CN201467088U - Time delay switch - Google Patents
Time delay switch Download PDFInfo
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- CN201467088U CN201467088U CN2009200444079U CN200920044407U CN201467088U CN 201467088 U CN201467088 U CN 201467088U CN 2009200444079 U CN2009200444079 U CN 2009200444079U CN 200920044407 U CN200920044407 U CN 200920044407U CN 201467088 U CN201467088 U CN 201467088U
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Abstract
The utility model relates to a time delay switch which is characterized by comprising a rectifying circuit, an electricity getting circuit, a control circuit, a switch circuit and a trigger device, wherein the rectifying circuit, the electricity getting circuit and the switch circuit are sequentially connected in series to form a loop; the power end (a) of the control circuit is connected with the output voltage end (Vout) of the electricity getting circuit; the grounding end (b) of the control circuit is connected with the grounding end (GND) of the electricity getting circuit; the output end (c) of the control circuit is connected with the control end of the switch circuit; the trigger device is connected in the time delay switch circuit; and the AC input end of the rectifying circuit is connected with the connecting terminal of the time delay switch. The utility model has simple structure and wide application; and the load can be filament lamps, energy saving lamps and the like. The time delay switch can directly replace the traditional common single-wire switches so as to get rid of depending on the filament lamps.
Description
Technical field
The utility model belongs to the electronic circuit technology field, specifically is the one wire system delay switch that can do load in one with electricity-saving lamp etc.
Background technology
In the prior art, the supply power mode that the one wire system delay switch is taked is to be mostly electric resistance partial pressure (as Fig. 1), divider resistance and control circuit also are connected in the main circuit, but when controllable silicon turn-offs, still have electric current to flow through on the divider resistance, flicker can occur after electricity-saving lamp connects, incandescent lamp connects power consumption always.The delay switch (as Fig. 2) that is exclusively used in electricity-saving lamp is also arranged in the prior art,, give the electronic switch control signal, when wiring, need to draw a zero line for delay switch separately by delay control circuit because this kind switch is a three-wire system.
Summary of the invention
The utility model is intended to overcome the above-mentioned defective of existing in prior technology, propose a kind of can be more energy-conservation and be applicable to a line system delay switch of electricity-saving lamp and other similar loads, concrete technical scheme is as follows:
A kind of delay switch is characterized in that described delay switch comprises rectification circuit, power-supply circuit, control circuit, switching circuit and trigger device; Rectification circuit, power-supply circuit and switching circuit are followed in series to form the loop; Control circuit power end a accesses the output voltage terminal Vout of circuit, and control circuit earth terminal b accesses the earth terminal GND of circuit; The output c of control circuit connects the control end of switching circuit; Trigger device is connected in the described delay switch circuit; The ac input end of described rectification circuit connects the binding post of delay switch, is used for load circuit is received in the series connection of this delay switch.
For power-supply circuit:
As improving 1: described power-supply circuit comprises voltage-stabiliser tube; The negative electrode of voltage-stabiliser tube is the Input voltage terminal Vin of power-supply circuit, is connected "+" utmost point of rectification circuit; The anode of voltage-stabiliser tube is the earth terminal GND of power-supply circuit.
As improving 2: described power-supply circuit comprises resistance; One end of resistance is the Input voltage terminal Vin of power-supply circuit, is connected "+" utmost point of rectification circuit; The other end of resistance is the earth terminal GND of power-supply circuit.
Described power-supply circuit also comprises electric capacity and diode; The anode of diode is connected the Input voltage terminal Vin of power-supply circuit; Electric capacity "+" utmost point connects the negative electrode of diode, i.e. the output voltage terminal Vout of power-supply circuit; "-" utmost point of electric capacity is connected the earth terminal GND of power-supply circuit.Play the energy storage filter action.
For switching circuit:
Described switching circuit comprises switching tube; Control end of switching tube connects the output c of control circuit; The current input terminal of switching tube is the current input terminal of switching circuit, connects the earth terminal GND of described power-supply circuit; The current output terminal of switching tube is the output of switching circuit, connects "-" utmost point of rectification circuit; Be parallel with touch-switch as mechanical activator spare between the electric current input and output side of switching tube.
