CN209526702U - A kind of three-wire type magnetic switch with surge protection function - Google Patents
A kind of three-wire type magnetic switch with surge protection function Download PDFInfo
- Publication number
- CN209526702U CN209526702U CN201920352027.5U CN201920352027U CN209526702U CN 209526702 U CN209526702 U CN 209526702U CN 201920352027 U CN201920352027 U CN 201920352027U CN 209526702 U CN209526702 U CN 209526702U
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- resistance
- diode
- surge protection
- magnetic switch
- protection function
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Abstract
The utility model relates to a kind of three-wire type magnetic switch with surge protection function; including shell, conducting wire, circuit board; the circuit forms magnetic inductor by hall integrated package IC1 and diode D1; Light-emitting diode LED 1 and resistance R2 form indicator; resistance R1, capacitor C1, transient diode ZD1 and resistance R4 form surge protection circuit; resistance R3, triode Q1 and transient diode ZD2 form switched output circuits, this four part synthesizes.When magnetic induction density B is greater than Bops or less than the designated value of Bopn, magnetic switch output end OUT exports high level.When generating surge current in power supply, surge protection circuit absorbs surge current pulse, has achieved the purpose that surge protection function.
Description
Technical field
The utility model relates to a kind of magnetic switch, especially a kind of three-wire type magnetic switch with surge protection function.
Background technique
As China's artificial intelligence rapidly develops, magnetic switch is widely used in industrial automation.
(IEC6100-4-5.2017) standard is not achieved there is also certain defect in the magnetic switch of domestic production at present
It is required that therefore ' often there is the phenomenon that burning out magnetic switch in use, it makes troubles to automated production.
Summary of the invention
The utility model to be solved above-mentioned defect, provides a kind of three-wire type magnetic switch with surge protection function,
Including shell 1, conducting wire 2, circuit board 3, one end of the first resistor R1 of the circuit, one end of capacitor C1, the first transient state inhibit
The negative pole end of diode ZD1, one end of second resistance R2, the emitter of triode Q1, the second Transient Suppression Diode ZD2 it is negative
Extremely in parallel with power supply positive input, the other end of first resistor R1 is connected with the 1st foot of hall integrated package IC1, capacitor C1
The other end, the positive terminal of the first Transient Suppression Diode ZD1, the negative pole end of diode D1 and the 4th resistance R4 one end simultaneously
Connection, the other end of the 4th resistance R4 is connected with power supply negative input terminal, and the of the positive terminal of diode D1 and hall integrated package IC1
3 feet are connected, and the 2nd foot of hall integrated package IC1 and the negative pole end of Light-emitting diode LED 1 are connected, the anode of Light-emitting diode LED 1
Hold, the other end of 3rd resistor R3 and the base of triode Q1 in parallel with one end of the other end of second resistance R2,3rd resistor R3
Pole is connected, and the collector of triode Q1, the positive terminal of the second Transient Suppression Diode ZD2 are in parallel with signal output end OUT.
The advantages of the utility model: there is surge protection function, stable and reliable for performance, long working life.
Illustrate the detailed content of the utility model below in conjunction with drawings and examples.
Detailed description of the invention
Fig. 1 is a kind of three-wire type magnetic switch schematic diagram with surge protection function of the utility model.
Fig. 2 is the utility model embodiment circuit diagram.
Specific embodiment
The utility model is a kind of three-wire type magnetic switch with surge protection function, including shell, in conducting wire and shell
Circuit board.
As shown in Fig. 1, magnetic inductor is made of hall integrated package IC, diode D1.
Indicator is made of second resistance R2 and Light-emitting diode LED 1.
Output signal control is made of 3rd resistor R3, triode Q1 and the second transient diode ZD2.
Surge protection circuit is made of first resistor R1, capacitor C1, the first transient diode ZD1 and the 4th resistance R4.
This four parts synthesis three-wire type magnetic switch circuit.
When Magnetic Induction device senses designated value of the magnetic induction density B greater than Bops or when less than the designated value of Bopn, suddenly
You open ic chip 1, and the 2nd foot exports low level, and Light-emitting diode LED 1 is shinny, so that the base potential of triode Q1 is lower than
Emitter potential, triode Q1 conducting, output end OUT export high level.
When at work, as occurred surge current pulse in power supply, there are the first transient diode ZD1, electricity in circuit
The surge circuit for holding C1, first resistor R1 and the 4th resistance R4 composition, absorbs surge current pulse, opens so that not burning out magnetism
Powered-down road, has achieved the purpose that surge protection function.
Claims (1)
1. a kind of three-wire type magnetic switch with surge protection function, including shell (1), conducting wire (2), circuit board (3), feature
Be one end of first resistor (R1) of the circuit, one end of capacitor (C1), the first Transient Suppression Diode (ZD1) cathode
End, one end of second resistance (R2), the emitter of triode (Q1), the second Transient Suppression Diode (ZD2) negative pole end and electricity
Source electrode input end is in parallel, and the 1st foot of the other end and hall integrated package (IC1) of first resistor (R1) is connected, capacitor (C1)
One end of the other end, the positive terminal of the first Transient Suppression Diode (ZD1), the negative pole end of diode (D1) and the 4th resistance (R4)
The other end of parallel connection, the 4th resistance (R4) is connected with power supply negative input terminal, the positive terminal and hall integrated package of diode (D1)
(IC1) the 3rd foot is connected, and the negative pole end of the 2nd foot and light emitting diode (LED1) of hall integrated package (IC1) is connected, and luminous two
The positive terminal of pole pipe (LED1) is in parallel with one end of the other end of second resistance (R2), 3rd resistor (R3), 3rd resistor (R3)
The base stage of the other end and triode (Q1) be connected, the collector of triode (Q1), the second Transient Suppression Diode (ZD2) are just
It is extremely in parallel with signal output end OUT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352027.5U CN209526702U (en) | 2019-03-05 | 2019-03-05 | A kind of three-wire type magnetic switch with surge protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352027.5U CN209526702U (en) | 2019-03-05 | 2019-03-05 | A kind of three-wire type magnetic switch with surge protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526702U true CN209526702U (en) | 2019-10-22 |
Family
ID=68231923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920352027.5U Expired - Fee Related CN209526702U (en) | 2019-03-05 | 2019-03-05 | A kind of three-wire type magnetic switch with surge protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209526702U (en) |
-
2019
- 2019-03-05 CN CN201920352027.5U patent/CN209526702U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 Termination date: 20200305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |