CN204928784U - Can realize turn -offing completely switching on and shutting down circuit of power - Google Patents
Can realize turn -offing completely switching on and shutting down circuit of power Download PDFInfo
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- CN204928784U CN204928784U CN201520715694.7U CN201520715694U CN204928784U CN 204928784 U CN204928784 U CN 204928784U CN 201520715694 U CN201520715694 U CN 201520715694U CN 204928784 U CN204928784 U CN 204928784U
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Abstract
The utility model discloses a can realize turn -offing completely switching on and shutting down circuit of power, including triode T1, triode T2, diode D1, diode D2, emitting diode D3, electric capacity C, resistance R1, resistance R2, resistance R3, resistance R4, resistance 5, resistance R6 and key switch K, triode T2's projecting pole is connected to triode T1's collecting electrode connecting resistance R1's one end, resistance R1's the other end, series resistance R3 between triode T1's collecting electrode and triode T2's the base, and triode T1's projecting pole connecting resistance R6 one end, signal output part kout is connected to the resistance R6 other end, and series resistance R2 between triode T1's base and signal output part kout. The utility model discloses a complete shutoff power can be accomplished to above -mentioned principle, realizes zero power consumption standby.
Description
Technical field
The utility model relates to on/off circuit, is specifically related to the on/off circuit that can realize complete power cutoff.
Background technology
Switching Power Supply utilizes modern power electronics technology, the time ratio that control switch pipe turns on and off, and maintain a kind of power supply of regulated output voltage, Switching Power Supply is generally made up of pulse width modulation (PWM) control IC and MOSFET.Along with development and the innovation of power electronic technology, switch power technology is also constantly being innovated.At present, Switching Power Supply to be widely used nearly all electronic equipment with small-sized, light weight and high efficiency feature, is the indispensable a kind of power mode of current electronics and information industry develop rapidly.And in existing on/off circuit, complete power cutoff cannot be accomplished, realize Zero-power-consumption standby.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides the on/off circuit that can realize complete power cutoff, can accomplish power cutoff completely, realize Zero-power-consumption standby.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: the on/off circuit that can realize complete power cutoff, comprise triode T1, triode T2, diode D1, diode D2, light-emitting diode D3, electric capacity C, resistance R1, resistance R2, resistance R3, resistance R4, resistance 5, resistance R6 and key switch K, one end of the collector electrode contact resistance R1 of described triode T1, the emitter of the other end connecting triode T2 of resistance R1, series resistance R3 between the collector electrode of triode T1 and the base stage of triode T2, emitter contact resistance R6 one end of triode T1, resistance R6 other end connection signal output Kout, series resistance R2 is gone back between the base stage and signal output part Kout of triode T1, the emitter and collector of described triode T2 connects 5 volts of VCC power supplys, one end of the collector electrode contact resistance R4 of triode T2, the other end of resistance R4 connects the positive pole of diode D2, and the negative pole of diode D2 connects a end of key switch K, and the b of case K switch holds the emitter of connecting triode T1, the collector electrode of the positive pole connecting triode T1 of described diode D1, the negative pole of diode D1 connects a end of key switch K, the two ends of described electric capacity C connect the negative pole of diode D2 and the emitter of triode T1, the grounded emitter of triode T1 respectively, the b end of described resistance R6 one end connecting key part K switch, other end connection signal output Kout, one end of described resistance R5 connects the b end of key switch K, the negative pole of other end connecting luminous diode D3, and the positive pole of diode D3 connects out-put supply end, at the positive pole also connection signal input Kin of diode D2.
Signal output part Kout in circuit is all connected single-chip microcomputer with signal input part, and when key switch K presses, triode T2 conducting, single-chip microcomputer power-on-reset, enters work.Detecting Kin whether low level, is not that low level just not processes, and is that then single-chip microcomputer exports Kout to low level is high level, triode T1 conducting, be equivalent to by bond distance by, light-emitting diode D3 is luminous, and out-put supply end is energized.When relieving key switch, Kin is through pull-up resistor, and be high level, single-chip microcomputer can normally work.During operation, button is pressed, and Kin is low level, and microprocessor detect is to long by 1 second, and Kout output low level, triode T1 ends, the power-off of out-put supply end.Decontrol button, triode T2 ends, single-chip microcomputer power-off..By software process, can realize short in start, long by shutdown.Single-chip microcomputer PIC16F84A, by simple program demonstration, confirms the feasibility of this circuit.Realization due to this process realizes controlling out-put supply end by the operation of operation push-button K switch, only needs Mechanical course key switch just can accomplish to close power-off completely former, realize Zero-power-consumption standby.Multiple diodes in this circuit are all the one-way conductions having used diode, reverse cut-off characteristics, ensure the safety of all parts.The setting of electric capacity is then the effect playing filtering.The setting of multiple resistance is then to divide to fall a part of voltage, ensures the safety of main components.
