CN202353536U - Time adjustable switching circuit - Google Patents

Time adjustable switching circuit Download PDF

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Publication number
CN202353536U
CN202353536U CN2011204882421U CN201120488242U CN202353536U CN 202353536 U CN202353536 U CN 202353536U CN 2011204882421 U CN2011204882421 U CN 2011204882421U CN 201120488242 U CN201120488242 U CN 201120488242U CN 202353536 U CN202353536 U CN 202353536U
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China
Prior art keywords
resistance
diode
circuit
port
output
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Expired - Lifetime
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CN2011204882421U
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Chinese (zh)
Inventor
温振兴
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Hengonda Technology Co., Ltd.
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FUJIAN SANYUANDA SOFTWARE Co Ltd
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Abstract

The utility model discloses a time adjustable switching circuit. The circuit comprises a trigger circuit, a switching time adjusting circuit, a power on reset circuit and a key press, wherein the trigger circuit is provided with an input end, an output end and a reset end; the input end of the switching time adjusting circuit is grounded via the key press, and the output end of the switching time adjusting circuit is connected with the input end of the trigger circuit; the output end of the power on reset circuit is connected with the reset end of the trigger end; and the output end of the trigger circuit outputs a control signal. According to the technical scheme, one key switching can be achieved based on the matching of the switching time adjusting circuit, the power on reset circuit and the trigger circuit without the aid of a system, and a control system has functions of cold start and cold shutdown.

Description

The on/off circuit that a kind of time is adjustable
Technical field
The utility model relates to on/off circuit, relates in particular to adjustable on/off circuit of a kind of time.
Background technology
The scope of application of terminal electronic product constantly enlarges at present, and on/off circuit is had higher requirement, in the prior art, requires on/off circuit to have and prevents trembling the function that false action-proof and switching time are controlled.On/off circuit scans off signal through microcontroller in the prior art, and then the output control signal, the shutdown system power supply.When system in case of system halt occurring, system just can't shut down, and for some baroque handheld devices, dismantle battery-operated very loaded down with trivial details, thereby fault such as cause shutting down.
The utility model content
The technical problem that the utility model mainly solves provides adjustable on/off circuit of a kind of time, and the intervention that said circuit need not software programming can realize a key switch machine.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of time rearrangeable switch machine circuit is provided, and said circuit comprises circuits for triggering, switching on and shutting down time adjustment circuit, electrify restoration circuit, button; Said circuits for triggering have input, output and reset terminal; The input of said switching on and shutting down time adjustment circuit is through said button ground connection; Said switching on and shutting down time adjustment circuit output links to each other with the input of said circuits for triggering; The output of said electrify restoration circuit links to each other with the reset terminal of said circuits for triggering, and the output of said circuits for triggering is outwards exported control signal.
Wherein, said circuits for triggering comprise the 5th diode D5, the second diode D2, the second triode Q2, second resistance R 2, the 5th resistance R 5 and the 11 resistance R 11, trigger U1; Said trigger U1 comprises first port, second port, the 3rd port, the 4th port, the tenth port, the 11 port, the 14 port; Said second resistance R 2, the 5th resistance R 5 and the 11 resistance R 11 include first end, second end; Said the 5th diode D5 is a double direction diode, comprises first end, second end, the 3rd end; The positive pole of the second diode D2 connects the tenth port, and negative pole connects the 4th port; Second port of said trigger U1 connects first end of second resistance R 2; Second end of second resistance R 2 connects the collector electrode of the second triode Q2; The grounded emitter of the second triode Q2; Base stage connects first end of the 5th resistance R 5, and second end of the 5th resistance R 5 connects first end of said the 5th diode D5, the 14 port of the said trigger U1 of second termination of the 5th diode; First end of the 3rd termination the 11 resistance R 11 of the 5th diode D5, the other end ground connection of the 11 resistance R 11; The common junction that said the 5th resistance R 5 is connected with the 5th diode D5 is first common junction; The 3rd port of said first common junction, trigger, the 11 port of trigger are the input of said circuits for triggering; First port of said trigger U1 is the output of circuits for triggering, and the 4th port of said trigger U1 is the reset terminal of circuits for triggering.
