CN202513641U - Charger with zero standby power consumption - Google Patents
Charger with zero standby power consumption Download PDFInfo
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- CN202513641U CN202513641U CN2012200067154U CN201220006715U CN202513641U CN 202513641 U CN202513641 U CN 202513641U CN 2012200067154 U CN2012200067154 U CN 2012200067154U CN 201220006715 U CN201220006715 U CN 201220006715U CN 202513641 U CN202513641 U CN 202513641U
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Abstract
Disclosed in the utility model is a charger with zero standby power consumption. The charger comprises: an alternating current power supply; a rectification and filtering unit, which is connected with the alternating current power supply; a power conversion control unit, which is connected with the rectification and filtering unit; an output rectification and filtering unit, which is connected with the power conversion control unit; a signal amplification unit, which is connected with a current sampling unit by a resistor; and a central control unit, which is connected with the signal amplification unit. According to the utility model, with utilization of the charger, the zero standby power consumption of the charger can be realized; electric energy can be effectively saved; the service life of the charger can be prolonged; and the usage security of the charger can be enhanced. Meanwhile, multi-time frequent charging of the battery of the charging equipment can be avoided, thereby prolonging the service life of the battery.
Description
Technical field
The utility model relates to a kind of USB interface charger, particularly a kind of charger of zero stand-by power consumption.
Background technology
The portable product of extensive use at present is for example: mobile phone, notebook computer, portable power tool etc. all dispose charger; Much human is not once being full of electricity charger to be taken off from supply socket when charging; Wait when remembering often and just take off, will cause following problem like this:
1, the waste electric energy is unfavorable for energy-saving and emission-reduction.
2, power supply does not cut off, and then charger inside is charged for a long time, makes electronic equipment be in fatigue for a long time, shortens its useful life, even reduces the class of insulation.
3, cause repeatedly frequent charge of product quilt, shorten the useful life of product battery.
The utility model content
The technical problem that the utility model will solve is to provide a kind of zero stand-by power consumption charger; Be implemented in the charge condition of monitoring the equipment that is recharged in the charging process in real time; Automatically cut off the charger AC power after making charging device be full of electric energy; Effective saves energy, prolong the useful life of charger and avoid being recharged device battery by frequent charge repeatedly, prolonged useful life of battery.
For addressing the above problem, the utility model provides a kind of charger of zero stand-by power consumption, comprising:
AC power;
Rectification filtering unit 1 is connected with said AC power, comprising: two resistance R 1A, R1B, two differences
Mould inductance L 1, L2, capacitor C 1; Rectifier bridge BG1 and pi type filter; Said pi type filter is made up of capacitor C 4, C5 and the common mode inductance L3 of two parallel connections; Said capacitor C 1 and said resistance R 1A, R1B are parallelly connected, and an end of capacitor C 1 connects rectifier bridge BG1, and pi type filter is connected on the rectifier bridge BG1;
Power Conversion control unit 2 is connected with said rectification filtering unit 1, comprising: resistance R 4, R5, R6, R7, R8A, R8B, R9, R10, R11A, R11B, capacitor C 6, C7, C8; Diode D1, D2, D3 and power supply chip IC1; 1 end of said IC1 is connected with resistance R 4, R5, the R6 of three series connection, and diode D2 one end is connected between resistance R 5 and the resistance R 6, ground connection after the other end is connected with resistance R 9, R10; Resistance R 6 one ends are connected back ground connection with capacitor C 6; 2 ends of said IC1 are connected back ground connection with capacitor C 7,3 ends of said IC1 are connected between resistance R 9, the R10, and through diode D2 ground connection; Two parallel resistor R11A, R11B are connected back ground connection with 4 ends of said IC1; 7 ends of said IC1 and 8 end ground connection are connected to the end of diode D1 after 5 ends of said IC1 and the 6 end parallel connections, two parallel resistance R8A, R8B and resistance R 7, capacitor C 8 are parallelly connected;
Output rectification filtering unit 3 is connected through switch transformer T1 with said Power Conversion control unit 2; Said output rectification filtering unit 3 comprises: resistance R 12, R13, R14, R15, R16, R17; Capacitor C 9, C10, C11, C12, diode D4 and USB interface, three capacitor C 10, C11, C12 are parallelly connected with resistance R 13; Resistance R 12 is connected in parallel with diode D4 with capacitor C 9 series connection backs; Said diode D4 is connected to capacitor C 10, and said USB interface is parallelly connected with four resistance (R14, R15, R16, R17), and two resistance (R14, R16) series connection back is parallelly connected with two resistance (R15, R17);