Described triode T1 is NPN pipe, and triode T2 is PNP pipe.
The model of described diode D1 and diode D2 is IN4148.1N4148 is a kind of small-sized cache switching diodes, and on-off ratio is comparatively rapid, is widely used in the higher circuit of signal frequency and carries out one-way conduction isolation, communication, computer board, TV set circuit and industrial control circuit.
Described resistance R1, resistance R2, resistance R3, resistance R4 are equal with resistance R6 resistance.
Compared with prior art, the beneficial effects of the utility model are: the realization due to this process realizes controlling out-put supply end by the operation of operation push-button K switch, only need Mechanical course key switch just can accomplish to close power-off completely former, realize Zero-power-consumption standby.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Be further elaborated the utility model below in conjunction with accompanying drawing, embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, the utility model comprises triode T1, triode T2, diode D1, diode D2, light-emitting diode D3, electric capacity C, the resistance R1 of 10 kilo-ohms, the resistance R2 of 10 kilo-ohms, the resistance R3 of 10 kilo-ohms, the resistance R4 of 10 kilo-ohms, the resistance 5 of 4 kilo-ohms, the resistance R6 of 10 kilo-ohms and key switch K, one end of the collector electrode contact resistance R1 of described triode T1, the emitter of the other end connecting triode T2 of resistance R1, series resistance R3 between the collector electrode of triode T1 and the base stage of triode T2, emitter contact resistance R6 one end of triode T1, resistance R6 other end connection signal output Kout, series resistance R2 is gone back between the base stage and signal output part Kout of triode T1, the emitter and collector of described triode T2 connects 5 volts of VCC power supplys, one end of the collector electrode contact resistance R4 of triode T2, the other end of resistance R4 connects the positive pole of diode D2, and the negative pole of diode D2 connects a end of key switch K, and the b of case K switch holds the emitter of connecting triode T1, the collector electrode of the positive pole connecting triode T1 of described diode D1, the negative pole of diode D1 connects a end of key switch K, the two ends of described electric capacity C connect the negative pole of diode D2 and the emitter of triode T1, the grounded emitter of triode T1 respectively, the b end of described resistance R6 mono-termination key part K switch, other end connection signal output Kout, one end of described resistance R5 connects the b end of key switch K, the negative pole of other end connecting luminous diode D3, and the positive pole of diode D3 connects out-put supply end, at the positive pole also connection signal input Kin of diode D2.
Signal output part Kout in circuit is all connected single-chip microcomputer with signal input part, and when key switch K presses, triode T2 conducting, single-chip microcomputer power-on-reset, enters work.Detecting Kin whether low level, is not that low level just not processes, and is that then single-chip microcomputer exports Kout to low level is high level, triode T1 conducting, be equivalent to by bond distance by, light-emitting diode D3 is luminous, and out-put supply end is energized.When relieving key switch, Kin is through pull-up resistor, and be high level, single-chip microcomputer can normally work.During operation, button is pressed, and Kin is low level, and microprocessor detect is to long by 1 second, and Kout output low level, triode T1 ends, the power-off of out-put supply end.Decontrol button, triode T2 ends, single-chip microcomputer power-off..By software process, can realize short in start, long by shutdown.Single-chip microcomputer PIC16F84A, by simple program demonstration, confirms the feasibility of this circuit.Realization due to this process realizes controlling out-put supply end by the operation of operation push-button K switch, only needs Mechanical course key switch just can accomplish to close power-off completely former, realize Zero-power-consumption standby.Multiple diodes in this circuit are all the one-way conductions having used diode, reverse cut-off characteristics, ensure the safety of all parts.The setting of electric capacity is then the effect playing filtering.The setting of multiple resistance is then to divide to fall a part of voltage, ensures the safety of main components.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: triode T1 is NPN pipe, and triode T2 is PNP pipe.Can better realize controlling.
