CN110350899A - Noncontacting switch - Google Patents
Noncontacting switch Download PDFInfo
- Publication number
- CN110350899A CN110350899A CN201910735455.0A CN201910735455A CN110350899A CN 110350899 A CN110350899 A CN 110350899A CN 201910735455 A CN201910735455 A CN 201910735455A CN 110350899 A CN110350899 A CN 110350899A
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- Prior art keywords
- circuit
- switch
- output end
- semiconductor switch
- power
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- 239000004065 semiconductor Substances 0.000 claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 12
- 230000011664 signaling Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 3
- 238000010892 electric spark Methods 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 abstract description 2
- 231100001261 hazardous Toxicity 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000005669 field effect Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
Abstract
The present invention relates to a kind of noncontacting switches, it includes rectification circuit, semiconductor switch circuit, driving circuit, switch detection circuit and power-supply circuit, the DC output end and semiconductor switch circuit of rectification circuit are electrically connected, semiconductor switch circuit is also electrically connected with driving circuit, driving circuit is also electrically connected with switch detection circuit, and power-supply circuit is powered to switch detection circuit；The AC terminal of rectification circuit is ac input end and ac output end, and when switch detection circuit detects that its switch on and off state changes, control driving circuit changes the corresponding on off operating mode of semiconductor switch circuit, to control the on-off of ac output end.The present invention controls during load power on/off, the contact of the physical properties such as no mechanical contact contacts or separation, therefore the physical phenomenons such as electric arc or electric spark will not be generated, switch is set to can be used for there may be in the environment of flammable explosive gas, so that the life safety or physical security in certain hazardous environments have better guarantee.
Description
Technical field
The present invention relates to a kind of Sparkless switch, especially a kind of noncontacting switch.
Background technique
Switch is electric product indispensable in daily life, and the various peaces related with switch that happen occasionally in actual life
Full accident.If gas leak accidentally occurs for shelter, personnel turn on the switch in undefended situation, are possible to occur at this time
Coal gas detonation.Such as when coal mine may be full of gas inflammable gas, if mechanical switch because caused by senile cause opening or
Electric arc or electric spark are generated when closing, then can generate the serious consequence of huge explosion.In order to reduce these safety accidents, need to improve
The security performance of switch, it is therefore desirable to research and develop the strong noncontacting switch technology of stability.
China Patent Publication No. is Sparkless switch disclosed in CN97104328, is to switch to mechanical contact-type and partly lead
The combination that body noncontacting switch reapective features are learnt from other's strong points to offset one's weaknesses.Two kinds of switches are merged into a single whole, the time difference acted using the two,
The shortcomings that overcoming mechanical switch contact to strike sparks with the advantages of semiconductor switch no-spark electric discharge, while with the conducting of mechanical switch contact
Strong point of the pressure drop close to zero makes up that semiconductor switch conducts pressure drop is big, the high weakness of junction temperature.Disadvantage is that test table
Bright, such switch works under rated current, and within 105 service life, flashing does not discharge for 95% or more movement, and 5%
Extremely slight spark discharge only occurs for movement below, therefore still has some potential safety problems.
Summary of the invention
It is switching process no-spark, safe and reliable contactless the purpose of the present invention is to provide a kind of structurally reasonable
Switch.
The object of the present invention is achieved like this:
A kind of noncontacting switch, it is characterised in that: including rectification circuit, semiconductor switch circuit, driving circuit, switch detection electricity
Road and power-supply circuit, the DC output end of rectification circuit and semiconductor switch circuit are electrically connected, semiconductor switch circuit also with
Driving circuit is electrically connected, and driving circuit is also electrically connected with switch detection circuit, and power-supply circuit is powered to switch detection circuit；
The AC terminal of rectification circuit is ac input end and ac output end, and switch detection circuit detects its switch on and off state
When change, control driving circuit changes the corresponding on off operating mode of semiconductor switch circuit, to control the on-off of ac output end.
The purpose of the present invention can also be solved using following technical measures:
As more specific scheme, the semiconductor switch circuit is one-way conduction circuit, and one-way conduction circuit is (but unlimited
In) in NMOS FET switch circuit, PMOS FET switch circuit and IGBT insulated gate bipolar transistor circuit
One of or any two or more combination.