Current sampling unit 4 is connected with said output rectification filtering unit 3, comprises four parallel resistor R18, R19, R20, R21;
Signal amplification unit 5 is connected through resistance R 22 with said current sampling unit 4; Comprise two-stage calculation amplifier IC2A, IC2B; Resistance R 23, R24, R25, R26 and capacitor C 13, C14, C15, C18; Resistance R 23, R25 and capacitor C 13, C18 be ground connection respectively; Resistance R 24 links to each other with 2 ends of said operational amplifier IC2A with capacitor C 14 parallel connection backs, and resistance R 26 links to each other with 6 ends of said operational amplifier IC2B with capacitor C 15 parallel connection backs, and 1 end of operational amplifier IC2A links to each other with 5 ends of operational amplifier IC2B;
Central control unit 6 links to each other with said signal amplification unit 5, comprises high speed microprocessor IC3, capacitor C 17, resistance R 28 and LED, said resistance R 28 be connected to high speed microprocessor IC3, capacitor C 17 ground connection after LED connects;
Said central control unit 6 is connected through switch control unit 7 with rectification filtering unit 1; Said switch control unit 7 comprises optical coupler IC4, controllable silicon Q1, touches button SW, resistance R 2, R3, R29 and capacitor C 2, C3; 1 pin of said optical coupler IC4 links to each other with resistance R 29, and 2 pin link to each other with central control unit 6; Said 1 pin that touches button SW links to each other with 4 pin and the resistance R 3 of optical coupler IC4, touches 2 pin of button SW and links to each other with 6 pin of optical coupler IC4, the G utmost point and the capacitor C 3 of controllable silicon Q1; The T2 utmost point of said controllable silicon Q1 links to each other with resistance R 2, resistance R 3 and differential mode inductance L1, and the T1 utmost point links to each other with 2 pin of capacitor C 2,1 pin and the rectifier bridge BG13 pin of capacitor C 3, resistance R 2 and capacitor C 2 series connection.
In technique scheme; The work of charger is touched the button realization through pressing; Central control unit is implemented in the charge condition of monitoring the equipment that is recharged in the charging process in real time; Charging device is full of cuts off the charger AC power behind the electric energy automatically, make charger zero stand-by power consumption, effectively saves energy, prolong the useful life of charger and improved the fail safe that charger uses, avoid simultaneously being recharged device battery by frequent charge repeatedly, prolonged useful life of battery.
Further improvement to technique scheme; The utility model central control unit 6 also comprises floating charge school checkpoint K switch 1, cuts out checkpoint K switch 2, resistance 27 and capacitor C 16, and resistance 27 is connected to the RESET end of closing checkpoint K switch 2 and high speed microprocessor IC3.Adopt this technical scheme can conveniently realize the setting and the verification of floating current and close current.
To the further improvement of technique scheme, the resistance R 18 of the utility model current sampling unit 4, R19, R20, R21 are the resistance of high accuracy, low resistance.Guarantee that when being recharged equipment charge the electric current that flows through on charging current and the current sampling unit is the same, produce a weak voltage signal that is directly proportional with electric current on the current sampling unit and be transferred to signal amplification unit 5.
To the further improvement of technique scheme, the utility model operational amplifier IC2A, IC2B are high-gain, the operational amplifier of low noise.Adopt this operational amplifier can be so that the weak voltage signal is amplified to the magnitude of voltage that central control unit can be discerned through signal amplification circuit.
To the further improvement of technique scheme, the utility model high speed microprocessor IC3 is highly integrated, as to have mould/number conversion microprocessor.Adopt this microprocessor to guarantee to convert the voltage analog signal after the signal amplification unit amplification into digital signal; And carry out real-time analytical calculation, send the verification that is provided with that corresponding control command is given switch control unit 7 and floating current and close current according to analysis result.
To the further improvement of technique scheme, the utility model central control unit monitoring charging current and charging interval.Adopt this technical scheme can guarantee that charger can adapt to most in the market charge prepd.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of the charger of zero stand-by power consumption.