Wherein, said switching on and shutting down time adjustment circuit comprises the first triode Q1, the 3rd diode D3, the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, the 3rd capacitor C 3; The output of said switching on and shutting down time adjustment circuit comprises first output, the 3rd output, the 11 output; The 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, the 3rd capacitor C 3 include first end, second end; Said the 4th resistance R 4, the 9th resistance R 9, first capacitor C 1 and the 3rd capacitor C 3 are adjustable device; Said the 3rd diode D3 is a bidirectional diode, comprises first end, second end, the 3rd end; The said first triode Q1 emitter connects power supply; Collector electrode connects first end of the tenth resistance R 10; The second end ground connection of the tenth resistance; The collector electrode of the said first triode Q1 connects first end of the 9th resistance R 9, and second end of the 9th resistance links to each other with the 3rd end of said the 3rd diode D3, and second end of said the 3rd diode D3 is connected in the collector electrode of the said first triode Q1; First end of said the 3rd diode D3 links to each other with second end of said the 4th resistance R 4, and first end of said the 4th resistance R 4 is connected in the collector electrode of said first triode; The common junction that second end of said the 4th resistance R 4 is connected with first end of said the 3rd diode D3 links to each other with first end of said first capacitor C 1, the second end ground connection of said first capacitor C 1; Second end of said the 9th resistance R 9 links to each other the second end ground connection of said the 3rd capacitor C 3 with the common node of the 3rd end of said the 3rd diode D3 with first end of said the 3rd capacitor C 3; First end of the collector electrode of the said first triode Q1 and said the 4th resistance R 4 is first output of said switching on and shutting down time adjustment circuit, and said first output connects first common junction in the said circuits for triggering; The common junction that second end of said the 4th resistance R 4 is connected with said the 3rd diode D3 is the 3rd output of said switching on and shutting down time adjustment circuit, and said the 3rd output connects the 3rd port of the trigger U1 in the said circuits for triggering; Second end of said the 9th resistance R 9 is the 11 output of said switching on and shutting down time adjustment circuit with the common junction that said the 3rd diode D3 is connected, and said the 11 output connects the 11 port of the trigger U1 in the said circuits for triggering.
Wherein, said the tenth resistance R 10 is a bleeder resistance.
Wherein, said electrify restoration circuit comprises the 15 resistance R 15 and the 4th capacitor C 4; One termination power of said the 4th capacitor C 4, the other end is through said the 15 resistance R 15 ground connection; The common junction that said the 15 resistance R 15 is connected with the 4th capacitor C 4 is the output of said electrify restoration circuit, and said output links to each other with the reset terminal of said circuits for triggering.
Wherein, said trigger U1 is a d type flip flop.
Wherein, the said first triode Q1 is the PNP pipe, and the second triode Q2 is the NPN pipe.
Wherein, the said switching on and shutting down time is regulated and comprises that also a button detects a mouthful P2.31; Also comprise a soft pass control mouthful P1.30 on the said reset circuit.
The beneficial effect of the utility model is: the on/off circuit that is different from prior art is through microcontroller scanning off signal; And then output control signal; The method of shutdown system power supply, the utility model provide a kind of time rearrangeable switch machine circuit, and this circuit comprises circuits for triggering, switching on and shutting down time adjustment circuit, electrify restoration circuit and button; The said switching on and shutting down time adjustment circuit ability by-pass cock machine time; The switching on and shutting down action of said circuits for triggering control control system, said electrify restoration circuit is controlled said circuits for triggering homing action, through the technical scheme of the utility model; Just can carry out the switching on and shutting down action automatically according to the time that presets in the back that pushes button, the intervention that the technical scheme of the utility model need not software programming can realize a key switch machine.
Description of drawings
Fig. 1 is the structured flowchart of the time rearrangeable switch machine circuit of the utility model embodiment;
Fig. 2 is a kind of circuit structure block diagram of execution mode of the time rearrangeable switch machine circuit of the utility model;
Fig. 3 is a kind of circuit diagram of execution mode of switching on and shutting down time adjustment circuit of the time rearrangeable switch machine circuit of the utility model;
Fig. 4 is a kind of circuit diagram of execution mode of circuits for triggering of the time rearrangeable switch machine circuit of the utility model;
Fig. 5 is a kind of circuit diagram of execution mode of electrify restoration circuit of the time rearrangeable switch machine circuit of the utility model.
