CN202159236U - Standby switch circuit and miniature electronic device - Google Patents
Standby switch circuit and miniature electronic device Download PDFInfo
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- CN202159236U CN202159236U CN2011201702446U CN201120170244U CN202159236U CN 202159236 U CN202159236 U CN 202159236U CN 2011201702446 U CN2011201702446 U CN 2011201702446U CN 201120170244 U CN201120170244 U CN 201120170244U CN 202159236 U CN202159236 U CN 202159236U
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Abstract
The utility model discloses a standby switch circuit which is used for controlling the power supply input of a device. The standby switch circuit comprises a signal processing chip, a touch switch, an electronic switch, a starting circuit and a locking circuit. The signal processing chip is used for outputting locking or shutdown signals to control on and off of the electronic switch, and for realizing the power-on or standby state of a device. The touch switch is used for transmitting power-on or shutdown control instructions to the signal processing chip after the touch switch is turned on. The electronic switch is used for turning on or turning off the device and the power of the signal processing chip based on the control signals output by the signal processing chip. The starting circuit is used for turning on the electronic switch and finishing power-on and starting-up when the touch switch is turned on. The locking circuit is used for controlling the electronic switch and keeping the electronic switch in a turning-on state after locking signals from the signal processing chip are received. The locking circuit is also used for controlling the turning-off of the electronic switch so that the device enters a standby state after shutdown signals from the signal processing chip are received. The utility model also discloses a miniature electronic device. According to the utility model, the signal processing chip stays in a power shutdown state while the device is under a standby state, so that electricity consumption of the circuit is almost zero.
Description
Technical field
The utility model relates to standby switch circuit, particularly a kind of standby switch circuit and miniaturized electronics.
Background technology
For adopting battery powered small-sized electronic product, the flying power of battery is an important indicator, is limited by appearance and modeling and considers and space constraint; When circuit design; Mechanical switch often is not set, and is to use touch-switch or soft-touch control, in order to when not using electronic product; Thoroughly turn-off powered battery, make product be in holding state.Like products such as mobile phones.Not only in normal operation power consumption is little just to require electronic product, also requires simultaneously under user mode not, and power consumption is also little.Low-power consumption under holding state adopts the MCU (Micro Control Unit, micro-control unit) of low-power consumption to support usually, just can accomplish.
At present, battery powered small-sized electronic product is selected the MCU with low standby power loss usually for use; As shown in Figure 1, the MCU generation energy consumption that also will work under this moment holding state, battery life is shorter; The little application that is fit to small-sized electronic product is like fast gate-type 3D glasses etc.Simultaneously, the MCU of low-power consumption is also higher with respect to common MCU cost.
The utility model content
The fundamental purpose of the utility model provides a kind of standby switch circuit and miniaturized electronics, is intended to realize through standby switch circuit the low standby power loss of small-sized electronic product, realizes open and close machine and the operation of other defined function through a touch-switch.
The utility model proposes a kind of standby switch circuit, is connected with battery supply, is used for the power supply input of equipment is controlled, and said standby switch circuit comprises:
Be used to export locking or off signal and control the break-make of said electronic switch, realize device power-up or get into the signal processing chip of holding state;
After being used for connecting, transmit the touch-switch of steering order to the said signal processing chip of start or shutdown;
Be used for turning on and off the electronic switch of the power supply of equipment and said signal processing chip according to the control signal of said signal processing chip output;
Be used for when said touch-switch is connected, said electronic switch being connected, accomplish starting up's start-up circuit;
Be used for when receiving the locking signal of signal processing chip, control said electronic switch and keep on-state; When receiving the off signal of signal processing chip, control said electronic switch and break off, make equipment get into the lock-in circuit of holding state.
Preferably, also comprise the control input circuit; The input end of said electronic switch is connected with battery supply, and its output terminal is connected with the power supply input port of device power supply (DPS) and said signal processing chip respectively;
The input end of said touch-switch is connected with said battery supply, and its output terminal is connected with the general input port of said lock-in circuit and said signal processing chip respectively with said control input circuit via said start-up circuit;
Said lock-in circuit also is connected with the general delivery outlet of said signal processing chip, and also is connected with electronic switch between lock-in circuit and the start-up circuit.