Wherein, resistance: R1A, R1B, R2, R3, R4, R5, R6, R7, R8A, R8B, R9, R10, R11A, R11B, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28;
Electric capacity (nonpolarity): C1, C2, C3, C7, C8, C9, C12, C13, C14, C15, C16, C17;
Electric capacity (polarity is arranged): C4, C5, C6, C10, C11;
Diode: D1, D2, D3, D4;
Differential mode inductance: L1, L2;
Common mode inductance: L3;
Switch transformer: T1;
Rectifier bridge: BG1
Power supply chip: IC1;
Operational amplifier: IC2A, IC2B;
High speed microprocessor: IC3;
Optical coupler: IC4;
Controllable silicon: Q1;
Touch button: SW;
Switch: K1, K2;
Light-emitting diode: LED.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to the utility model.
Can know that by accompanying drawing 1 the utility model comprises:
AC power;
Rectification filtering unit 1 is connected with said AC power, comprising: two resistance R 1A, R1B, two differential mode inductance L1, L2; Capacitor C 1; Rectifier bridge BG1 and pi type filter, said pi type filter is made up of capacitor C 4, C5 and the induction coil L3 of two parallel connections, and said capacitor C 1 and said resistance R 1A, R1B are parallelly connected; One end of capacitor C 1 connects rectifier bridge BG1, and pi type filter is connected on the rectifier bridge BG1;
Power Conversion control unit 2 is connected with said rectification filtering unit 1, comprising: resistance R 4, R5, R6, R7, R8A, R8B, R9, R10, R11A, R11B, capacitor C 6, C7, C8; Diode D1, D2, D3 and power supply chip IC1; 1 end of said IC1 is connected with resistance R 4, R5, the R6 of three series connection, and diode D2 one end is connected between resistance R 5 and the resistance R 6, ground connection after the other end is connected with resistance R 9, R10; Resistance R 6 one ends are connected back ground connection with capacitor C 6; 2 ends of said IC1 are connected back ground connection with capacitor C 7,3 ends of said IC1 are connected between resistance R 9, the R10, and through diode D2 ground connection; Two parallel resistor R11A, R11B are connected back ground connection with 4 ends of said IC1; 7 ends of said IC1 and 8 end ground connection are connected to the end of diode D1 after 5 ends of said IC1 and the 6 end parallel connections, two parallel resistance R8A, R8B and resistance R 7, capacitor C 8 are parallelly connected;
Output rectification filtering unit 3 is connected through switch transformer T1 with said Power Conversion control unit 2; Said output rectification filtering unit 3 comprises: resistance R 12, R13, R14, R15, R16, R17; Capacitor C 9, C10, C11, C12, diode D4 and USB interface, three capacitor C 10, C11, C12 are parallelly connected with resistance R 13; Resistance R 12 is connected in parallel with diode D4 with capacitor C 9 series connection backs; Said diode D4 is connected to capacitor C 10, and said USB interface is parallelly connected with four resistance (R14, R15, R16, R17), and two resistance (R14, R16) series connection back is parallelly connected with two resistance (R15, R17);
Current sampling unit 4 is connected with said output rectification filtering unit 3, comprises four parallel resistor R18, R19, R20, R21;
Signal amplification unit 5 is connected through resistance R 22 with said current sampling unit 4; Comprise two-stage calculation amplifier IC2A, IC2B; Resistance R 23, R24, R25, R26 and capacitor C 13, C14, C15, C18; Resistance R 23, R25 and capacitor C 13, C18 be ground connection respectively; Resistance R 24 links to each other with 2 ends of said operational amplifier IC2A with capacitor C 14 parallel connection backs, and resistance R 26 links to each other with 6 ends of said operational amplifier IC2B with capacitor C 15 parallel connection backs, and 1 end of operational amplifier IC2A links to each other with 5 ends of operational amplifier IC2B;
Central control unit 6 links to each other with said signal amplification unit 5, comprises high speed microprocessor IC3, capacitor C 17, resistance R 28 and LED, said resistance R 28 be connected to high speed microprocessor IC3, capacitor C 17 ground connection after LED connects;
Said central control unit 6 is connected through switch control unit 7 with rectification filtering unit 1; Said switch control unit 7 comprises optical coupler IC4, controllable silicon Q1, touches button SW, resistance R 2, R3, R29 and capacitor C 2, C3; 1 pin of said optical coupler IC4 links to each other with resistance R 29, and 2 pin link to each other with central control unit 6; Said 1 pin that touches button SW links to each other with 4 pin and the resistance R 3 of optical coupler IC4, touches 2 pin of button SW and links to each other with 6 pin of optical coupler IC4, the G utmost point and the capacitor C 3 of controllable silicon Q1; The T2 utmost point of said controllable silicon Q1 links to each other with resistance R 2, resistance R 3 and differential mode inductance L1, and the T1 utmost point links to each other with 2 pin of capacitor C 2,1 pin and the rectifier bridge BG13 pin of capacitor C 3, resistance R 2 and capacitor C 2 series connection.Central control unit 6 also comprises floating charge school checkpoint K switch 1, cuts out checkpoint K switch 2, resistance 27 and capacitor C 16, and resistance 27 is connected to the RESET end of closing checkpoint K switch 2 and high speed microprocessor IC3.