Embodiment
By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with execution mode and accompanying drawing and give explanation.
See also Fig. 1, the utility model discloses a kind of time rearrangeable switch machine circuit, said circuit comprises circuits for triggering, switching on and shutting down time adjustment circuit, electrify restoration circuit, button; Said circuits for triggering have input, output and reset terminal; The input of said switching on and shutting down time adjustment circuit is through said button ground connection; Said switching on and shutting down time adjustment circuit output links to each other with the input of said circuits for triggering; The output of said electrify restoration circuit links to each other with the reset terminal of said circuits for triggering, and the output of said circuits for triggering is outwards exported control signal.
See also Fig. 4, the circuit diagram of a kind of execution mode of the circuits for triggering of the time rearrangeable switch machine circuit of the utility model.Said circuits for triggering comprise the 5th diode D5, the second diode D2, the second triode Q2, second resistance R 2, the 5th resistance R 5 and the 11 resistance R 11, trigger U1.One preferred embodiment in, said trigger U1 is a d type flip flop, the second triode Q2 is a NPN pipe, said the 5th diode D5 is a bidirectional diode.Wherein, said trigger U1 comprises first port, second port, the 3rd port, the 4th port, the tenth port, the 11 port, the 14 port; Said second resistance R 2, the 5th resistance R 5 and the 11 resistance R 11 include first end, second end; Said the 5th diode D5 comprises first end, second end, the 3rd end; The positive pole of the second diode D2 connects the tenth port, and negative pole connects the 4th port; Second port of said trigger U1 connects first end of second resistance R 2; Second end of second resistance R 2 connects the collector electrode of the second triode Q2; The grounded emitter of the second triode Q2; Base stage connects first end of the 5th resistance R 5, and second end of the 5th resistance R 5 connects first end of said the 5th diode D5, the 14 port of the said trigger U1 of second termination of the 5th diode; First end of the 3rd termination the 11 resistance R 11 of the 5th diode D5, the other end ground connection of the 11 resistance R 11; The common junction that said the 5th resistance R 5 is connected with the 5th diode D5 is first common junction; The 3rd port of said first common junction, trigger, the 11 port of trigger are the input of said circuits for triggering; First port of said trigger U1 is the output of circuits for triggering, and the 4th port of said trigger U1 is the reset terminal of circuits for triggering.
See also Fig. 3, the circuit diagram of a kind of execution mode of the switching on and shutting down time adjustment circuit of the time rearrangeable switch machine circuit of the utility model.Said switching on and shutting down time adjustment circuit comprises the first triode Q1, the 3rd diode D3, the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, the 3rd capacitor C 3.One preferred embodiment in, the 4th resistance R 4, the 9th resistance R 9, first capacitor C 1, the 3rd capacitor C 3 are adjustable device, said the tenth resistance R 10 is a bleeder resistance, said the 3rd diode D3 is a bidirectional diode, the said first triode Q1 is the PNP pipe.The output of said switching on and shutting down time adjustment circuit comprises first output, the 3rd output, the 11 output; The 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, the 3rd capacitor C 3 include first end, second end, and said the 3rd diode D3 comprises first end, second end, the 3rd end; The said first triode Q1 emitter connects power supply; Collector electrode connects first end of the tenth resistance R 10; The second end ground connection of the tenth resistance; The collector electrode of the said first triode Q1 connects first end of the 9th resistance R 9, and second end of the 9th resistance links to each other with the 3rd end of said the 3rd diode D3, and second end of said the 3rd diode D3 is connected in the collector electrode of the said first triode Q1; First end of said the 3rd diode D3 links to each other with second end of said the 4th resistance R 4, and first end of said the 4th resistance R 4 is connected in the collector electrode of said first triode; The common junction that second end of said the 4th resistance R 4 is connected with first end of said the 3rd diode D3 links to each other with first end of said first capacitor C 1, the second end ground connection of said first capacitor C 1; Second end of said the 9th resistance R 9 links to each other the second end ground connection of said the 3rd capacitor C 3 with the common node of the 3rd end of said the 3rd diode D3 with first end of said the 3rd capacitor C 3; First end of the collector electrode of the said first triode Q1 and said the 4th resistance R 4 is first output of said switching on and shutting down time adjustment circuit, and said first output connects first common junction in the said circuits for triggering; The common junction that second end of said the 4th resistance R 4 is connected with said the 3rd diode D3 is the 3rd output of said switching on and shutting down time adjustment circuit, and said the 3rd output connects the 3rd port of the trigger U1 in the said circuits for triggering; Second end of said the 9th resistance R 9 is the 11 output of said switching on and shutting down time adjustment circuit with the common junction that said the 3rd diode D3 is connected, and said the 11 output connects the 11 port of the trigger U1 in the said circuits for triggering.
