CN206820732U - An a kind of key switch electromechanics road for low-power consumption - Google Patents
An a kind of key switch electromechanics road for low-power consumption Download PDFInfo
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- CN206820732U CN206820732U CN201720266699.5U CN201720266699U CN206820732U CN 206820732 U CN206820732 U CN 206820732U CN 201720266699 U CN201720266699 U CN 201720266699U CN 206820732 U CN206820732 U CN 206820732U
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- nmos tube
- pmos
- key switch
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Abstract
The utility model discloses an a kind of key switch electromechanics road of low-power consumption, it is characterised in that：Including the electronic switching circuit and charge-discharge circuit with power supply connection respectively, for maintaining the conducting holding circuit that electronic switching circuit turns on and the protective circuit of voltage regulation for protecting electronic switching circuit, a key switch is by controlling the charge-discharge circuit to electronic switching circuit described on or off.The utility model not only effectively reduces the phenomenon that electronic equipment causes loss when long-time is standby to battery electric quantity, and substantially increase battery utilizes the time, while solves key jitter and long-press button trip stop technical problem.
Description
Technical field
The utility model belongs to battery powered on/off circuit technical field, and in particular to an a kind of key switch of low-power consumption
Electromechanical road.
Background technology
With electronic equipment especially communication power rectifier module towards high power, low cost and low standby power loss direction send out
How exhibition, effectively reduce power supply power consumption and increasingly attract attention, and many electronic equipments have battery-powered one at present
There is certain power consumption in key switch electromechanics road, a key switch electromechanics road, long-time battery when on standby electricity is easily lost, Wu Faman
Sufficient electronic equipment function standby for a long time, reduces the utilization rate of electronic equipment, many inconvenience, while one is caused to user
There is also the phenomenon of key jitter and long-press button trip stop on key switch electromechanics road.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of low work(
One key switch electromechanics road of consumption, the key switch electromechanics road not only effectively reduce electronic equipment when long-time is standby to battery electricity
Amount causes the phenomenon of loss, and substantially increase battery utilizes the time, while solves key jitter and long-press button trip stop technology
Problem.
In order to solve the above technical problems, the technical solution adopted in the utility model is：An a kind of key switch machine for low-power consumption
Circuit, it is characterised in that：Including the electronic switching circuit being connected respectively with power supply and charge-discharge circuit, for maintaining electronic switch
The conducting holding circuit of circuit turn-on and the protective circuit of voltage regulation for protecting electronic switching circuit, a key switch is by controlling
Charge-discharge circuit is stated to electronic switching circuit described on or off；
The electronic switching circuit is included as the PMOS Q1 of electronic switch, resistance R1, resistance R2 and NMOS tube Q2, institute
The source electrode and drain electrode for stating PMOS Q1 are connected with power input Vin and power output end Vout respectively, the PMOS Q1's
Source electrode is connected through resistance R1, resistance R2 with the drain electrode of the NMOS tube Q2, the grid of the PMOS Q1 and the resistance R1 and
Resistance R2 connection end is connected, the source ground of the NMOS tube Q2, the grid of the NMOS tube Q2 and PMOS Q1 drain electrode
Connection；
The charge-discharge circuit includes the resistance R3 and electric capacity C1 of series connection, resistance R3 one end and resistance R2 and NMOS tube
Connection end is connected, and the electric capacity C1 other ends are connected with the source electrode of the NMOS tube Q2；
One end of the one key switch SW1 is connected with resistance R3 and electric capacity C1 connection end, and the on ＆ off switch SW1's is another
End is connected with the grid of the NMOS tube Q2；
The conducting holding circuit includes diode D1, resistance R4, resistance R5, resistance R6 and electric capacity C2, the diode
D1 positive pole is connected with the drain electrode of the PMOS Q1, and the negative pole of the diode D1 is connected through resistance R4 with resistance R5 one end,
The resistance R5 other ends divide two-way, and the grid with the NMOS tube Q2 is connected all the way, and another way is through resistance R6 and the NMOS
Pipe Q2 source electrode connection, described electric capacity C2 one end are connected with resistance R5 with NMOS tube Q2 grid connection end, and the electric capacity C2 is another
One end is connected with resistance R6 with NMOS tube Q2 source electrode connection end.