Present embodiment is with close current 40mA, and floating current 100mA is an example, realizes the setting and the verification of floating current and close current, and is specific as follows:
1, close current setting: on USB socket, connect a tunable load, the adjustment load current makes it to be 40mA, and K2 is closed checkpoint short circuit 2S, and the LED flicker is provided with completion.
2, floating current setting: on USB socket, connect a tunable load, the adjustment load current makes it to be 100mA, and with K1 floating charge checkpoint short circuit 2S, the LED flicker is provided with completion.
Present embodiment is with close current 40mA, and floating current 100mA is the charging control mode that combines in example explanation monitoring charging current and charging interval, and is specific as follows:
1, at preceding 10 minutes of the charging stage, central control unit 6 was if monitor charging current＜40mA, and with regard to the instruction of sending powered-down, switch control unit 7 cuts off AC powers, and charger quits work at once; If monitor charging current >=40mA, the instruction of then sending power-on, switch control unit 7 continues to keep the AC power conducting, and charger works on.
2, after charging 10 minutes, if CPU 6 monitors charging current＞100mA, then send the instruction of power-on, switch control unit 7 cuts off AC power, and charger quits work; If CPU continuous monitoring in 30S is arrived charging current between 40-100mA; Then CPU changes the countdown of closing that the floating charge stage began 10 minutes over to; After countdown in 10 minutes finishes; Central control unit 6 sends the powered-down instruction, and switch control unit 7 cuts off AC power, and charger quits work.
3, no matter after still charging 10 minutes in preceding 10 minutes that charge and in charging, close the countdown stage; As long as charging current＜40mA (close current of setting just); Just send the powered-down instruction immediately, switch control unit 7 cuts off AC power, and charger quits work.
When implementing this device; Rectification filtering unit 1 is level and smooth, pure direct current with electrical network 50/60Hz AC rectification; Simultaneously electromagnetic noise and noise signal are suppressed; Minimizing also has overcurrent protection and current-limiting function in addition to the interference of Power Conversion control unit 2 and electrical network, guarantees the safety that product uses.Power Conversion control unit 2 becomes high-frequency alternating current with the direct current after the rectification, and through switch transformer T1 with voltage drop to design load be transported to output rectification filtering unit 3.Output rectification filtering unit 3 is level and smooth, pure direct current with the high-frequency ac electric rectification.Current sampling unit 4 links to each other 5 with output rectification filtering unit 3 with signal amplification unit, monitors charging current and converts current signal into corresponding with it voltage signal.The weak voltage signal that signal amplification unit 5 is sent current sampling unit 4 here is amplified to the magnitude of voltage that central control unit 6 can read.Voltage analog signal after central control unit 6 amplifies signal amplification unit 5 converts digital signal into; And carry out real-time analytical calculation, send the verification that is provided with that corresponding control command is given switch control unit 7 and floating current and close current according to analysis result.Thereby the control command that switch control unit 7 sends according to central control unit 6 is opened or is closed the work of controllable silicon Q1 control charger or closes and through manually making controllable silicon Q1 conducting make charger work by touching button SW.USB interface connects equipment to be charged, and long by touching button SW 1S, AC power is through touching the G utmost point that button SW is added to controllable silicon Q1; Controllable silicon Q1 conducting, product must be established beginning work by cable, and central control unit 6 sends the power-on instruction; LED lights, and the command signal of power-on is added to the G utmost point of controllable silicon Q1 through optical coupler IC4, makes can keep conducting by controllable silicon Q1 (this whole process required time is extremely short; Staff unclamp touch button SW before, this process is accomplished, controllable silicon Q1 is kept conducting by the power-on commands for controlling that central control unit 6 sends; Controllable silicon Q1 makes product be maintained work; Central control unit 6 is able to continue to send the instruction of power-on, and then controllable silicon Q1 is able to continue to keep conducting, controllable silicon Q1 and central control unit 6 realization interlocking conductings).At preceding 10 minutes of the charging stage, central control unit 6 was if monitor charging current＜40mA, and with regard to the instruction of sending