See also Fig. 5, the circuit diagram of a kind of execution mode of the electrify restoration circuit of the time rearrangeable switch machine circuit of the utility model.Said electrify restoration circuit comprises the 15 resistance R 15 and the 4th capacitor C 4; One termination power of said the 4th capacitor C 4, the other end is through said the 15 resistance R 15 ground connection; The common junction that said the 15 resistance R 15 is connected with the 4th capacitor C 4 is the output of said electrify restoration circuit, and said output links to each other with the reset terminal of said circuits for triggering.
See also Fig. 2, in another preferred implementation of utility model, said switching on and shutting down time adjustment circuit comprises that also a button detects a mouthful P2.31, also comprises a soft pass control mouthful P1.30 on the said reset circuit; Said time rearrangeable switch machine circuit detects a mouthful P2.31 output soft-off control signal through said button; Said time rearrangeable switch machine circuit receives soft pass control signal through a said soft pass control mouthful P1.30; After said electrify restoration circuit receives soft pass control signal; Send reseting controling signal to said circuits for triggering, thereby make circuits for triggering export soft pass control signal, realize the purpose of soft pass.
Rearrangeable switch machine circuit of described time of the utility model links to each other with an outer connected control system, the switching on and shutting down action of the outer connected control system of control, and the embodiment of the technical scheme of the utility model embodiment is following:.
The hardware start process is following:
When outer connected control system powers up; The start key is not pressed, and the RC reset circuit that constitutes through the 4th capacitor C 4 and the 15 resistance R 15 resets to trigger U1, low level of output output of trigger U1; Second port output high level; And pass through second resistance R, 2, the four diode D4 second capacitor C 2 is carried out quick charge, thereby the initial value of guaranteeing second port of trigger U1 is a low level.
Press the start key; First triode Q1 conducting this moment is charged to first capacitor C 1 and the 3rd capacitor C 3 respectively through the 4th resistance R 4 and the 9th resistance R 9, and wherein the 4th resistance R 4 and first capacitor C 1 are the scalable devices; Be used for being provided with the available machine time; Adjustable the 9th resistance R 9 is used for being provided with the unused time with adjustable the 3rd capacitor C 3, when the terminal voltage of first capacitor C 1 reach supply voltage 70 percent the time since the 14 port of d type flip flop U1 by clamped at high level; Make that the 11 port of d type flip flop U1 is inoperative; At this moment the 3rd input port of d type flip flop U1 will recognize the rising edge signal, and high level signal of output output of d type flip flop U1 is given outer connected control system power enable end, thereby realizes hard start.
The hardware shutdown process is following:
After the start; Unclamp button; At this moment second capacitor C 2 can be carried out repid discharge through two-way the 5th diode D5 and the 11 resistance R 11, and second output of said d type flip flop U1 is low level, makes that the 14 port of d type flip flop U1 is a low level; At this moment the 11 port of d type flip flop U1 just works, and waits for that next button presses.
Press the start key once more; The first triode Q1 conducting of said time conditioned circuit; Respectively first capacitor C 1 and the 3rd capacitor C 3 are charged with adjustable the 9th resistance R 9 through adjustable the 4th resistance R 4 simultaneously; Because this moment, system was in open state, also can not impact integrated circuit even the voltage on first capacitor C 1 reaches 70 percent of supply voltage.At this moment as long as the terminal voltage of the 3rd capacitor C 3 reaches 70 percent of supply voltage; The 11 port of d type flip flop U1 will recognize the rising edge signal; The tenth port of d type flip flop U1 will be exported a high level signal; Through the second diode D2 four-input terminal of d type flip flop U1 is resetted, at this moment the output of d type flip flop U1 will be exported a low level and give outer connected control system power enable end, realize the hardware shutdown.