The characteristics of the utility model, also resides in：
The protective circuit of voltage regulation includes the reverse voltage-regulator diode ZD1 with the PMOS Q1 source electrodes and gate connected in parallel.
The utility model has advantages below compared with prior art：
1. the utility model circuit is simple, easy to use, when key switch SW1 is connected, electronic switching circuit is on
State, when key switch SW1 disconnects, electronic switching circuit is in cut-off state, so effectively reduces electronic equipment when long
Between it is standby when to battery electric quantity cause loss phenomenon, improve battery utilize the time.
2. key switch SW1 of the present utility model is connected, charge-discharge circuit electric discharge, NMOS tube Q2 conductings, i.e. PMOS
Q1 is turned on immediately, and is turned on holding circuit and maintained PMOS Q1 in the conduction state, so eliminate key jitter and long-press by
The phenomenon of key trip stop.
In summary, the utility model is simple in construction and easy to operate, and input cost is few, reasonable in design, is easy to grasp
Make, using effect is good.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
A kind of one key switch electromechanics road of low-power consumption as shown in Figure 1, including the electronic cutting being connected respectively with power supply are powered-down
Road and charge-discharge circuit, for maintaining conducting holding circuit that electronic switching circuit turns on and for protecting electronic switching circuit
Protective circuit of voltage regulation, key switch SW1 is by controlling the charge-discharge circuit to electronic switching circuit described on or off.
As shown in Fig. 2 the electronic switching circuit include as the PMOS Q1 of electronic switch, resistance R1, resistance R2 and
NMOS tube Q2, the PMOS Q1 source electrode and drain electrode are connected with power input Vin and power output end Vout respectively, described
PMOS Q1 source electrode is connected through resistance R1, resistance R2 with the drain electrode of the NMOS tube Q2, the grid of the PMOS Q1 and institute
The connection end that resistance R1 is stated with resistance R2 is connected, the source ground of the NMOS tube Q2, the grid and PMOS of the NMOS tube Q2
Pipe Q1 drain electrode connection.
As shown in Fig. 2 the charge-discharge circuit includes the resistance R3 and electric capacity C1 of series connection, resistance R3 one end and resistance R2
Connected with the connection end of NMOS tube, the electric capacity C1 other ends are connected with the source electrode of the NMOS tube Q2.
As shown in Fig. 2 one end of the key switch SW1 is connected with resistance R3 and electric capacity C1 connection end, the switch
The key SW1 other end is connected with the grid of the NMOS tube Q2；The conducting holding circuit includes diode D1, resistance R4, electricity
Resistance R5, resistance R6 and electric capacity C2, the positive pole of the diode D1 are connected with the drain electrode of the PMOS Q1, the diode D1's
Negative pole is connected through resistance R4 with resistance R5 one end, and the resistance R5 other ends divide two-way, all the way with the grid of the NMOS tube Q2
Connection, another way are connected through resistance R6 with the source electrode of the NMOS tube Q2, described electric capacity C2 one end and resistance R5 and NMOS tube Q2
Grid connection end be connected, the electric capacity C2 other ends are connected with resistance R6 with NMOS tube Q2 source electrode connection end.
When it is implemented, when key switch SW1 is in the conduction state, the electricity between the source electrode and grid of the PMOS Q1
Pressure difference is zero, i.e. PMOS Q1 is in cut-off state, then a key switch electromechanics road is off state, so effectively prevent electricity
Loss when sub- equipment is standby for a long time to battery electric quantity, the usage time and utilization rate of battery are improved, while this practicality is new
When the key switch SW1 of type is in cut-off state, discharged by charge-discharge circuit, the NMOS tube Q2 conductings, PMOS Q1's
Voltage difference between source electrode and grid increases rapidly, and the PMOS Q1 saturation conductions, power output end Vout voltage value is equal to
Power input Vin magnitudes of voltage, so can effectively solve the phenomenon of key jitter and long-press button trip stop.
In the present embodiment, the protective circuit of voltage regulation includes the reverse voltage stabilizing with the PMOS Q1 source electrodes and gate connected in parallel
Diode ZD1.
