CN201839269U - Electronic switch - Google Patents
Electronic switch Download PDFInfo
- Publication number
- CN201839269U CN201839269U CN2010205692754U CN201020569275U CN201839269U CN 201839269 U CN201839269 U CN 201839269U CN 2010205692754 U CN2010205692754 U CN 2010205692754U CN 201020569275 U CN201020569275 U CN 201020569275U CN 201839269 U CN201839269 U CN 201839269U
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- electronic switch
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Abstract
The utility model discloses an electronic switch, belonging to the field of automatic control. The electronic switch comprises a rectifier circuit, a pressure differential circuit, a switch circuit, a switch control circuit, a function indicating circuit and a control switch. The electronic switch is connected on a power supply line after being connected with various loads in series, and is controlled by the control switch; after being switched to a connecting end by the control switch, the electronic switch can be turned on at any time; and after being switched to a disconnecting end by the control switch, the electronic switch can cut off the supply of power in a delay way.
Description
Technical field
The utility model belongs to automation field, particularly a kind of electronic switch.
Background technology
The electronic switch that has civilian band time-delay closing function now triggers unlatching after mostly being and satisfying certain condition, picks up counting simultaneously, closes automatically after a period of time when switch open, can not open random time.Existing electronic switch has following defective: maybe can not connect inductive load, for example electricity-saving lamp, fluorescent lamp etc.; Or when load is electricity-saving lamp, electricity-saving lamp flicker before switch cuts out; Or adopt non-two-wire system design, special circuit layout need be carried out again and use could be inserted; Or complex structure, manufacturing cost height, be difficult to promote.
The utility model content
In order to solve the problem that prior art exists, the utility model provides a kind of can often drive the also electronic switch of energy time-delay closing, and concrete technical scheme is as follows:
The described electronic switch that can often open and can time-delay closing is and is connected on the supply lines after various loads are connected, control by control switch, control switch can be opened random time after switching to conduction terminal, and control switch switches to the electronic switch that closes delay cutting power supply behind the broken ends of fractured bone; The described electronic switch that can often open and can time-delay closing, lead power supply of introducing by two external-connected ports and the size of controlling the electric current that flows between these two ports; The index signal that the described electronic switch that can often open and can time-delay closing has prompting user delay cutting power supplying functional to start; The described electronic switch that can often open and can time-delay closing has accumulator, provides the base current of keeping its conducting for control switch switches to the switching circuit that closes behind the broken ends of fractured bone; The described electronic switch that can often open and can time-delay closing has amplifying circuit, and it amplifies the electric current that stored energy mechanism provides, and the electric current after order is amplified has the conducting of enough intensity trigger switch circuit; The described electronic switch that can often open and can time-delay closing has before the switching circuit trigger current deficiency from breaking circuit.Above-mentioned accumulator, amplifying circuit, form ON-OFF control circuit of the present utility model from breaking circuit.
The beneficial effects of the utility model are: the utility model is disclosed can often be opened and electronic switch that can time-delay closing has been realized a kind ofly can opening random time, close the electronic switch of back delay cutting power supply, and because the utility model has adopted special time-delay scheme, stand-by power consumption is low, electric current is little during standby, opens, closes rapidly; The two-wire system design need not to carry out again circuit and arranges, can directly substitute mechanical switch and insert use; Can connect inductive load, and load is when being electricity-saving lamp, electricity-saving lamp did not glimmer before switch cut out; Simple in structure, low cost of manufacture is easy to promote.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model embodiment.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, clear,, the utility model is further elaborated below in conjunction with drawings and Examples.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.