Preferably, said electronic switch comprises first resistance and metal-oxide-semiconductor, and the S utmost point of said metal-oxide-semiconductor connects battery supply, and its D utmost point connects the power supply input port of signal processing chip and the power input of equipment, and said first resistance is parallel to the S utmost point and the G interpolar of said metal-oxide-semiconductor.
Preferably, said start-up circuit comprises first triode and second resistance, and the base stage of said first triode is connected with the second resistance output terminal, and its collector is connected to the G utmost point of said metal-oxide-semiconductor, its grounded emitter;
The input end of said touch-switch connects battery supply, is connected in series said second resistance between the base stage of its output terminal and said first triode;
Said lock-in circuit comprises second triode, the 6th resistance and the 4th resistance; Be connected in series said the 6th resistance between the general delivery outlet of said signal processing chip and the base stage of said second triode; The collector of said second triode is connected with the G utmost point of said metal-oxide-semiconductor; Its grounded emitter, said the 4th resistance are connected between the general delivery outlet and its power supply input port of said signal processing chip.
Preferably; Said control input circuit comprises the 3rd triode and the 5th resistance; The collector of said the 3rd triode is connected with the general input port of said signal processing chip; Its base stage is connected with the output terminal of said second resistance, its grounded emitter, and said the 5th resistance string is connected between the general input port and power supply input port of said signal processing chip.
Preferably, said signal processing chip is provided with resolution module, is used for according to different the touching by the time of said touch-switch, sends the Different control instruction.
Preferably, said metal-oxide-semiconductor is a P type metal-oxide-semiconductor, and said first triode, second triode and the 3rd triode are NPN type triode.
The utility model proposes a kind of miniaturized electronics again, comprises standby switch circuit, and said standby switch circuit is connected with battery supply, is used for the power supply input of equipment is controlled, and said standby switch circuit comprises:
Be used to export locking or off signal and control the break-make of said electronic switch, realize device power-up or get into the signal processing chip of holding state;
After being used for connecting, transmit the touch-switch of steering order to the said signal processing chip of start or shutdown;
Be used for turning on and off the electronic switch of the power supply of equipment and said signal processing chip according to the control signal of said signal processing chip output;
Be used for when said touch-switch is connected, said electronic switch being connected, accomplish starting up's start-up circuit;
Be used for when receiving the locking signal of signal processing chip, control said electronic switch and keep on-state; When receiving the off signal of signal processing chip, control said electronic switch and break off, make equipment get into the lock-in circuit of holding state.
Preferably, said miniaturized electronics is fast gate-type 3D glasses.
In the utility model standby switch circuit, when start, start-up circuit is connected electronic switch, accomplishes the starting up; Pressing or discharging of touch-switch through the control input circuit, transmits instruction for common MCU; Common MCU output locking or shutdown (release) signal, the break-make through lock-in circuit control electronic switch realizes turning on and off of device power supply (DPS); Behind the starting up and after the touch-switch release, by MCU output lock-in circuit control signal, lock-in circuit makes the electronic switch connection and is in open state; After lock-in circuit was received shutdown command, the level counter-rotating was broken off electronic switch, and circuit is in the outage released state, and apparatus gets into holding state.Electronic switch breaks off, and this moment, MCU was in power failure state, and unique what link to each other with power supply is electronic switch; And the metal-oxide-semiconductor that constitutes electronic switch is in off state; Present high impedance, thereby power consumption very little (several microamperes) is almost nil, adopts common MCU can reach the effect of the MCU of low power consuming; The different durations that touch-switch is connected are defined as difference in functionality (as switching about start, standby or 3D glasses etc.), have realized that a touch-switch accomplishes multiple function operations.
Description of drawings
Fig. 1 is the synoptic diagram of existing stand-by circuit;
Fig. 2 is the structural representation of the utility model standby switch circuit first embodiment;
Fig. 3 is the circuit diagram of the utility model standby switch circuit first embodiment;
Fig. 4 is the circuit diagram of the fast gate-type 3D glasses of the utility model embodiment;
Fig. 5 is the workflow diagram of the fast gate-type 3D glasses of the utility model standby switch circuit.