As further embodiment, the noncontacting switch further includes protection circuit, protects circuit and semiconductor switch
Circuit is electrically connected, alternatively, protection circuit is electrically connected by driving circuit and semiconductor switch circuit.The protection circuit sheet
Body, which can be done directly on, protects the semiconductor switch circuit or the protection circuit to may act on driving circuit to protect
State semiconductor switch circuit.
As further embodiment, the protection circuit include but is not limited to temperature protection circuit, overvoltage crowbar,
Current foldback circuit, short-circuit protection circuit and surge current protection circuit one of circuit or any two kinds of circuits more than
Combination.
When the temperature protection circuit detects semiconductor switch circuit internal temperature values beyond threshold value, the temperature is protected
Protection circuit can act on driving circuit to control semiconductor switch circuit, reduce the loss power of semiconductor switch circuit, with
Achieve the purpose that reduce semiconductor switch circuit internal temperature.
When the overvoltage crowbar detects the born voltage value of semiconductor switch circuit beyond threshold value, the over-voltage
Protection circuit can reduce the voltage value that semiconductor switch circuit is born, to achieve the purpose that protect semiconductor switch circuit.
It is described when the current value that the current foldback circuit detects that semiconductor switch circuit inside passes through exceeds threshold value
Current foldback circuit can act on driving circuit to control semiconductor switch circuit, reduce the electricity that semiconductor switch circuit passes through
Flow valuve, to achieve the purpose that protect semiconductor switch circuit.
When the short-circuit protection circuit detects the circuit that bridge rectifier, semiconductor switch circuit, load are constituted
When middle some shorted devices of generation, the short-circuit protection circuit can act on driving circuit to control semiconductor switch circuit,
To achieve the purpose that protect semiconductor switch circuit.
When the surge current protection circuit detects that bridge rectifier, semiconductor switch circuit, load are constituted
When surge current occurring in circuit, surge current is can be absorbed in the surge current protection circuit, is opened with reaching protection semiconductor
The purpose on powered-down road.
As further embodiment, the rectification circuit is bridge rectifier route.
As further embodiment, the power-supply circuit includes but is not limited to zero live wire power getting circuit, single live wire power getting
One of circuit or combination more than any two kinds of circuits of circuit and battery electricity-taking circuit.
As further embodiment, the power-supply circuit is equipped with voltage stabilizing chip and filter capacitor.Pass through voltage stabilizing chip pressure stabilizing
Burning voltage is formed afterwards and after filter capacitor filters, the switch detection circuit is enable to stablize the conducting of errorless detection switch
With off-state.
As further embodiment, the ac output end is equipped with more than one, and each ac output end is correspondingly provided with one
A rectification circuit, each rectification circuit are connected with a semiconductor switch circuit and driving circuit；Switch detection circuit is equipped with one
A above signaling switch, signaling switch and driving circuit correspond, and power-supply circuit is equipped with one.
As further embodiment, the switch detection circuit is equipped with touch control chip, and the signaling switch is to touch
Switch.
As further embodiment, each ac output end is connected with load respectively.
Beneficial effects of the present invention are as follows:
Such noncontacting switch can control driving circuit when detecting that switch on and off state changes, and change semiconductor switch
The corresponding on off operating mode of circuit, to reach the function of control load power on/off；During loading power on/off because of control, no machinery
The contact of the physical properties such as contact contacts or separation, therefore will not generate the physical phenomenons such as electric arc or electric spark, keeps switch available
In the environment that there may be flammable explosive gas, so that the life safety or physical security in certain hazardous environments have more
Good guarantee.
Detailed description of the invention
Fig. 1 is first embodiment of the invention schematic block circuit diagram.
Fig. 2 is one embodiment circuit diagram of power-supply circuit in the present invention.
Fig. 3 is second embodiment of the invention schematic block circuit diagram.
Fig. 4 is the circuit diagram of second embodiment of the invention.
Fig. 5 is the circuit diagram of third embodiment of the invention.