As shown in Figure 1, the electronic switch that can often open and can time-delay closing of the present utility model comprises rectification circuit, pressure reduction circuit, switching circuit, ON-OFF control circuit, function indicating circuit and control switch.Wherein, ON-OFF control circuit comprises: accumulator, amplifying circuit and from breaking circuit.The annexation of describing each device below in conjunction with Fig. 1 and Fig. 2 is as follows:
Rectification circuit, its input links to each other with city's electrical network, and its cathode output end connects first end, the positive source input of ON-OFF control circuit and the common port of control switch of pressure reduction circuit, its cathode output end ground connection;
The pressure reduction circuit, its first end connects the positive source input of ON-OFF control circuit and the described common port of control switch, and its second end connects the positive source input of switching circuit and first end of function indicating circuit;
Switching circuit, its positive source input connects described second end of pressure reduction circuit, its earth terminal ground connection, its signal input part connects the output of ON-OFF control circuit;
The function indicating circuit, its first end connects described second end that connects the pressure reduction circuit respectively, and its second end connects the pass broken ends of fractured bone of control switch;
ON-OFF control circuit comprises: accumulator, from breaking circuit and amplifying circuit; First end of accumulator connects the conduction terminal of control switch, its second end ground connection, and its 3rd end connects amplifying circuit and from the 3rd end of breaking circuit; Connect the positive source input of ON-OFF control circuit, its second end ground connection from first end of breaking circuit; First end of amplifying circuit connects the positive source input of ON-OFF control circuit, and its second end connects the described signal input part of switching circuit as the output of ON-OFF control circuit.
Under the control of ON-OFF control circuit, when the common port of control switch is connected with the pass broken ends of fractured bone, by the delay cutting power function on of function indicating circuit indication user's electronic switch; When the described common port of control switch was connected with conduction terminal or has cut off the electricity supply supply, the function indicating circuit quit work.
Various piece to this electronic switch is described in detail below:
Electronic switch of the present utility model inserts city's electrical network by two external-connected ports (input) back of connect with load, after the civil power process rectification circuit that enters this electronic switch carries out rectification, obtains the required direct current of other cell operation of this electronic switch.Wherein, rectification circuit can but be not limited to one of following: full-wave rectifying circuit, half-wave rectifying circuit and rectifier bridge heap.
Main electric current of the present utility model flows in the path of pressure reduction circuit and switching circuit composition.Wherein, the pressure reduction circuit is when electronic switch is opened, its two ends produce stable electrical potential difference, be the power supply of function indicating circuit, also can improve simultaneously the electrical potential difference at accumulator two ends in the ON-OFF control circuit, make accumulator can preserve more electric energy, the potential difference values that this pressure reduction circuit produces is determined by function indicating circuit operating voltage.This pressure reduction circuit can provide the circuit of stable electrical potential difference, for example can be a plurality of rectifier diodes, and these a plurality of rectifier diodes are connected successively; Also can select suitable voltage stabilizing didoe or other that circuit form of stable electrical potential difference can be provided according to the operating voltage of current strength that flows through the pressure reduction circuit and function indicating circuit.
Switching circuit of the present utility model conducting when enough trigger currents are arranged, the trigger current deficiency, then switching circuit is off state.This switching circuit can be realized by one-way SCR, also can be devices such as triode, field effect transistor or relay.For example, when this switching circuit is when being realized by one-way SCR, its control utmost point connects the ON-OFF control circuit signal output part as signal input part, its positive source input this pressure reduction circuit of termination and this function indicating circuit, its earth terminal ground connection.
Function indicating circuit of the present utility model comprises resistance and light-emitting diode, and this resistance is connected with light-emitting diode, except using up to the user sends information, can also adopt any can realization to the form that the client gives a warning.The positive pole of this light-emitting diode is as the pass broken ends of fractured bone of the second termination control switch of function indicating circuit, and negative pole connects the positive source input of pressure reduction circuit second end and switching circuit by resistance as first end of function indicating circuit.This function indicating circuit the common port of control switch with close the broken ends of fractured bone when being connected, promptly start working during the delay cutting power function on, inform that this electronic switch of user delay cutting power function starts, switch is about to shutoff; When the common port of control switch is connected with conduction terminal, when electronic switch is in normally open, or when having cut off the electricity supply supply, the function indicating circuit is not worked.
Introduce ON-OFF control circuit of the present utility model below, this circuit comprises: accumulator, amplifying circuit and from breaking circuit.