The realization of the utility model purpose, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
With reference to Fig. 2, Fig. 2 is the structural representation of the utility model standby switch circuit first embodiment.This standby switch circuit is connected with the power supply of supplying cell; Be used for the break-make that the power supply of equipment is imported is controlled; This standby switch circuit comprises signal processing chip 100, electronic switch 200, start-up circuit 300, lock-in circuit 400, touch-switch K1 and control input circuit 500, wherein
Said signal processing chip 100 is used to export the break-make of locking or off signal control electronic switch 200,600 starts of realization equipment or entering holding state; Signal processing chip 100 can be common MCU, needs not be the MCU of low-power consumption, and signal processing chip 100 can also be for including the signal processing chip of MCU function.
The input end of said touch-switch K1 is connected with battery supply, and its output terminal is connected with the general input port of lock-in circuit 400 and signal processing chip 100 respectively with control input circuit 500 via start-up circuit 300; Control the current switching of the start-up circuit 300 of flowing through, control input circuit 500 through touch-switch K1.After touch-switch K1 connects, transmit corresponding instruction for signal processing chip 100 through control input circuit 500.
The input end of said electronic switch 200 is connected with battery supply, and the output terminal of electronic switch 200 is connected with the power supply input port of equipment 600 power supplys and signal processing chip 100 respectively; Electronic switch 200 turns on and off the power supply of equipment 600 and signal processing chip 100 according to the control signal of signal processing chip 100 outputs.
When said start-up circuit 300 is connected at touch-switch K1, electronic switch 200 is connected, accomplished the starting up.
Lock-in circuit 400 also is connected with the general delivery outlet of signal processing chip 100, and also is connected with electronic switch 200 between lock-in circuit 400 and the start-up circuit 300; Lock-in circuit 400 is used for when receiving the locking signal of signal processing chip 100, and its control electronic switch 200 is kept on-state; When receiving the off signal of signal processing chip 100, its control electronic switch 200 breaks off, and equipment 600 gets into holding state.
Under holding state, signal processing chip 100, lock-in circuit 400, start-up circuit 300, control input circuit 500 all are in power failure state, thereby consumed power not; It is unique that what link to each other with power supply is electronic switch 200; Electronic switch 200 is in off state, presents high impedance, thereby power consumption very little (several microamperes) is almost nil; This also is the unique power consumption source of holding state, has therefore realized ultralow stand-by power consumption.Prior art is under ideal case, and signal processing chip 100 partial circuits will work on, if do not select the standby signal process chip 100 of low-power consumption for use, its power consumption will be much larger than several microamperes.
With reference to Fig. 3, Fig. 3 is the physical circuit synoptic diagram of the utility model standby switch circuit first embodiment.Electronic switch 200 comprises first resistance R 1 and metal-oxide-semiconductor Q1; MOS (metal-oxid-semiconductor; Metal-oxide-semicondutor; Also claim field effect transistor) the S utmost point of pipe connects battery supply, and its D utmost point connects the power supply input port of signal processing chip 100 and the power input of equipment 600, and first resistance R 1 is parallel to the S utmost point and the G interpolar of metal-oxide-semiconductor Q1; Metal-oxide-semiconductor Q1 is a P type metal-oxide-semiconductor.
Start-up circuit 300 comprises the first triode Q2 and second resistance R 2 (being current-limiting resistance), and the base stage of the first triode Q2 is connected with the output terminal of second resistance R 2, and its collector is connected to the G utmost point of metal-oxide-semiconductor Q1, its grounded emitter;
The input end of touch-switch K1 connects battery supply, is connected in series second resistance R 2 between the base stage of its output terminal and the first triode Q2.
Lock-in circuit 400 comprises that the second triode Q3, the 6th resistance R 6 and the 4th resistance R 4 are (for being arranged in the signal processing chip 100; The 4th resistance R 4 can be omitted); Be connected in series the 6th resistance R 6 between the general delivery outlet of signal processing chip 100 and the base stage of the second triode Q3; The collector of the second triode Q3 is connected with the G utmost point of metal-oxide-semiconductor Q1, its grounded emitter, and the 4th resistance R 4 is connected between the general delivery outlet and power supply input port of signal processing chip 100.
The first above-mentioned triode Q2, the second triode Q3 and the 3rd triode Q4 are NPN type triode.