As the optimized technical scheme of the utility model embodiment, said on/off circuit also has the function of software shutdown, and the software shutdown process is following:
Press the start key, time rearrangeable switch machine circuit output signal, and after detecting a mouthful P2.31 and be transferred to outer connected control system through button; Outer connected control system will detect high level; If at this moment confirm shutdown, after the wait button unclamps, the signal input part of outer connected control system will detect low level; And pass through said soft pass control mouthful P1.30 to said time rearrangeable switch machine circuit input control signal; At this moment the reset output terminal of electrify restoration circuit will be exported a high level signal, and d type flip flop U1 is resetted, thereby realize the software shutdown.
The technical scheme of the utility model embodiment adopts d type flip flop and switching on and shutting down time adjustment circuit, through the RC parameter in the change circuit can the configuration switch machine time.Hard shutdown is that soft-off is invalid when preventing system in case of system halt, and this duration can be realized shutdown by the start key.And that said soft-off can reduce the hardware available machine time is long, and soft-off and control system cooperatively interact, and can point out the user whether to preserve parameter as required, thereby prevents that system data from losing.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model specification 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 (8)

1. a time rearrangeable switch machine circuit is characterized in that, comprises circuits for triggering, switching on and shutting down time adjustment circuit, electrify restoration circuit, button;
Said circuits for triggering have input, output and reset terminal;
The input of said switching on and shutting down time adjustment circuit is through said button ground connection; Said switching on and shutting down time adjustment circuit output links to each other with the input of said circuits for triggering; The output of said electrify restoration circuit links to each other with the reset terminal of said circuits for triggering, and the output of said circuits for triggering is outwards exported control signal.
2. according to rearrangeable switch machine circuit of said time of claim 1, it is characterized in that: said circuits for triggering comprise the 5th diode D5, the second diode D2, the second triode Q2, second resistance R 2, the 5th resistance R 5 and the 11 resistance R 11, trigger U1;
Said trigger U1 comprises first port, second port, the 3rd port, the 4th port, the tenth port, the 11 port, the 14 port;
Said second resistance R 2, the 5th resistance R 5 and the 11 resistance R 11 include first end, second end; Said the 5th diode D5 is a bidirectional diode, comprises first end, second end, the 3rd end;
The positive pole of the second diode D2 connects the tenth port, and negative pole connects the 4th port;
Second port of said trigger U1 connects first end of second resistance R 2; Second end of second resistance R 2 connects the collector electrode of the second triode Q2; The grounded emitter of the second triode Q2; Base stage connects first end of the 5th resistance R 5, and second end of the 5th resistance R 5 connects first end of said the 5th diode D5, the 14 port of the said trigger U1 of second termination of the 5th diode; First end of the 3rd termination the 11 resistance R 11 of the 5th diode D5, the other end ground connection of the 11 resistance R 11;
The common junction that said the 5th resistance R 5 is connected with the 5th diode D5 is first common junction; The 3rd port of said first common junction, trigger U1, the 11 port of trigger U1 are the input of said circuits for triggering; First port of said trigger U1 is the output of circuits for triggering, and the 4th port of said trigger U1 is the reset terminal of circuits for triggering.