Wherein, accumulator comprises: resistance, Schottky diode and electric capacity, resistance, Schottky diode and electric capacity are connected successively.The positive pole of Schottky diode links to each other with the conduction terminal of control switch by resistance, and negative pole is respectively with amplifying circuit, link to each other the minus earth of electric capacity from the positive pole of breaking circuit and electric capacity.Accumulator is electric energy supplement when control switch switches to conduction terminal, provides base current to amplifying circuit simultaneously.
Wherein, amplifying circuit comprises NPN type triode and two current-limiting resistances, the collector electrode of triode connects the positive source input of ON-OFF control circuit by a current-limiting resistance, base stage also connects the positive pole of the electric capacity in the accumulator by another current-limiting resistance, launch the very signal output part of ON-OFF control circuit output switch circuit control signal, extremely link to each other with the control of one-way SCR in the switching circuit, this controls the very signal input part of switching circuit.After amplifying, the base current that amplifying circuit can be sent accumulator here outputs to switching circuit;
Wherein, comprise NPN type triode, current-limiting resistance and voltage stabilizing didoe from breaking circuit, the collector electrode of triode connects the positive pole as the electric capacity of accumulator, grounded emitter, and base stage is connected the positive source input of ON-OFF control circuit with voltage stabilizing didoe by current-limiting resistance.From breaking circuit before switching circuit turn-offs, the direct voltage of rectification circuit output starts when being elevated to certain numerical value, accumulator is discharged rapidly, then amplifying circuit loses base current, cause the trigger current near-zero that outputs to switching circuit, therefore switching circuit turn-offs rapidly, solves electronic switch and turn-offs preceding increasing problem of the conducting time interval.Above-mentioned " direct voltage of rectification circuit output is elevated to certain numerical value, and under the identical situation of accumulator, this numerical value is big more, the slow more shutoff of switching circuit, and the conducting time interval was big more before electronic switch turn-offed; This numerical value is more little, and switching circuit more early turn-offs, and the conducting time interval was more little before electronic switch turn-offed.Can corresponding numerical value be set according to concrete application scenario.
Fig. 2 is the physical circuit schematic diagram of an embodiment of the utility model, and each several part is described below:
Pressure reduction circuit 2 is composed in series by rectifier diode D1, D2, D3, D4, connected mode such as Fig. 2 also can select suitable voltage stabilizing didoe or other that circuit form of stable electrical potential difference can be provided according to the operating voltage of current strength that flows through pressure reduction circuit 2 and function indicating circuit.
Switching circuit 4 is realized by unidirectional controllable silicon S CR1, connected mode such as Fig. 2.
Function indicating circuit 3 is made up of resistance R 1, light-emitting diode DS1, connected mode such as Fig. 2.Wherein, light-emitting diode DS1 can be the white hair green light LED of diameter 3mm, because of its operating voltage is 1.9V～2.0V, so pressure reduction circuit 2 adopts the rectifier diode of 4 series connection to form.This function indicating circuit 3 can also adopt any can realization to the form that the client gives a warning except using up to the user sends information.
ON-OFF control circuit 5 is made up of capacitor C 1, Schottky diode D9, voltage stabilizing didoe ZD1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, triode Q1, triode Q2, connected mode such as Fig. 2.Wherein, resistance R 3, resistance R 4, triode Q1 form amplifying circuit 6; Voltage stabilizing didoe ZD1, resistance R 5, triode Q2 form from breaking circuit 7; Capacitor C 1, resistance R 2, Schottky diode D9 form accumulator 8.