The general delivery outlet GPIO1 mouth of signal processing chip 100 is the block level delivery outlet; General input port GPIO2 mouth is the input port of control input circuit 500.Standby/the start process of standby switch circuit is following:
When touch-switch K1 connects (greater than N second, can set), metal-oxide-semiconductor Q1 conducting, complete machine power supply; The general delivery outlet GPIO1 output block level (high level) of signal processing chip 100 through the 6th resistance R 6 current limlitings, is added to the base stage of the second triode Q3; Make the second triode Q3 saturated, its collector potential descends, and the G electrode potential of electronic switch 200MOS pipe Q1 descends; Cause the S utmost point and the D interpolar of metal-oxide-semiconductor Q1 to be connected, discharge touch-switch K1 this moment, complete machine gets into normal operating conditions.
In normal operation, press touch-switch K1, make the 3rd triode Q4 saturation conduction through second resistance R 2; The collector of the 3rd triode Q4 is drawn to be low level, and the general input port GPIO2 of signal processing chip 100 draws equally and is low level, and the low level time that detects general input port GPIO2 when signal processing chip 100 continues greater than N during second; Signal processing chip 100 makes the level of general delivery outlet GPIO1 be reversed to low level, and it is saturated that the second triode Q3 is withdrawed from, and entering ends; Discharge touch-switch K1 this moment; Then the G electrode potential of metal-oxide-semiconductor Q1 rises, and makes metal-oxide-semiconductor Q1 get into off state, and complete machine gets into holding state.
The utility model proposes a kind of miniaturized electronics again, includes standby switch circuit, and standby switch circuit has comprised whole technical schemes of the foregoing description standby switch circuit, repeats no more at this.Miniaturized electronics comprises fast gate-type 3D (three-dimensional) glasses, a specific embodiment of the fast gate-type 3D glasses of following discloses.
With reference to Fig. 4, Fig. 4 is the circuit diagram of the fast gate-type 3D glasses of the utility model embodiment.Fast gate-type 3D glasses have comprised whole technical schemes of above-mentioned standby switch circuit embodiment; Repeat no more at this; Fast gate-type 3D glasses also comprise the diode D1 that is serially connected in said signal processing chip 100 power supply input ports; Equipment 600 electric currents pour in down a chimney into locking switch when preventing to shut down, and are provided with capacitor C 1 and resistance R 3 for being used to prevent the filtering circuit of electromagnetic interference (EMI) in the base stage of the 3rd triode Q4.
After fast gate-type 3D glasses get into normal operating conditions, realize standby, need continue to press touch-switch K1 reach 3s (preestablishing) above after, discharge touch-switch K1 again, then complete machine will get into holding state.
In normal operation, press touch-switch K1, the 3rd triode Q4 that then controls input circuit 500 is in the saturation conduction state; The PIN10 of signal processing chip 100 is drawn as low level; When the low duration of the PIN10 of signal processing chip 100 during greater than 3s, 100 of signal processing chips think to have received standby command, and the PIN7 output level transfers low level to by high level; The second triode Q3 ends, and lock-in circuit 400 is in release conditions.At this moment, if discharge touch-switch K1, then the metal-oxide-semiconductor Q1G electrode potential of electronic switch 200 raises, and electronic switch 200 is in off state, and complete machine changes holding state over to.At this moment; Universal signal process chip 100 and peripheral circuit all are in non-power supply state, have only the metal-oxide-semiconductor Q1 that constitutes electronic switch 200 to be connected with power supply, and metal-oxide-semiconductor Q1 are in the high-impedance state of shutoff; Therefore power consumption (i.e. electric leakage) is merely several microamperes, has realized the super low-power consumption of standby.
Under holding state, realize start, need continue equally to press touch-switch K1 reach 3s above after; Discharge, power supply provides electric current for the first triode Q2, makes the first triode Q2 saturation conduction again; The G electrode potential of metal-oxide-semiconductor Q1 reduces, the S utmost point of metal-oxide-semiconductor Q1 and the conducting of D interpolar, and power supply is through the S utmost point and the D utmost point of metal-oxide-semiconductor Q1; And diode D1 gives signal processing chip 100 and 600 power supplies of other equipment, when continuing to reach more than the 3S by touch-switch K1, and signal processing chip 100 completion that resets; The PIN7 of signal processing chip 100 is output as the lock control signal of high level, offers the second triode Q3 through the 6th resistance R 6, makes the second triode Q3 saturation conduction; At this moment, discharge touch-switch K1, because of the saturation conduction of lock-in circuit 400 second triode Q3; Therefore the S utmost point and the D interpolar of metal-oxide-semiconductor Q1 still are in conducting state, and complete machine is in the (conducting of electronic switch 200 in normal operation promptly, of continued power state; Lean on signal processing chip 100 and lock-in circuit 400 to keep), boot action is so far accomplished, and complete machine gets into normal operating conditions.