Fig. 6 is fourth embodiment of the invention schematic block circuit diagram.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment one
It is shown in Figure 1, a kind of noncontacting switch, including rectification circuit 20, semiconductor switch circuit 60, driving circuit 30, open
Close detection circuit 40, power-supply circuit 50 and protection circuit 70, the DC output end and semiconductor switch circuit 60 of rectification circuit 20
Be electrically connected, semiconductor switch circuit 60 also with driving circuit 30 be electrically connected, driving circuit 30 also with switch detection circuit 40
It is electrically connected, power-supply circuit 50 is powered to switch detection circuit 40；The AC terminal of rectification circuit 20 be ac input end (i.e.
Firewire input terminal LIN) and ac output end (i.e. fire wire output end LOUT), switch detection circuit 40 detect its switch on and off shape
When state changes, control driving circuit 30 changes the corresponding on off operating mode of semiconductor switch circuit 60, to control ac output end
On-off.Circuit 70 and semiconductor switch circuit 60 and driving circuit 30 is protected to be electrically connected.Noncontacting switch is connect with load 10
In use, load 10 is connect with zero curve N and fire wire output end LOUT respectively.
As shown in connection with fig. 2, the power-supply circuit 50 is battery electricity-taking circuit, and battery electricity-taking circuit includes battery 501, first
Capacitor C1, voltage stabilizing chip V1 and the second capacitor C2, first capacitor C1 are connected between the positive and negative anodes of battery 501, voltage stabilizing chip V1
The anode of electrode input end and battery 501 connect, the cathode connecting pin of voltage stabilizing chip V1 is connect with the cathode of battery 501, surely
It presses and is connected with the second capacitor C2 between the cathode connecting pin and pressure stabilizing cathode output end of chip V1.The pressure stabilizing anode of voltage stabilizing chip V1
Output end is powered to switch detection circuit 40.
The semiconductor switch circuit 60 is one-way conduction circuit, and one-way conduction circuit is NMOS fet switch electricity
It is one of or any two or more in road, PMOS FET switch circuit and IGBT insulated gate bipolar transistor circuit
Combination.
The protection circuit 70 includes temperature protection circuit 70, overvoltage crowbar 70, current foldback circuit 70, short circuit guarantor
One of circuit or combination more than any two kinds of circuits of protection circuit 70 and surge current protection circuit 70.
The rectification circuit 20 is bridge rectifier route.
Embodiment two
It is shown in Figure 3, a kind of noncontacting switch, including rectification circuit 20, semiconductor switch circuit 60, driving circuit 30, open
Close detection circuit 40, power-supply circuit 50 and protection circuit 70, the DC output end and semiconductor switch circuit 60 of rectification circuit 20
Be electrically connected, semiconductor switch circuit 60 also with driving circuit 30 be electrically connected, driving circuit 30 also with switch detection circuit 40
It is electrically connected, power-supply circuit 50 is powered to switch detection circuit 40；The AC terminal of rectification circuit 20 be ac input end (i.e.
Firewire input terminal LIN) and ac output end (i.e. fire wire output end LOUT), switch detection circuit 40 detect its switch on and off shape
When state changes, control driving circuit 30 changes the corresponding on off operating mode of semiconductor switch circuit 60, to control ac output end
On-off.Circuit 70 and semiconductor switch circuit 60 and driving circuit 30 is protected to be electrically connected.Noncontacting switch is connect with load 10
In use, load 10 is connect with zero curve N and fire wire output end LOUT respectively.
The power-supply circuit 50 includes zero live wire power getting circuit.
The semiconductor switch circuit 60 is one-way conduction circuit, and one-way conduction circuit is NMOS fet switch electricity
Road.
The protection circuit 70 includes temperature protection circuit.
The rectification circuit 20 is bridge rectifier route.
As shown in connection with fig. 4, the power-supply circuit 50 is by transformer T1, first diode D1, first capacitor C1, voltage stabilizing chip
V1 and the second capacitor C2 is constituted, and the input terminal of transformer T1 is connect with firewire input terminal LIN and zero curve N, the output of transformer T1
End is powered by first diode D1 rectification and the filtered direct current of first capacitor C1 to driving circuit 30, meanwhile, it is rectified
Filtered direct current is powered after voltage stabilizing chip V1 pressure stabilizing and the second capacitor C2 filtering to switch detection circuit 40 again.