Operation principle of the present utility model is：
When key switch SW1 disconnects, power input Vin is charged by resistance R1, resistance R2 and resistance R3 to electric capacity C1,
During being charged to electric capacity C1, the voltage difference between PMOS Q1 source electrode and grid is zero, and PMOS Q1 is in cut-off
State, i.e. the key switch electromechanics road of the utility model one are in cut-off state；When key switch SW1 is connected, in charge-discharge circuit
Electric capacity C1 to NMOS tube Q2 gate charges, and NMOS tube Q2 source ground, such NMOS tube Q2 saturation conductions, PMOS
Q1 drain voltage is equal to power input Vin close to zero, then PMOS Q1 saturation conductions, power output end Vout voltage value
Magnitude of voltage, after PMOS Q1 saturation conductions, conducting holding circuit maintains PMOS Q1 in the conduction state, realizes continuing for battery
Power supply；End key switch SW1 again, close to zero, NMOS tube Q2 is in rapidly electric capacity C1 discharge voltages in charge-discharge circuit
Cut-off state, PMOS Q1 also end immediately, and the key switch electromechanics road of the utility model one is in cut-off state again.
Using a key switch electromechanics road of the utility model as electronic equipment, when electronic equipment is in holding state,
One key switch electromechanics road is in cut-off state, so effectively reduces electronic equipment when long-time is standby to the damage of battery electric quantity
Consumption, can effectively extend life-span of battery, at the same the voltage-regulator diode ZD1 in protective circuit of voltage regulation can prevent PMOS Q1 by
Impacted to spike.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (2)
- An a kind of 1. key switch electromechanics road of low-power consumption, it is characterised in that：Including the electronic switching circuit being connected respectively with power supply With charge-discharge circuit, for maintain electronic switching circuit turn on conducting holding circuit and for protecting the steady of electronic switching circuit Voltage protection circuit, key switch SW1 is by controlling the charge-discharge circuit to electronic switching circuit described on or off；The electronic switching circuit is included as the PMOS Q1 of electronic switch, resistance R1, resistance R2 and NMOS tube Q2, described PMOS Q1 source electrode and drain electrode are connected with power input Vin and power output end Vout respectively, the source of the PMOS Q1 Pole is connected through resistance R1, resistance R2 with the drain electrode of the NMOS tube Q2, the grid of the PMOS Q1 and the resistance R1 and electricity Resistance R2 connection end is connected, and the source ground of the NMOS tube Q2, the grid of the NMOS tube Q2 connects with PMOS Q1 drain electrode Connect；The charge-discharge circuit includes the resistance R3 and electric capacity C1 of series connection, resistance R3 one end and the connection of resistance R2 and NMOS tube End connection, the electric capacity C1 other ends are connected with the source electrode of the NMOS tube Q2；One end of the key switch SW1 is connected with resistance R3 and electric capacity C1 connection end, the other end of the on ＆ off switch SW1 with The grid connection of the NMOS tube Q2；The conducting holding circuit includes diode D1, resistance R4, resistance R5, resistance R6 and electric capacity C2, the diode D1's Positive pole is connected with the drain electrode of the PMOS Q1, and the negative pole of the diode D1 is connected through resistance R4 with resistance R5 one end, described The resistance R5 other ends divide two-way, and the grid with the NMOS tube Q2 is connected all the way, and another way is through resistance R6 and the NMOS tube Q2 Source electrode connection, described electric capacity C2 one end is connected with resistance R5 with NMOS tube Q2 grid connection end, the electric capacity C2 other ends It is connected with resistance R6 with NMOS tube Q2 source electrode connection end.
- An a kind of 2. key switch electromechanics road of low-power consumption according to claim 1, it is characterised in that：The voltage-stabilizing protection electricity Road includes the reverse voltage-regulator diode ZD1 with the PMOS Q1 source electrodes and gate connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720266699.5U CN206820732U (en) | 2017-03-18 | 2017-03-18 | An a kind of key switch electromechanics road for low-power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720266699.5U CN206820732U (en) | 2017-03-18 | 2017-03-18 | An a kind of key switch electromechanics road for low-power consumption |
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| Publication Number | Publication Date |
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| CN206820732U true CN206820732U (en) | 2017-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854811A (en) * | 2018-08-21 | 2020-02-28 | 南京德朔实业有限公司 | Electric tool |
-
2017
- 2017-03-18 CN CN201720266699.5U patent/CN206820732U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854811A (en) * | 2018-08-21 | 2020-02-28 | 南京德朔实业有限公司 | Electric tool |
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