When in normal operation; If the of short duration touch-switch K1 that presses; Cause low duration that signal processing chip 100 detects PIN10 less than 3s, then signal processing chip 100 thinks that what receive is the right and left eyes switching signal, carry out L/R (about) blocked operation; When guaranteeing that the user watches 3D, the correctness of the switching of right and left eyes.
As shown in Figure 5, be the workflow diagram of the fast gate-type 3D glasses of the utility model standby switch circuit.Specifically comprise following step:
1, touch-switch K1 presses;
2, press the time when during second, carrying out next step greater than N, otherwise, the first step of reforming;
3, signal processing chip 100 resets, and complete machine starts;
4, the PIN7 of signal processing chip 100 output high level, the second triode Q3 saturation conduction, electronic switch 200 is from lock-out state;
5, the level state of signal processing chip 100 monitoring PIN10;
6, PIN10 is the low level time when during second, carrying out for the 8th step greater than N, otherwise, carry out next step;
7, behind the execution L/R blocked operation, reformed for the 6th step;
8, signal processing chip 100 is carried out power-off operation;
9, treat that pilot lamp lights after, discharge touch-switch K1;
10, complete machine shutdown.
The above is merely the preferred embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (10)
1. a standby switch circuit is connected with battery supply, is used for the power supply input of equipment is controlled, and it is characterized in that said standby switch circuit comprises:
Be used to export locking or off signal and control the break-make of said electronic switch, realize device power-up or get into the signal processing chip of holding state;
After being used for connecting, transmit the touch-switch of steering order to the said signal processing chip of start or shutdown;
Be used for turning on and off the electronic switch of the power supply of equipment and said signal processing chip according to the control signal of said signal processing chip output;
Be used for when said touch-switch is connected, said electronic switch being connected, accomplish starting up's start-up circuit;
Be used for when receiving the locking signal of signal processing chip, control said electronic switch and keep on-state; When receiving the off signal of signal processing chip, control said electronic switch and break off, make equipment get into the lock-in circuit of holding state.
2. standby switch circuit according to claim 1 is characterized in that, also comprises the control input circuit; The input end of said electronic switch is connected with battery supply, and its output terminal is connected with the power supply input port of device power supply (DPS) and said signal processing chip respectively;
The input end of said touch-switch is connected with said battery supply, and its output terminal is connected with the general input port of said lock-in circuit and said signal processing chip respectively with said control input circuit via said start-up circuit;
Said lock-in circuit also is connected with the general delivery outlet of said signal processing chip, and also is connected with electronic switch between lock-in circuit and the start-up circuit.
3. standby switch circuit according to claim 2; It is characterized in that; Said electronic switch comprises first resistance and metal-oxide-semiconductor; The S utmost point of said metal-oxide-semiconductor connects battery supply, and its D utmost point connects the power supply input port of signal processing chip and the power input of equipment, and said first resistance is parallel to the S utmost point and the G interpolar of said metal-oxide-semiconductor.
4. standby switch circuit according to claim 3; It is characterized in that said start-up circuit comprises first triode and second resistance, the base stage of said first triode is connected with the second resistance output terminal; Its collector is connected to the G utmost point of said metal-oxide-semiconductor, its grounded emitter;
The input end of said touch-switch connects battery supply, is connected in series said second resistance between the base stage of its output terminal and said first triode;
Said lock-in circuit comprises second triode, the 6th resistance and the 4th resistance; Be connected in series said the 6th resistance between the general delivery outlet of said signal processing chip and the base stage of said second triode; The collector of said second triode is connected with the G utmost point of said metal-oxide-semiconductor; Its grounded emitter, said the 4th resistance are connected between the general delivery outlet and its power supply input port of said signal processing chip.