The driving circuit 30 includes the 4th resistance R4, the first triode Q1 and the second triode Q2.
The switch detection circuit 40 includes touch control chip IC 1 and soft-touch control TS1.
The semiconductor switch circuit 60 includes the G of second resistance R2 and NMOS field-effect tube Q3, NMOS field-effect tube Q3
Pole (control electrode) is connect with one end of the driving circuit 30 and second resistance R2, the pole S (output stage) of NMOS field-effect tube Q3
It connect and is grounded with the other end of second resistance R2, the direct current of the pole D (power pole) and rectification circuit 20 of NMOS field-effect tube Q3
Output end connection.
The protection circuit 70 include thermistor R3, the 5th resistance R5 and third capacitor C3, the one end thermistor R3 with
It is in parallel after the pole the D connection of NMOS field-effect tube Q3, thermistor R3 other end ground connection, the 5th resistance R5 and third capacitor C3 series connection
Between the both ends thermistor R3.
Embodiment three
It is shown in Figure 5, a kind of noncontacting switch, including rectification circuit 20, semiconductor switch circuit 60, driving circuit 30, open
Close detection circuit 40, power-supply circuit 50 and protection circuit 70, the DC output end and semiconductor switch circuit 60 of rectification circuit 20
Be electrically connected, semiconductor switch circuit 60 also with driving circuit 30 be electrically connected, driving circuit 30 also with switch detection circuit 40
It is electrically connected, power-supply circuit 50 is powered to switch detection circuit 40；The AC terminal of rectification circuit 20 be ac input end and
Ac output end, when switch detection circuit 40 detects that its switch on and off state changes, control driving circuit 30 changes semiconductor
The corresponding on off operating mode of switching circuit 60, to control the on-off of ac output end.Protect circuit 70 and semiconductor switch circuit 60
It is electrically connected with driving circuit 30.
There are two the ac output end is set, two ac output ends are respectively fire wire output end LOUT1 and firewire output
LOUT2, fire wire output end LOUT1 and fire wire output end LOUT2 are respectively corresponded equipped with a rectification circuit 20, each rectified current at end
Road 20 is connected with a semiconductor switch circuit 60 and driving circuit 30；Switch detection circuit 40 is set there are two signaling switch, is believed
Number switch with driving circuit 30 correspond, power-supply circuit 50 be equipped with one.
The power-supply circuit 50 includes zero live wire power getting circuit.
The semiconductor switch circuit 60 is one-way conduction circuit, and one-way conduction circuit is NMOS fet switch electricity
Road.
The protection circuit 70 includes temperature protection circuit.
The rectification circuit 20 is bridge rectifier route.
The switch detection circuit 40 includes touch control chip IC 1, the first soft-touch control TS1 and the second soft-touch control
TS2。
The power-supply circuit 50 is by transformer T1, first diode D1, the second diode D2, third diode D3, first
Capacitor C1, the second capacitor C2, third capacitor C3, the 5th capacitor C5 and voltage stabilizing chip V1 are constituted.The input terminal and fire of transformer T1
Line input terminal LIN is connected with zero curve N, and transformer T1 is equipped with three groups of outputs, wherein one group of output is rectified by first diode D1
With the filtered direct current of first capacitor C1 to switch detection circuit 40 after voltage stabilizing chip V1 pressure stabilizing and the second capacitor C2 filtering
Power supply.Another group of output of transformer T1 is by the second diode D2 rectification and the filtered direct current of third capacitor C3 to one
Driving circuit 30 is powered, and the another group of output of transformer T1 is filtered straight by third diode D3 rectification and the 5th capacitor C5
Galvanic electricity is powered to another driving circuit 30.
One driving circuit 30 includes first resistor R1, the 7th resistance R7 and the first photo-coupler IC2.First optocoupler
The touch control chip IC 1 of clutch IC2 and switch detection circuit 40 is electrically connected, and the first photo-coupler IC2 passes through first resistor
R1 and pressure stabilizing output VCC are electrically connected, and the first photo-coupler IC2 passes through the 7th resistance R7 and semiconductor switching circuit 60 electrically
Connection.The semiconductor switching circuit 60 includes the pole G of the 8th resistance R8 and NMOS field-effect tube Q4, NMOS field-effect tube Q4
(control electrode) is connect with one end of the 7th resistance R7 of one driving circuit 30 and the 8th resistance R8, NMOS field-effect tube Q4
The pole S (output stage) connect and be grounded with the other end of the 8th resistance R8, the pole D (power pole) and one of NMOS field-effect tube Q4
The DC output end of rectification circuit 20 connects.