powered-down, switch control unit 7 cuts off AC powers, and charger quits work, and LED extinguishes at once; If monitor charging current >=40mA, the instruction of then sending power-on, switch control unit 7 continues to keep the AC power conducting, and charger works on, and LED continues to light.After charging 10 minutes, if CPU 6 monitors charging current＞100mA, then send the instruction of power-on, switch control unit 7 cuts off AC power, and charger quits work, and LED extinguishes; If CPU 6 continuous monitoring in 30S is arrived charging current between 40-100mA; Then CPU 6 changes the countdown of closing that the floating charge stage began 10 minutes over to; After countdown in 10 minutes finished, central control unit 6 sent the powered-down instruction, and switch control unit 7 cuts off AC power; Charger quits work, and LED extinguishes.No matter after still charging 10 minutes in preceding 10 minutes that charge and in charging, close the countdown stage; As long as charging current＜40mA (close current of setting just); Central control unit 6 just sends the powered-down instruction immediately; Switch control unit 7 cuts off AC power, and charger quits work, and LED extinguishes.
More than be the explanation of the preferred embodiments of the utility model, all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (7)
1. the charger of one kind zero stand-by power consumption is characterized in that comprising: AC power;
The rectification filtering unit (1) that is connected with said AC power; Comprise two resistance (R1A, R1B), two differential mode inductances (L1, L2), electric capacity (C1), rectifier bridge (BG1) and pi type filter; Said pi type filter is made up of the electric capacity (C4, C5) and the common mode inductance (L3) of two parallel connections; Said electric capacity (C1) is parallelly connected with said resistance (R1A, R1B), and an end of electric capacity (C1) connects rectifier bridge (BG1), and pi type filter is connected on the rectifier bridge (BG1);
The Power Conversion control unit (2) that is connected with said rectification filtering unit (1); Comprise resistance (R4, R5, R6, R7, R8A, R8B, R9, R10, R11A, R11B), electric capacity (C6, C7, C8), diode (D1, D2, D3) and power supply chip IC1; 1 end of said IC1 is connected with the resistance of three series connection (R4, R5, R6), and diode (D2) end is connected between resistance (R5) and the resistance (R6), ground connection after the other end is connected with resistance (R9, R10); Resistance (R6) end is connected back ground connection with electric capacity (C6); 2 ends of said IC1 are connected back ground connection with electric capacity (C7), 3 ends of said IC1 are connected between the resistance (R9, R10), and through diode (D2) ground connection; Two parallel resistor (R11A, R11B) are connected back ground connection with 4 ends of said IC1; 7 ends of said IC1 and 8 end ground connection are connected to an end of diode (D1) after 5 ends of said IC1 and the 6 end parallel connections, (C8) is parallelly connected with resistance (R7), electric capacity for two parallel resistances (R8A, R8B);
The output rectification filtering unit (3) that is connected with said Power Conversion control unit (2) through switch transformer (T1); Said output rectification filtering unit (3) comprises resistance (R12, R13, R14, R15, R16, R17), electric capacity (C9, C10, C11, C12), diode (D4) and USB interface; Three electric capacity (C10, C11, C12) are parallelly connected with resistance (R13); Resistance (R12) and electric capacity (C9) series connection back are connected in parallel with diode (D4); Said diode (D4) is connected to electric capacity (C10), and said USB interface is parallelly connected with four resistance (R14, R15, R16, R17), and two resistance (R14, R16) series connection back is parallelly connected with two resistance (R15, R17);
The current sampling unit (4) that is connected with said output rectification filtering unit (3) comprises four parallel resistor (R18, R19, R20, R21);
The signal amplification unit (5) that is connected with said current sampling unit (4) through resistance (R22); Comprise two-stage calculation amplifier (IC2A, IC2B), resistance (R23, R24, R25, R26) and electric capacity (C13, C14, C15, C18); Resistance (R23, R25) and electric capacity (C13, C18) is ground connection respectively; Resistance (R24) links to each other with 2 ends of said operational amplifier (IC2A) with electric capacity (C14) parallel connection back; Resistance (R26) links to each other with 6 ends of said operational amplifier (IC2B) with electric capacity (C15) parallel connection back, and 1 end of operational amplifier (IC2A) links to each other with 5 ends of operational amplifier (IC2B);
The central control unit (6) that links to each other with said signal amplification unit (5) comprises high speed microprocessor (IC3), electric capacity (C17), resistance (R28) and LED, said resistance (R28) be connected to high speed microprocessor (IC3), electric capacity (C17) ground connection after LED connects.