5. according to claim 3 or 4 described standby switch circuits; It is characterized in that; Said control input circuit comprises the 3rd triode and the 5th resistance, and the collector of said the 3rd triode is connected with the general input port of said signal processing chip, and its base stage is connected with the output terminal of said second resistance; Its grounded emitter, said the 5th resistance string are connected between the general input port and power supply input port of said signal processing chip.
6. according to each described standby switch circuit in the claim 1 to 4, it is characterized in that said signal processing chip is provided with resolution module, be used for, send the Different control instruction according to different the touching of said touch-switch by the time.
7. standby switch circuit according to claim 5 is characterized in that, said metal-oxide-semiconductor is a P type metal-oxide-semiconductor, and said first triode, second triode and the 3rd triode are NPN type triode.
8. a miniaturized electronics comprises standby switch circuit, and said standby switch circuit is connected with battery supply, is used for the power supply input of equipment is controlled, and it is characterized in that said standby switch circuit comprises:
Be used to export locking or off signal and control the break-make of said electronic switch, realize device power-up or get into the signal processing chip of holding state;
After being used for connecting, transmit the touch-switch of steering order to the said signal processing chip of start or shutdown;
Be used for turning on and off the electronic switch of the power supply of equipment and said signal processing chip according to the control signal of said signal processing chip output;
Be used for when said touch-switch is connected, said electronic switch being connected, accomplish starting up's start-up circuit;
Be used for when receiving the locking signal of signal processing chip, control said electronic switch and keep on-state; When receiving the off signal of signal processing chip, control said electronic switch and break off, make equipment get into the lock-in circuit of holding state.
9. miniaturized electronics according to claim 8 is characterized in that, also comprises like each described standby switch circuit among the claim 2-7.
10. miniaturized electronics according to claim 9 is characterized in that, said miniaturized electronics is fast gate-type 3D glasses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201702446U CN202159236U (en) | 2011-05-25 | 2011-05-25 | Standby switch circuit and miniature electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201702446U CN202159236U (en) | 2011-05-25 | 2011-05-25 | Standby switch circuit and miniature electronic device |
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| Publication Number | Publication Date |
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| CN202159236U true CN202159236U (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201702446U Expired - Lifetime CN202159236U (en) | 2011-05-25 | 2011-05-25 | Standby switch circuit and miniature electronic device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295298A (en) * | 2013-05-13 | 2013-09-11 | 浙江杰程机车部件有限公司 | Key |
| CN106558980A (en) * | 2016-11-29 | 2017-04-05 | 广州金升阳科技有限公司 | It is a kind of to enable control circuit |
| CN106877273A (en) * | 2017-03-31 | 2017-06-20 | 上海与德科技有限公司 | The protection circuit and its method of backlight power supply system, terminal device |
| CN108028539A (en) * | 2015-09-17 | 2018-05-11 | 诺瓦斯株式会社 | Battery type supply unit, circuit and electronic equipment |
| CN111478554A (en) * | 2020-04-03 | 2020-07-31 | 深圳市长丰影像器材有限公司 | Power supply circuit based on touch switch |
-
2011
- 2011-05-25 CN CN2011201702446U patent/CN202159236U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295298A (en) * | 2013-05-13 | 2013-09-11 | 浙江杰程机车部件有限公司 | Key |
| CN108028539A (en) * | 2015-09-17 | 2018-05-11 | 诺瓦斯株式会社 | Battery type supply unit, circuit and electronic equipment |
| CN108028539B (en) * | 2015-09-17 | 2021-01-12 | 诺瓦斯株式会社 | Battery-operated power supply device, circuit, and electronic apparatus |
| CN106558980A (en) * | 2016-11-29 | 2017-04-05 | 广州金升阳科技有限公司 | It is a kind of to enable control circuit |
| CN106558980B (en) * | 2016-11-29 | 2019-04-19 | 广州金升阳科技有限公司 | A kind of enabled control circuit |
| CN106877273A (en) * | 2017-03-31 | 2017-06-20 | 上海与德科技有限公司 | The protection circuit and its method of backlight power supply system, terminal device |
| CN111478554A (en) * | 2020-04-03 | 2020-07-31 | 深圳市长丰影像器材有限公司 | Power supply circuit based on touch switch |
| CN111478554B (en) * | 2020-04-03 | 2025-02-11 | 深圳市长丰影像器材有限公司 | A power supply circuit based on touch switch |
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Granted publication date: 20120307 |