own music player straight together with your vehicle's stereo system letting you appreciate your own songs selection with no additional opportunities. If you're a Macintosh enthusiast, it's also wise to set up an apple iphone vehicle holder with regard to keeping this securely when you are traveling.
Vehicle Energy Inverters -- If you're technologies experienced and also have a large amount of gadgets, an automobile energy inverter is what a doctor purchased, because it enables you to refresh just about all your own digital equipment such as although not restricted to cell phones, Gps navigation products, apple iphones, as well as apple ipods and so on. Vehicle energy invertors can be found in various forces (for example 200W, 400W or even 1000W) in most cases possess built-in safety towards everywhere enter current sensors, overburden safety, brief signal safety, automated turn off as well as an inner air conditioning enthusiast.
Back-up Digital cameras -- An additional car electronic accessories you might like to think about is really a back-up digital camera set up in a person vehicle's video clip participant with regard to enhancing presence whenever copying. The back-up digital camera provides you with cheapest through safeguarding your own towards protrusions, nicks as well as scratches as well as scrapes. There's a many back-up digital cameras available for sale spot to select from.
Distant Beginners -- Distant beginners possess a essential make use of that many individuals are unaware of; they permit you to definitely turn on the actual motor as well as ac (Air conditioning) without starting the vehicle doorway. This can help you save in the terrible warmth influx as well as moisture you need to withstand (prior to the ac takes over as well as helps make the heat manageable) whenever your vehicle continues to be left under the sun for some hrs or even occasionally much less. Furthermore, distant beginners additionally assist unfreeze your own motor assisting you begin the vehicle within winter seasons.
Thursday, July 5, 2012
Cell Phone Covers
There are as many cell phone covers as there are types of people. There is a smartphone cover or case for every type of person. Individualizing your gear has never been this fun. When we wear any clothing or accessories, it seems that phones have the most degree of freedom. Your phone is an extension of your personality. Your phone shows your innermost self. What does yours look like? Get some ideas from the smartphone cases below to individualize your true match.
There are smartphone covers for the patriot. One particular design features a phone case that comes in different country flags. Each phone features different flag colors in stripes of three lengthwise. The U.S. flag design features the first stripe of blue with white stars. The middle stripe is pure white. The third stripe is red. Other country designs include: England, France, Italy, Germany, Mexico, and Argentina.
There are cell phone cases for the anime lover. For example, there is a super cute phone cleverly decorated with an extremely happy panda smiling ear to ear with katakana letters spelling "shiawase" ("happy") inside his mouth. He sits on the back of the phone next to the lens of the phone's camera. This panda is in no doubt referring to how you should look when someone takes your picture. There is also a cute little hard boiled "egg man". This phone is "kawai" ("cute").
There are cell phone covers for the mod. An example includes a smartphone case that is lined with leather and a fiber woven center. The colors for this cell phone case are black and red or black and white. It's simplistic yet makes a statement.
There are cell phone covers and cases for the sophisticated. For example, a particular smartphone case is actually made of real wood. It has a sleek and smooth feel to it. Its rich colors are maple and walnut. This cell phone case is a must have. You're sure to have your friends asking you where you bought it.
There arecell phone accessories for the soccer enthusiast. Each android phone cover features a different country and a unique design specific to that country. For instance, Mexico's "Gooooaaaaaaaaaal," that they're so famous for engulfs the entire backing of the phone. The letters are colored in the design of the Mexican flag. At the center of the "Gooooaaaaaaaaaal," stands the eagle of the Mexican flag. Argentina's design of dark and light blue stripes with blazoned soccer ball symbolizing the sun is stunning.
There are cell phone covers for the person who is super cool. These cell phone cases come in a wide variety of metallic colors and not your average colors either. These cases come in green, orange, white, silver, and pink; but they're hues are deeper and more vibrant. For instance, the "green" is more like a green apple jelly bean. The "white" smooth case reminds you of the regalia the Storm Troopers wear in Star Wars.
Whatever your personality, express it in the cell phone cover you choose. There's a never ending supply. Get one or get several. Have fun choosing yours.
There are smartphone covers for the patriot. One particular design features a phone case that comes in different country flags. Each phone features different flag colors in stripes of three lengthwise. The U.S. flag design features the first stripe of blue with white stars. The middle stripe is pure white. The third stripe is red. Other country designs include: England, France, Italy, Germany, Mexico, and Argentina.
There are cell phone cases for the anime lover. For example, there is a super cute phone cleverly decorated with an extremely happy panda smiling ear to ear with katakana letters spelling "shiawase" ("happy") inside his mouth. He sits on the back of the phone next to the lens of the phone's camera. This panda is in no doubt referring to how you should look when someone takes your picture. There is also a cute little hard boiled "egg man". This phone is "kawai" ("cute").
There are cell phone covers for the mod. An example includes a smartphone case that is lined with leather and a fiber woven center. The colors for this cell phone case are black and red or black and white. It's simplistic yet makes a statement.
There are cell phone covers and cases for the sophisticated. For example, a particular smartphone case is actually made of real wood. It has a sleek and smooth feel to it. Its rich colors are maple and walnut. This cell phone case is a must have. You're sure to have your friends asking you where you bought it.
There are
There are cell phone covers for the person who is super cool. These cell phone cases come in a wide variety of metallic colors and not your average colors either. These cases come in green, orange, white, silver, and pink; but they're hues are deeper and more vibrant. For instance, the "green" is more like a green apple jelly bean. The "white" smooth case reminds you of the regalia the Storm Troopers wear in Star Wars.
Whatever your personality, express it in the cell phone cover you choose. There's a never ending supply. Get one or get several. Have fun choosing yours.
Subscribe to:
Posts (Atom)