The model of diode D1 and diode D2 is IN4148.1N4148 is a kind of small-sized cache switching diodes, and on-off ratio is comparatively rapid, is widely used in the higher circuit of signal frequency and carries out one-way conduction isolation, communication, computer board, TV set circuit and industrial control circuit.
Resistance R1, resistance R2, resistance R3, resistance R4 are equal with resistance R6 resistance.Can better realize controlling.
Just this utility model can be realized as mentioned above.
Claims (4)
1. can realize the on/off circuit of complete power cutoff, it is characterized in that: comprise triode T1, triode T2, diode D1, diode D2, light-emitting diode D3, electric capacity C, resistance R1, resistance R2, resistance R3, resistance R4, resistance 5, resistance R6 and key switch K, one end of the collector electrode contact resistance R1 of described triode T1, the emitter of the other end connecting triode T2 of resistance R1, series resistance R3 between the collector electrode of triode T1 and the base stage of triode T2, emitter contact resistance R6 one end of triode T1, resistance R6 other end connection signal output Kout, series resistance R2 is gone back between the base stage and signal output part Kout of triode T1, the emitter and collector of described triode T2 connects 5 volts of VCC power supplys, one end of the collector electrode contact resistance R4 of triode T2, the other end of resistance R4 connects the positive pole of diode D2, and the negative pole of diode D2 connects a end of key switch K, and the b of case K switch holds the emitter of connecting triode T1, the collector electrode of the positive pole connecting triode T1 of described diode D1, the negative pole of diode D1 connects a end of key switch K, the two ends of described electric capacity C connect the negative pole of diode D2 and the emitter of triode T1, the grounded emitter of triode T1 respectively, described resistance R6 one end connects the b end of button part K switch, other end connection signal output Kout, one end of described resistance R5 connects the b end of key switch K, the negative pole of other end connecting luminous diode D3, and the positive pole of diode D3 connects out-put supply end, at the positive pole also connection signal input Kin of diode D2.
2. the on/off circuit that can realize complete power cutoff according to claim 1, is characterized in that: described triode T1 is NPN pipe, and triode T2 is PNP pipe.
3. the on/off circuit that can realize complete power cutoff according to claim 1, is characterized in that: the model of described diode D1 and diode D2 is IN4148.
4. the on/off circuit that can realize complete power cutoff according to claim 1, is characterized in that: described resistance R1, resistance R2, resistance R3, resistance R4 are equal with resistance R6 resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715694.7U CN204928784U (en) | 2015-09-16 | 2015-09-16 | Can realize turn -offing completely switching on and shutting down circuit of power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715694.7U CN204928784U (en) | 2015-09-16 | 2015-09-16 | Can realize turn -offing completely switching on and shutting down circuit of power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204928784U true CN204928784U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520715694.7U Expired - Fee Related CN204928784U (en) | 2015-09-16 | 2015-09-16 | Can realize turn -offing completely switching on and shutting down circuit of power |
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| CN (1) | CN204928784U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720809A (en) * | 2016-03-23 | 2016-06-29 | 施婷婷 | Switching control circuit for single chip microcomputer |
| CN108052047A (en) * | 2018-01-17 | 2018-05-18 | 攀枝花学院 | Microcontroller automatic shutdown circuitry |
| CN109861677A (en) * | 2019-01-21 | 2019-06-07 | 聂奇隆 | A kind of Intelligent Single-Chip Based switching circuit |
-
2015
- 2015-09-16 CN CN201520715694.7U patent/CN204928784U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720809A (en) * | 2016-03-23 | 2016-06-29 | 施婷婷 | Switching control circuit for single chip microcomputer |
| CN108052047A (en) * | 2018-01-17 | 2018-05-18 | 攀枝花学院 | Microcontroller automatic shutdown circuitry |
| CN109861677A (en) * | 2019-01-21 | 2019-06-07 | 聂奇隆 | A kind of Intelligent Single-Chip Based switching circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160916 |