The control that electronic switch switches between normal unlatching and two kinds of operating states of delay cutting power supply is realized by control switch S1.When 1 group of switch S to " ON ", the electric current of the one-way passage that the resistance R 2 by accumulator 8 front ends, Schottky diode D9 form will be capacitor C 1 charging, provide base current for amplifying circuit 6 simultaneously, base current is amplified metapedes with the one-way SCR in the trigger switch circuit 4, so switching circuit 4 conductings through this amplifying circuit 7.When control switch S1 dials to " OFF ", then provide base current to keep switching circuit 4 conductings for amplifying circuit 6 by capacitor C 1, after electronic switch delay cutting power supplying functional starts, 4 work of function indicating circuit, light-emitting diode DS1 lights; Release along with capacitor C 1 electric energy, accumulator 8 will be more and more littler for the base current that amplifying circuit 6 provides, rectification circuit 1 both positive and negative polarity output electrical potential difference raises, when surpassing voltage stabilizing didoe ZD1 reverse breakdown voltage, start from breaking circuit 7 in the ON-OFF control circuit 5, to accumulator 8 discharges, switching circuit 4 turn-offs rapidly rapidly, electronic switch turn-offs, and enters holding state.
The utility model standby current is minimum, is both leakage currents of triode Q1, unidirectional controllable silicon S CR1 and triode Q2 base current sum.When voltage stabilizing didoe ZD1 reverse breakdown voltage is 20V, resistance R 5 is 50M Ω, and when the line voltage peak value was 312V, triode Q2 base current peak value was (312V-20V)/50M Ω ≈ 5.8 μ A.
The beneficial effects of the utility model are: the utility model is disclosed can often be opened and electronic switch that can time-delay closing has been realized a kind ofly can opening random time, close the electronic switch of back delay cutting power supply, and because the utility model has adopted special time-delay scheme, stand-by power consumption is low, electric current is little during standby, opens, closes rapidly; The two-wire system design need not to carry out again circuit and arranges, can directly substitute mechanical switch and insert use; Can connect inductive load, and load is when being electricity-saving lamp, electricity-saving lamp did not glimmer before switch cut out; Simple in structure, low cost of manufacture is easy to promote.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present utility model, but as previously mentioned, be to be understood that the utility model is not limited to the disclosed form of this paper, should not regard eliminating as to other embodiment, and can be used for various other combinations, modification and environment, and can in utility model contemplated scope described herein, change by the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from spirit and scope of the present utility model, then all should be in the protection range of the appended claim of the utility model.
Claims (10)
1. an electronic switch is characterized in that, comprising:
Rectification circuit, its input links to each other with city's electrical network, and its cathode output end connects first end, the positive source input of ON-OFF control circuit and the common port of control switch of pressure reduction circuit, its cathode output end ground connection;
Described pressure reduction circuit, its described first end connects the described positive source input of described ON-OFF control circuit and the described common port of control switch, and its second end connects the positive source input of switching circuit and first end of function indicating circuit;
Described switching circuit, its described positive source input connects described second end of described pressure reduction circuit, its earth terminal ground connection, its signal input part connects the signal output part of described ON-OFF control circuit;
Described function indicating circuit, its described first end connects and connects described second end of described pressure reduction circuit and the positive source input of described switching circuit respectively, and its second end connects the pass broken ends of fractured bone of described control switch;
Described ON-OFF control circuit comprises: accumulator, from breaking circuit and amplifying circuit; First end of described accumulator connects the conduction terminal of described control switch, its second end ground connection, and its 3rd end connects described amplifying circuit and from the 3rd end of breaking circuit; Described first end from breaking circuit connects the positive source input of described ON-OFF control circuit, its second end ground connection; First end of described amplifying circuit connects the positive source input of described ON-OFF control circuit, and its second end connects the described signal input part of described switching circuit as described signal output part.
2. electronic switch as claimed in claim 1, it is characterized in that, under the control of described ON-OFF control circuit, when the described common port of described control switch is connected with the described pass broken ends of fractured bone, by the delay cutting power function on of the described electronic switch of described function indicating circuit indication user; When the described common port of described control switch was connected with described conduction terminal or has cut off the electricity supply supply, described function indicating circuit quit work.
3. electronic switch according to claim 1 is characterized in that described rectification circuit comprises: full-wave rectifying circuit, half-wave rectifying circuit and rectifier bridge heap.
4. electronic switch according to claim 1 is characterized in that described switching circuit comprises: one-way SCR, triode, field effect transistor or relay.