3. according to rearrangeable switch machine circuit of said time of claim 2, it is characterized in that: said switching on and shutting down time adjustment circuit comprises the first triode Q1, the 3rd diode D3, the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, the 3rd capacitor C 3;
The output of said switching on and shutting down time adjustment circuit comprises first output, the 3rd output, the 11 output;
The 4th resistance R 4, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, the 3rd capacitor C 3 include first end, second end; Said the 4th resistance R 4, the 9th resistance R 9, first capacitor C 1 and the 3rd capacitor C 3 are adjustable device; Said the 3rd diode D3 is a bidirectional diode, comprises first end, second end, the 3rd end;
The said first triode Q1 emitter connects power supply; Collector electrode connects first end of the tenth resistance R 10; The second end ground connection of the tenth resistance; The collector electrode of the said first triode Q1 connects first end of the 9th resistance R 9, and second end of the 9th resistance links to each other with the 3rd end of said the 3rd diode D3, and second end of said the 3rd diode D3 is connected in the collector electrode of the said first triode Q1; First end of said the 3rd diode D3 links to each other with second end of said the 4th resistance R 4, and first end of said the 4th resistance R 4 is connected in the collector electrode of said first triode;
The common junction that second end of said the 4th resistance R 4 is connected with first end of said the 3rd diode D3 links to each other with first end of said first capacitor C 1, the second end ground connection of said first capacitor C 1;
Second end of said the 9th resistance R 9 links to each other the second end ground connection of said the 3rd capacitor C 3 with the common node of the 3rd end of said the 3rd diode D3 with first end of said the 3rd capacitor C 3;
First end of the collector electrode of the said first triode Q1 and said the 4th resistance R 4 is first output of said switching on and shutting down time adjustment circuit, and said first output connects first common junction in the said circuits for triggering;
The common junction that second end of said the 4th resistance R 4 is connected with said the 3rd diode D3 is the 3rd output of said switching on and shutting down time adjustment circuit, and said the 3rd output connects the 3rd port of the trigger U1 in the said circuits for triggering;
Second end of said the 9th resistance R 9 is the 11 output of said switching on and shutting down time adjustment circuit with the common junction that said the 3rd diode D3 is connected, and said the 11 output connects the 11 port of the trigger U1 in the said circuits for triggering.
4. according to the adjustable on/off circuit of the said clock of claim 3, it is characterized in that: said the tenth resistance R 10 is bleeder resistance.
5. according to rearrangeable switch machine circuit of said time of claim 2, it is characterized in that: said electrify restoration circuit comprises the 15 resistance R 15 and the 4th capacitor C 4; One termination power of said the 4th capacitor C 4, the other end is through said the 15 resistance R 15 ground connection; The common junction that said the 15 resistance R 15 is connected with the 4th capacitor C 4 is the output of said electrify restoration circuit, and said output links to each other with the reset terminal of said circuits for triggering.
6. adjustable on/off circuit of time according to claim 2 is characterized in that: said trigger U1 is a d type flip flop.
7. according to claim 2 or the adjustable on/off circuit of 3 described clocks, it is characterized in that: the said first triode Q1 is the PNP pipe, and the second triode Q2 is the NPN pipe.
8. according to the adjustable on/off circuit of the said clock of claim 1, it is characterized in that: the said switching on and shutting down time is regulated and comprises that also a button detects a mouthful P2.31;
Also comprise a soft pass control mouthful P1.30 on the said reset circuit.
CN2011204882421U 2011-11-29 2011-11-29 Time adjustable switching circuit Expired - Lifetime CN202353536U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2011204882421U CN202353536U (en) 2011-11-29 2011-11-29 Time adjustable switching circuit

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102981425A (en) * 2012-11-27 2013-03-20 广东威创视讯科技股份有限公司 Startup and shutdown circuit
CN103226337A (en) * 2013-05-03 2013-07-31 深圳市科曼医疗设备有限公司 Startup and shutdown circuit
CN105227163A (en) * 2015-08-28 2016-01-06 青岛海信电器股份有限公司 Reset circuit and remote controller
CN103973287B (en) * 2014-05-21 2017-01-04 华为技术有限公司 On/off circuit
CN107979363A (en) * 2017-12-26 2018-05-01 广州视源电子科技股份有限公司 On/off circuit and electronic equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102981425A (en) * 2012-11-27 2013-03-20 广东威创视讯科技股份有限公司 Startup and shutdown circuit
CN102981425B (en) * 2012-11-27 2014-12-03 广东威创视讯科技股份有限公司 Startup and shutdown circuit
CN103226337A (en) * 2013-05-03 2013-07-31 深圳市科曼医疗设备有限公司 Startup and shutdown circuit
CN103226337B (en) * 2013-05-03 2015-09-16 深圳市科曼医疗设备有限公司 On/off circuit
CN103973287B (en) * 2014-05-21 2017-01-04 华为技术有限公司 On/off circuit
CN105227163A (en) * 2015-08-28 2016-01-06 青岛海信电器股份有限公司 Reset circuit and remote controller
CN107979363A (en) * 2017-12-26 2018-05-01 广州视源电子科技股份有限公司 On/off circuit and electronic equipment
CN107979363B (en) * 2017-12-26 2021-04-23 广州视源电子科技股份有限公司 Switching on and switching off circuit and electronic equipment

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