Described switching tube comprises triode, MOSFET pipe, controllable silicon and other circuit with gate-controlled switch function.
As improving 2: switching circuit comprises high press polish idol; The control end of high press polish idol is connected between the output c and earth terminal GND of control circuit; The current input terminal of high press polish idol is the input of switching circuit, connects the output of described power-supply circuit; The current output terminal of high press polish idol is the output of switching circuit, connects "-" utmost point of rectification circuit; Be parallel with touch-switch as mechanical activator spare between the electric current input and output side of high press polish idol.
As improving 3: described switching circuit comprises relay; The control end of relay connects between the output c and earth terminal GND of control circuit; The current input terminal of relay is the input of switching circuit, connects the output of described power-supply circuit; The current output terminal of relay is the output of switching circuit, connects rectification circuit "-" utmost point; Be parallel with touch-switch as mechanical activator spare between the electric current input and output side of relay.
For control circuit:
The output of described control circuit connects the control end of control switch circuit by drive circuit; The output of described control delay circuit also is connected with metal and touches sheet as trigger device.Control circuit comprises that 555 delay circuits, CD4011 delay circuit or other have the delay circuit of identical or similar functions.
The operation principle of this delay switch is as follows:
1, for touch-switch, after the touch-switch closure, rectification circuit converts the alternating current in the civil power ac circuit to direct current; Produce pressure drop on the power-supply circuit, the formation major loop of rectification circuit, power-supply circuit and closure state trigger device, this delay switch is in conducting state.
After touch-switch disconnected, because the time-lag action of delay circuit, the output of delay circuit made switching circuit be in conducting state, and the switching circuit of rectification circuit, power-supply circuit and conducting state constitutes major loop at this moment.After the delay circuit time-delay finishes, make switching circuit be in off-state, this delay switch is in off-state.
2, touch sheet for metal, during touch action, the spuious electric charge of human body touches sheet by metal makes the control end of switching circuit produce voltage dithering, and switching circuit is in conducting state, and the switching circuit of rectification circuit, power-supply circuit and conducting state constitutes major loop at this moment.After touch action finished, because the time-lag action of delay circuit, the output of delay circuit made switching circuit be in conducting state.After the delay circuit time-delay finishes, make switching circuit be in off-state, this delay switch is in off-state.
Above-mentioned two kinds of trigger devices also can common application in same delay switch.
The utility model is simple in structure, and is of many uses, and load can be incandescent lamp, electricity-saving lamp etc., can directly replace existing common single-line switch, breaks away from the dependence to incandescent lamp.
Description of drawings
Fig. 1 is the theory diagram of one wire system delay switch in the prior art;
Fig. 2 is the theory diagram of three-wire system delay switch in the prior art, and A, C are zero line among the figure, and B is a live wire;
Fig. 3 is the theory diagram of this delay switch;
Fig. 4 is the electrical schematic diagram of the delay switch of embodiment 1;
Fig. 5 is the electrical schematic diagram of the delay switch of embodiment 2;
Fig. 6 is a resistance for power-supply circuit, and switching circuit is the electrical schematic diagram of silicon controlled delay switch;
Fig. 7 is a resistance for power-supply circuit, and switching circuit is the electrical schematic diagram of the delay switch of MOSFET pipe.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
A kind of delay switch, described delay switch comprises rectification circuit, power-supply circuit, control circuit, switching circuit and trigger device; Rectification circuit, power-supply circuit and switching circuit are followed in series to form the loop; Control circuit power end a accesses the output voltage terminal Vout of circuit, and control circuit earth terminal b accesses the earth terminal GND of circuit; The output c of control circuit connects the control end of switching circuit, gives its control signal; Trigger device is connected in the described delay switch circuit; The ac input end of described rectification circuit connects the binding post of delay switch, is used for load circuit is received in the series connection of this delay switch.