Another described driving circuit 30 includes second resistance R2,3rd resistor R3 and the second photo-coupler IC3.Second light
The touch control chip IC 1 of coupler IC3 and switch detection circuit 40 is electrically connected, and the second photo-coupler IC3 passes through the second electricity
It hinders R2 and pressure stabilizing output VCC is electrically connected, the second photo-coupler IC3 passes through 3rd resistor R3 and another semiconductor switch circuit 60
It is electrically connected.Another semiconductor switch circuit 60 includes the 4th resistance R4 and NMOS field-effect tube Q2, NMOS field-effect tube
The pole G (control electrode) of Q2 is connect with one end of the 3rd resistor R3 of another driving circuit 30 and the 8th resistance R8, NMOS
The pole S (output stage) of field-effect tube Q4 connect and is grounded with the other end of the 4th resistance R4, and the pole D of NMOS field-effect tube Q2 (supplies
Electrode) it is connect with the DC output end of another rectification circuit 20.
There are two the protection circuit 70 is set, one of protection circuit 70 include thermistor R9, the tenth resistance R10 and
6th capacitor C6, the one end thermistor R9 are connect with the pole D of NMOS field-effect tube Q4, thermistor R9 other end ground connection, and the tenth
It is connected in parallel between the both ends thermistor R9 after resistance R10 and the 6th capacitor C6 series connection.Another protection circuit 70 includes temperature-sensitive electricity
Resistance R5, the 6th resistance R6 and the 4th capacitor C4, the one end thermistor R5 are connect with the pole D of NMOS field-effect tube Q2, thermistor
It is connected in parallel between the both ends thermistor R5 after R5 other end ground connection, the 6th resistance R6 and the 4th capacitor C4 series connection.
In Fig. 5, GND indicates ground connection.
Example IV
Difference with embodiment three is: it is shown in Figure 6, there are three the ac output end is set, and three ac output ends point
Not Wei fire wire output end LOUT1, fire wire output end LOUT2 and fire wire output end LOUT3, fire wire output end LOUT1, firewire output
End LOUT2 and fire wire output end LOUT3 is respectively corresponded equipped with a rectification circuit 20, and each rectification circuit 20 is connected with one and half
Conductor switching circuit 60 and driving circuit 30；Switch detection circuit 40 is set there are two signaling switch, signaling switch and driving circuit
30 correspond, and power-supply circuit 50 is equipped with one.Fire wire output end LOUT1, fire wire output end LOUT2 and fire wire output end
LOUT3 is connect with first the 101, second load 102 of load and third load 103 respectively, and each load is also connect with zero curve N respectively.
Claims (10)
1. a kind of noncontacting switch, it is characterised in that: including rectification circuit, semiconductor switch circuit, driving circuit, switch detection
Circuit and power-supply circuit, the DC output end and semiconductor switch circuit of rectification circuit are electrically connected, and semiconductor switch circuit is also
It is electrically connected with driving circuit, driving circuit is also electrically connected with switch detection circuit, and power-supply circuit is supplied to switch detection circuit
Electricity；The AC terminal of rectification circuit is ac input end and ac output end, and switch detection circuit detects its switch on and off
When state changes, control driving circuit changes the corresponding on off operating mode of semiconductor switch circuit, to control the logical of ac output end
It is disconnected.
2. noncontacting switch according to claim 1, it is characterised in that: the semiconductor switch circuit is one-way conduction electricity
Road, one-way conduction circuit are NMOS FET switch circuit, PMOS FET switch circuit and IGBT insulated gate bipolar
One of or any two or more combination in transistor circuit.
3. noncontacting switch according to claim 1, it is characterised in that: further include protection circuit, protect circuit and partly lead
Body switching circuit is electrically connected, alternatively, protection circuit is electrically connected by driving circuit and semiconductor switch circuit.