2. the charger of zero stand-by power consumption according to claim 1; It is characterized in that: said central control unit (6) is connected through switch control unit (7) with rectification filtering unit (1); Said switch control unit (7) comprises optical coupler (IC4), controllable silicon (Q1), touches button (SW), resistance (R2, R3, R29) and electric capacity (C2, C3); 1 pin of said optical coupler (IC4) links to each other with resistance (R29), and 2 pin link to each other with central control unit (6); Said 1 pin that touches button (SW) links to each other with 4 pin and the resistance (R3) of optical coupler (IC4), touches 2 pin of button (SW) and links to each other with 6 pin of optical coupler (IC4), the G utmost point and the electric capacity (C3) of controllable silicon (Q1); The T2 utmost point of said controllable silicon (Q1) links to each other with resistance (R2), resistance (R3) and differential mode inductance (L1), and the T1 utmost point links to each other with 2 pin of electric capacity (C2), 1 pin and rectifier bridge (BG1) 3 pin of electric capacity (C3), resistance (R2) and electric capacity (C2) series connection.
3. the charger of zero stand-by power consumption according to claim 1; It is characterized in that: said central control unit (6) also comprises floating charge school checkpoint switch (K1), cuts out checkpoint switch (K2), resistance (27) and electric capacity (C16), and resistance (27) is connected to the RESET end of closing checkpoint switch (K2) and high speed microprocessor (IC3).
4. the charger of zero stand-by power consumption according to claim 1 is characterized in that: said resistance (R18, R19, R20, R21) is the resistance of high accuracy, low resistance.
5. the charger of zero stand-by power consumption according to claim 1 is characterized in that: said operational amplifier (IC2A, IC2B) is high-gain, the operational amplifier of low noise.
6. the charger of zero stand-by power consumption according to claim 1 is characterized in that: said high speed microprocessor (IC3) is highly integrated, as to have mould/number conversion microprocessor.
7. the charger of zero stand-by power consumption according to claim 1 is characterized in that: said central control unit monitoring charging current and charging interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200067154U CN202513641U (en) | 2012-01-04 | 2012-01-04 | Charger with zero standby power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200067154U CN202513641U (en) | 2012-01-04 | 2012-01-04 | Charger with zero standby power consumption |
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| CN202513641U true CN202513641U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200067154U Expired - Fee Related CN202513641U (en) | 2012-01-04 | 2012-01-04 | Charger with zero standby power consumption |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437627A (en) * | 2012-01-04 | 2012-05-02 | 耐思电气(嘉兴)有限公司 | Charger without standby power consumption |
| CN103810066A (en) * | 2012-11-14 | 2014-05-21 | 汤姆逊许可公司 | USB peripheral device detection on an unpowered bu |
| CN110329866A (en) * | 2019-07-15 | 2019-10-15 | 吕光华 | A kind of security protection elevator with dangerous investigation function |
-
2012
- 2012-01-04 CN CN2012200067154U patent/CN202513641U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437627A (en) * | 2012-01-04 | 2012-05-02 | 耐思电气(嘉兴)有限公司 | Charger without standby power consumption |
| CN102437627B (en) * | 2012-01-04 | 2014-03-05 | 耐思电气(嘉兴)有限公司 | Charger without standby power consumption |
| CN103810066A (en) * | 2012-11-14 | 2014-05-21 | 汤姆逊许可公司 | USB peripheral device detection on an unpowered bu |
| CN110329866A (en) * | 2019-07-15 | 2019-10-15 | 吕光华 | A kind of security protection elevator with dangerous investigation function |
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