In the example 1,2, power-supply circuit comprises voltage-stabiliser tube D6, capacitor C 4 and diode D1."+" utmost point of described capacitor C 4 connects direct current output "+" utmost point of described rectification circuit by diode D1; The anode of described diode D1 connects direct current output "+" utmost point, and the negative electrode of diode D1 connects "+" utmost point of electric capacity.Power-supply circuit also comprises voltage-stabiliser tube D6, and the negative electrode of voltage-stabiliser tube D6 connects the anode of described diode D1, and the anode of voltage-stabiliser tube D6 connects "-" utmost point of described capacitor C 4.
The output of described control circuit also connects triode Q2 and makes drive circuit; Delay circuit connects "+", "-" utmost point of described capacitor C 4; Control end of switching tube connects the output of delay circuit; The current output terminal of switching tube is the output of control circuit, connects described switching circuit control end.
Trigger device is selected touch-switch S1 for use and is touched the circuit of sheet E1 based on metal.Metal touches sheet E1 connects described switching tube Q2 by resistance R 3 control end (base stage).
Described control circuit is 555 delay circuits, and the power end of 555 delay circuits connects capacitor C 4 "+" utmost point of described power-supply circuit, and the earth terminal of 555 delay circuits connects described capacitor C 4 "-" utmost point; The control end of switching tube Q2 connects the output of 555 delay circuits.
Example 1, with reference to the accompanying drawings 4:
Described switching circuit is to be the circuit of core with MOSFET; The output of described drive circuit Q1 connects the grid of MOSFET, and the source electrode of MOSFET connects direct current "-" utmost point of rectification circuit, and the drain electrode of MOSFET connects the anode of voltage-stabiliser tube D6; Described touch-switch S1 be connected in parallel drain electrode and the source electrode of MOSFET; The grid of described MOSFET and the source electrode Transient Suppression Diode TR1 that also is connected in parallel protects.
In the power-supply circuit, D6 produces pressure drop, is the control circuit power supply of back by diode D1, and the effect of capacitor C 4 is energy storage filtering.Q2 is positive-negative-positive triode Q2 in this example, and in the time of being implemented in the switching circuit disconnection, Q2 ends, and the output loop of rectification circuit is ended fully.
In this example, ac input end J1, the J2 of rectification circuit links to each other with load with live wire respectively.
Rectification circuit is the bridge rectifier that diode D2, D3, D4 and D5 form, and output cathode accesses circuit, and negative pole connects switching circuit, and two ends link to each other with binding post in addition.Power-supply circuit is used for providing power supply to control circuit.
Control circuit is used for the break-make of control switch circuit, is made of delay circuit and switching tube and touch signal unit: chip U1, the i.e. delay unit formed of NE555, resistance R 1, R4, capacitor C 1, C2, C3; Resistance R 6, R7, R2, R5, triode Q1, Q2 form driver element; Resistance R 3, metal touch sheet E1 and form the touch signal unit, are to use under the touch mode.
Switching circuit is made up of resistance R 8, R9, Transient Suppression Diode TR1, N channel enhancement field pipe Q3, mechanical switch S1, and S1 uses under mechanical trigger mode.
Operation principle: when Q3 was cut-off state, the electromotive force that D6 can not two ends was 0, and the base stage level of Q2 is identical with emitter, and Q2 ends, so all current circuits all are in cut-off state.
In this example, the process of delay switch is as follows:
When pressing mechanical switch S1, S1, D6 are connected on and have constituted loop → D6 in the rectification circuit and produce pressure drop → control circuit and get electric → time-delay timing and begin and Q2 conducting → Q3 conducting, so switching circuit, power-supply circuit, control circuit interlocking, the loop keeps conducting state; Delay time arrives, NE555 output low level → Q1 by → Q2 by → Q3 grid potential by the rapid step-down → Q3 of R9 by → loop by fully by the → last no pressure drop of D6, the electromotive force of C4 reduces gradually, because NE555 is output as low level characteristic when supply voltage is lower than rated voltage, so, before triggering next time, Q2 is the remain off state.
Or, as hand contact metal film E1, the spuious electric charge of human body makes output high pressure process Q2, R8, the R9 dividing potential drop of base voltage shake → Q2 conducting → rectification circuit of Q2 by R3, and by Transient Suppression Diode TR1 pressure limiting, be added on the grid of Q3, make the Q3 conducting, Q3, D6 are connected on and have constituted loop → D6 in the rectification circuit and produce pressure drop, and the back principle is the same.