4. noncontacting switch according to claim 3, it is characterised in that: the protection circuit include temperature protection circuit,
Overvoltage crowbar, current foldback circuit, short-circuit protection circuit and surge current protection circuit one of circuit or any
Combinations more than two kinds of circuits.
5. noncontacting switch according to claim 1, it is characterised in that: the rectification circuit is bridge rectifier route.
6. noncontacting switch according to claim 1, it is characterised in that: the power-supply circuit includes zero live wire power getting electricity
Road, one of circuit of single live wire power getting circuit and battery electricity-taking circuit or combination more than any two kinds of circuits.
7. noncontacting switch according to claim 1, it is characterised in that: the power-supply circuit is equipped with voltage stabilizing chip and filtering
Capacitor.
8. noncontacting switch according to claim 1, it is characterised in that: the ac output end is equipped with more than one, respectively
A ac output end is correspondingly provided with a rectification circuit, and each rectification circuit is connected with a semiconductor switch circuit and driving electricity
Road；Switch detection circuit is equipped with more than one signaling switch, and signaling switch and driving circuit correspond, and power-supply circuit is equipped with
One.
9. noncontacting switch according to claim 8, it is characterised in that: the switch detection circuit is equipped with touch control core
Piece, the signaling switch are soft-touch control.
10. noncontacting switch according to claim 8, it is characterised in that: each ac output end respectively with load
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735455.0A CN110350899A (en) | 2019-08-09 | 2019-08-09 | Noncontacting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735455.0A CN110350899A (en) | 2019-08-09 | 2019-08-09 | Noncontacting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110350899A true CN110350899A (en) | 2019-10-18 |
Family
ID=68184595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735455.0A Withdrawn CN110350899A (en) | 2019-08-09 | 2019-08-09 | Noncontacting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110350899A (en) |
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| US20190035571A1 (en) * | 2016-01-24 | 2019-01-31 | Guangzhou Kingser Electronics Co., Ltd | Arc-extinguishing power device driving apparatus and arc extinguishing apparatus |
| CN109687390A (en) * | 2019-02-01 | 2019-04-26 | 丁建民 | Tracking mode electronics fireproofing controller and its control method |
| CN210075183U (en) * | 2019-08-09 | 2020-02-14 | 广东福田电器有限公司 | Contactless switch |
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2019
- 2019-08-09 CN CN201910735455.0A patent/CN110350899A/en not_active Withdrawn
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|---|---|---|---|---|
| CN1164746A (en) * | 1997-05-22 | 1997-11-12 | 马鸿绪 | Sparkless switch |
| KR200321780Y1 (en) * | 2003-04-25 | 2003-07-31 | 황종성 | Power Factor Compensation Circuit of Arc Welding Machine |
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| CN202309657U (en) * | 2011-03-28 | 2012-07-04 | 天津瑞能电气有限公司 | Power switch based on IGBT module |
| CN202550871U (en) * | 2012-03-27 | 2012-11-21 | 深圳市朗科电器有限公司 | Circuit preventing impact of heavy current in electrifying moment |
| CN105428118A (en) * | 2014-12-11 | 2016-03-23 | 广州市金矢电子有限公司 | Arc extinguishing device and non-arc switch |
| CN205105185U (en) * | 2015-09-23 | 2016-03-23 | 江苏矽莱克电子科技有限公司 | Cross internal circuit that zero output type exchanged solid state relay |
| CN106658811A (en) * | 2015-10-30 | 2017-05-10 | 常州明石晶电科技有限公司 | LED light source and driving circuit thereof |
| US20190035571A1 (en) * | 2016-01-24 | 2019-01-31 | Guangzhou Kingser Electronics Co., Ltd | Arc-extinguishing power device driving apparatus and arc extinguishing apparatus |
| CN107127422A (en) * | 2017-07-07 | 2017-09-05 | 兰州理工大学技术工程学院 | A kind of arc welder power source of High Power Factor technology |
| CN109687390A (en) * | 2019-02-01 | 2019-04-26 | 丁建民 | Tracking mode electronics fireproofing controller and its control method |
| CN210075183U (en) * | 2019-08-09 | 2020-02-14 | 广东福田电器有限公司 | Contactless switch |
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