5. electronic switch according to claim 1 is characterized in that described pressure reduction circuit is for providing the circuit of stable electrical potential difference.
6. as electronic switch as described in the claim 5, it is characterized in that the described circuit of stable electrical potential difference that can provide comprises: a plurality of diode in series successively; Or voltage stabilizing didoe.
7. electronic switch according to claim 1, it is characterized in that, described function indicating circuit comprises: resistance and light-emitting diode, described resistance is connected with described light-emitting diode, the positive pole of described light-emitting diode is as the pass broken ends of fractured bone of the described control switch of second termination of described function indicating circuit, and negative pole connects described pressure reduction circuit and described switching circuit as first end of described function indicating circuit by described resistance.
8. electronic switch according to claim 1, it is characterized in that, described accumulator comprises: resistance, Schottky diode and electric capacity, described resistance, described Schottky diode and described electric capacity are connected successively, wherein, the positive pole of described Schottky diode links to each other with the conduction terminal of described control switch by described resistance, and negative pole links to each other the minus earth of described electric capacity with described amplifying circuit, described positive pole from breaking circuit and described electric capacity respectively.
9. electronic switch according to claim 1, it is characterized in that, described amplifying circuit comprises: NPN type triode, first current-limiting resistance and second current-limiting resistance, the collector electrode of described NPN type triode connects the positive source input and described described first end from breaking circuit of described ON-OFF control circuit by first current-limiting resistance, base stage connects described accumulator and described the 3rd end from breaking circuit by second current-limiting resistance, the signal output part of the very described ON-OFF control circuit of emission links to each other with the signal input part of described switching circuit.
10. electronic switch according to claim 1, it is characterized in that, describedly comprise NPN type triode, current-limiting resistance and voltage stabilizing didoe from breaking circuit, the collector electrode of described NPN triode connects described the 3rd end of described accumulator, emitter is as described earth terminal ground connection, and base stage is connected the positive source input and the described amplifying circuit of described ON-OFF control circuit with voltage stabilizing didoe by current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205692754U CN201839269U (en) | 2010-10-21 | 2010-10-21 | Electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205692754U CN201839269U (en) | 2010-10-21 | 2010-10-21 | Electronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201839269U true CN201839269U (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205692754U Expired - Fee Related CN201839269U (en) | 2010-10-21 | 2010-10-21 | Electronic switch |
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| Country | Link |
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| CN (1) | CN201839269U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566462A (en) * | 2012-01-16 | 2012-07-11 | 西蒙电气（中国）有限公司 | Three-wire electronic switch |
| CN104570799A (en) * | 2014-12-19 | 2015-04-29 | 湖南水口山有色金属集团有限公司 | Silicon controlled rectifier control circuit and system |
| CN108777572A (en) * | 2018-05-28 | 2018-11-09 | 四川斐讯信息技术有限公司 | A kind of semiconductor tube protective circuit and method |
| CN111174390A (en) * | 2020-02-17 | 2020-05-19 | 珠海格力电器股份有限公司 | Power taking circuit, wire controller, air conditioner and resistance control method |
-
2010
- 2010-10-21 CN CN2010205692754U patent/CN201839269U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566462A (en) * | 2012-01-16 | 2012-07-11 | 西蒙电气（中国）有限公司 | Three-wire electronic switch |
| CN104570799A (en) * | 2014-12-19 | 2015-04-29 | 湖南水口山有色金属集团有限公司 | Silicon controlled rectifier control circuit and system |
| CN104570799B (en) * | 2014-12-19 | 2017-05-03 | 湖南水口山有色金属集团有限公司 | Silicon controlled rectifier control circuit and system |
| CN108777572A (en) * | 2018-05-28 | 2018-11-09 | 四川斐讯信息技术有限公司 | A kind of semiconductor tube protective circuit and method |
| CN111174390A (en) * | 2020-02-17 | 2020-05-19 | 珠海格力电器股份有限公司 | Power taking circuit, wire controller, air conditioner and resistance control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20111021 |