Example 2, as Fig. 5:
Described switching circuit can also be to be the circuit of core with controllable silicon Q0, contrast accompanying drawing 5, and its structure is that the positive pole of rectifier bridge links to each other with the negative electrode of voltage-stabiliser tube D6, and the anode of voltage-stabiliser tube D6 connects the anode of controllable silicon Q0, and the negative electrode of controllable silicon Q0 connects the negative pole of rectifier bridge; The anode of diode D1 connects the negative electrode of voltage-stabiliser tube D6, and negative electrode connects the positive pole of capacitor C 4, and the negative pole of capacitor C 4 connects the anode of voltage-stabiliser tube D6; The emitter of transistor Q2 connects the positive pole of capacitor C 4, the output OUT of the base stage connection control circuit of transistor Q0, and the positive pole of C4 and negative pole are respectively control circuit electric power loop are provided.Resistance R connects the collector electrode of transistor Q2 and the gate pole of controllable silicon Q0; Touch manner triggers: the base stage of a termination transistor Q2 of resistance R 3, and sheet E1 is touched in other end contact; Mechanical system triggers: trigger switch S1 in parallel between the anode of controllable silicon Q0 and negative electrode.
When selecting for use touch manner to trigger, human body drags down the base stage level of PNP transistor Q2 at (emitter relatively) by resistance R 3, PNP transistor Q2 conducting, make controllable silicon Q0 conducting, so voltage-stabiliser tube D6 goes up the formation pressure drop and powers to control circuit, control circuit powers on and then immediately output OUT is put low (emitter relatively), keep transistor Q0 conducting, behind the delay time T, delay circuit is put height (emitter relatively) with output OUT, and transistor Q2 turn-offs, and controllable silicon Q0 turn-offs, pressure drop is 0 on the voltage-stabiliser tube, and switch disconnects fully.
When selecting mechanical triggering mode for use, press trigger switch S1, make anode, the negative electrode short circuit of controllable silicon Q0, so voltage-stabiliser tube D6 goes up the formation pressure drop and powers to control circuit, control circuit powers on and then immediately output OUT is put low (emitter relatively), keeps transistor Q0 conducting, enters timing, delay time arrives, delay circuit is put height (emitter relatively) with output OUT, and transistor turn-offs, and controllable silicon Q0 turn-offs, pressure drop is 0 on the voltage-stabiliser tube, and switch disconnects fully.
In this example, control circuit can be selected 555 identical in the example 1 delay circuits for use.
Shown in Fig. 6,7, power-supply circuit can also be selected resistance R 1 for use; For circuit shown in Figure 6, to compare with example 2 circuit, the identical circuit with example 2 respectively of other circuit is identical; For circuit shown in Figure 7, to compare with Fig. 6 circuit road, difference is that the controllable silicon Q0 of switching circuit changes MOSFET pipe Q3 into.Identical with example 1 with the circuit of example 2, power-supply circuit resistance R1, but the integrated circuit principle is identical, so just do not further illustrate.Herein, the selection of resistance R 1 is subjected to load effect bigger.
Switching circuit can be selected other circuit with gate-controlled switch function for use, for example selects high press polish idol, relay for use.Selecting for use high press polish occasionally during relay, adopt the stronger drive circuit of driving force, and metal touches the control end that sheet must be connected on drive circuit.In the example 1,2, owing to select MOSFET pipe and controllable silicon Q0 for use, so drive circuit is selected triode Q2 for use.
Control circuit can select for use 555 delay circuits, CD4011 delay circuit or other to have the delay circuit of identical or similar functions.Consider that 555 delay circuits are simple, ripe, price is lower, is example with 555 delay circuits in the example 1,2.
Claims (10)
1. a delay switch is characterized in that described delay switch comprises rectification circuit, power-supply circuit, control circuit, switching circuit and trigger device; Rectification circuit, power-supply circuit and switching circuit are followed in series to form the loop; Control circuit power end (a) accesses the output voltage terminal (Vout) of circuit, and control circuit earth terminal (b) accesses the earth terminal (GND) of circuit; The output of control circuit (c) connects the control end of switching circuit; Trigger device is connected in the described delay switch circuit; The ac input end of described rectification circuit connects the binding post of delay switch.
2. delay switch according to claim 1 is characterized in that described power-supply circuit comprises voltage-stabiliser tube; The negative electrode of voltage-stabiliser tube is the Input voltage terminal (Vin) of power-supply circuit, is connected "+" utmost point of rectification circuit; The anode of voltage-stabiliser tube is the earth terminal (GND) of power-supply circuit.
3. delay switch according to claim 1 is characterized in that described power-supply circuit comprises resistance; One end of resistance is the Input voltage terminal (Vin) of power-supply circuit, is connected "+" utmost point of rectification circuit; The other end of resistance is the earth terminal (GND) of power-supply circuit.
4. according to claim 2 or 3 described delay switchs, it is characterized in that described power-supply circuit also comprises electric capacity and diode; The anode of diode is connected the Input voltage terminal (Vin) of power-supply circuit; Electric capacity "+" utmost point connects the negative electrode of diode, the i.e. output voltage terminal of power-supply circuit (Vout); "-" utmost point of electric capacity is connected the earth terminal (GND) of power-supply circuit.
5. delay switch according to claim 1 is characterized in that described switching circuit comprises switching tube; Control end of switching tube connects the output (c) of control circuit; The current input terminal of switching tube is the current input terminal of switching circuit, connects the earth terminal (GND) of described power-supply circuit; The current output terminal of switching tube is the output of switching circuit, connects "-" utmost point of rectification circuit; Be parallel with touch-switch as mechanical activator spare between the electric current input and output side of switching tube.
6. delay switch according to claim 5 is characterized in that described switching tube comprises triode, MOSFET pipe, controllable silicon.
7. delay switch according to claim 1 is characterized in that described switching circuit comprises high press polish idol; The control end of high press polish idol is connected between the output (c) and earth terminal (GND) of control circuit; The current input terminal of high press polish idol is the input of switching circuit, connects the output of described power-supply circuit; The current output terminal of high press polish idol is the output of switching circuit, connects "-" utmost point of rectification circuit; Be parallel with touch-switch as mechanical activator spare between the electric current input and output side of high press polish idol.
8. delay switch according to claim 1 is characterized in that described switching circuit comprises relay; The control end of relay connects between the output (c) and earth terminal (GND) of control circuit; The current input terminal of relay is the input of switching circuit, connects the output of described power-supply circuit; The current output terminal of relay is the output of switching circuit, connects rectification circuit "-" utmost point; Be parallel with touch-switch as mechanical activator spare between the electric current input and output side of relay.
9. delay switch according to claim 1 is characterized in that the output of described control circuit connects the control end of control switch circuit by drive circuit; The output of described control delay circuit also is connected with metal and touches sheet as trigger device.
10. delay switch according to claim 9 is characterized in that described control circuit comprises 555 delay circuits or CD4011 delay circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200444079U CN201467088U (en) | 2009-06-08 | 2009-06-08 | Time delay switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200444079U CN201467088U (en) | 2009-06-08 | 2009-06-08 | Time delay switch |
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| Publication Number | Publication Date |
|---|---|
| CN201467088U true CN201467088U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200444079U Expired - Fee Related CN201467088U (en) | 2009-06-08 | 2009-06-08 | Time delay switch |
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| Country | Link |
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| CN (1) | CN201467088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391562A (en) * | 2014-10-17 | 2015-03-04 | 南京熊猫电子股份有限公司 | Self-starting interference-free circuit for positioning modules of intelligent terminals |
-
2009
- 2009-06-08 CN CN2009200444079U patent/CN201467088U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391562A (en) * | 2014-10-17 | 2015-03-04 | 南京熊猫电子股份有限公司 | Self-starting interference-free circuit for positioning modules of intelligent terminals |
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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 |
Granted publication date: 20100512 Termination date: 20150608 |
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| EXPY | Termination of patent right or utility model |