CN110850335A - Electronic component leakage protection circuit - Google Patents
Electronic component leakage protection circuit Download PDFInfo
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- CN110850335A CN110850335A CN201911232588.2A CN201911232588A CN110850335A CN 110850335 A CN110850335 A CN 110850335A CN 201911232588 A CN201911232588 A CN 201911232588A CN 110850335 A CN110850335 A CN 110850335A
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- resistor
- protection circuit
- respectively connected
- leakage protection
- diode
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Abstract
An electric leakage protection circuit of an electronic element comprises an electric leakage protection circuit connected with the electronic element; the leakage protection circuit comprises resistors R1-R7, capacitors C1-C3, a rectifier diode VD, a voltage stabilizing diode VS, a microphone BM, transistors V1-V2, a thyristor VT, a light emitting diode VL and an electric bell HA.
Description
Technical Field
The invention relates to a protection circuit, in particular to an electronic element leakage protection circuit, and belongs to the technical field of element protection.
Background
Electronic components, which are basic elements of electronic circuits, are usually packaged individually and have two or more leads or metal contacts, are interconnected to form an electronic circuit with a specific function, such as an amplifier, a radio receiver, an oscillator, etc., and are soldered to a printed circuit board in one of the common ways of connecting electronic components. The electronic components may be individual packages (resistors, capacitors, inductors, transistors, diodes, etc.) or groups of various complexities, such as integrated circuits (op amps, resistors, logic gates, etc.).
No matter what kind of electronic component, all guarantee its operating condition stable, can not produce the electric leakage phenomenon in the time of work, but current electronic component does not include leakage protection yet, even if the electric leakage has not been by very obvious normal line in the normal course of using, causes dangerous accident easily to take place.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides an electric leakage protection circuit for an electronic component, which can monitor whether the electronic component leaks electricity in real time when the electronic component works normally, so as to ensure the safety of the circuit.
In order to achieve the above object, the present invention provides an electronic component leakage protection circuit, which includes an electronic component, and a leakage protection circuit connected to the electronic component; the leakage protection circuit comprises resistors R1-R7, capacitors C1-C3, a rectifier diode VD, a voltage stabilizing diode VS, a microphone BM, transistors V1-V2, a thyristor VT, a light emitting diode VL and an electric bell HA, 220V alternating voltage supplies power to the circuit, after rectification and voltage stabilization are carried out through the circuit, the circuit is respectively connected with one end of the capacitor C1, one end of the voltage stabilizing diode VS, one end of the resistor R2, one end of the resistor R4, one end of the resistor R6 and the anode of the thyristor VT, the other end of the resistor R2 is respectively connected with one end of the microphone BM, one end of the resistor R3 and the base of the transistor V1, the collector of the transistor V1 is respectively connected with the other end of the resistor R4 and one end of the capacitor C3, the other end of the capacitor C3 is respectively connected with the other end of the resistor R6, one end of the resistor R7 and the base of the transistor V2, the collector of, the cathode of the thyristor VT is respectively connected with one end of the indicator light EL and one end of the electric bell HA, the emitter of the transistor V1 is respectively connected with one end of the resistor R5 and one end of the capacitor C2, the other end of the capacitor C1 is respectively connected with one end of the rectifier diode VD, the other end of the voltage stabilizing diode VS, the other end of the microphone BM, the other end of the resistor R3, the other end of the resistor R5, the other end of the capacitor C2 and the other end of the resistor R7 and then is grounded, the other end of the rectifier diode VD is connected with one end of the resistor R1, and the other end of the resistor R1 is respectively connected with the other end of the indicator light EL and.
As a further improvement of the invention, the rectifier diode VD is an IN4007 type silicon rectifier diode.
As a further improvement of the present invention, the zener diode VS is a silicon zener diode of IN 4742.
As a further improvement of the invention, the transistor V1 and the transistor V2 both adopt NPN silicon transistors with the model number S9013.
As a further improvement of the invention, the thyristor VT is a bidirectional thyristor with the withstand voltage value of more than 400V.
As a further improvement of the invention, the microphone BM is an electret microphone.
Compared with the prior art, after the circuit is powered on, the electronic element starts to work, the leakage protection circuit is used for monitoring in real time, when the electronic element leaks electricity, the microphone BM senses a leakage signal and sends out a sound signal, the sound signal is converted into an electric signal, the electric signal is amplified through the transistor V1, the transistor V2 is conducted, the light emitting diode VL is lightened, the thyristor VT is triggered to be conducted after being triggered, the electric bell HA is powered on to give a ring tone, and the indicator light EL is lightened at the same time, namely, when the electronic element HAs a leakage phenomenon, a worker can be reminded of maintaining the circuit in time, so that the use safety of the circuit is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic circuit diagram of the leakage protection circuit of the present invention.
In the figure: 1. electronic component, 2, earth leakage protection circuit.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and fig. 2, an electric leakage protection circuit for an electronic component includes an electronic component and an electric leakage protection circuit connected to the electronic component; the leakage protection circuit comprises resistors R1-R7, capacitors C1-C3, a rectifier diode VD, a voltage stabilizing diode VS, a microphone BM, transistors V1-V2, a thyristor VT, a light emitting diode VL and an electric bell HA, 220V alternating voltage supplies power to the circuit, after rectification and voltage stabilization are carried out through the circuit, the circuit is respectively connected with one end of the capacitor C1, one end of the voltage stabilizing diode VS, one end of the resistor R2, one end of the resistor R4, one end of the resistor R6 and the anode of the thyristor VT, the other end of the resistor R2 is respectively connected with one end of the microphone BM, one end of the resistor R3 and the base of the transistor V1, the collector of the transistor V1 is respectively connected with the other end of the resistor R4 and one end of the capacitor C3, the other end of the capacitor C3 is respectively connected with the other end of the resistor R6, one end of the resistor R7 and the base of the transistor V2, the collector of, the cathode of the thyristor VT is respectively connected with one end of the indicator light EL and one end of the electric bell HA, the emitter of the transistor V1 is respectively connected with one end of the resistor R5 and one end of the capacitor C2, the other end of the capacitor C1 is respectively connected with one end of the rectifier diode VD, the other end of the voltage stabilizing diode VS, the other end of the microphone BM, the other end of the resistor R3, the other end of the resistor R5, the other end of the capacitor C2 and the other end of the resistor R7 and then is grounded, the other end of the rectifier diode VD is connected with one end of the resistor R1, and the other end of the resistor R1 is respectively connected with the other end of the indicator light EL and.
As a further improvement of the invention, the rectifier diode VD is an IN4007 type silicon rectifier diode.
As a further improvement of the present invention, the zener diode VS is a silicon zener diode of IN 4742.
As a further improvement of the invention, the transistor V1 and the transistor V2 both adopt NPN silicon transistors with the model number S9013.
As a further improvement of the invention, the thyristor VT is a bidirectional thyristor with the withstand voltage value of more than 400V.
As a further improvement of the invention, the microphone BM is an electret microphone.
The working principle is as follows: the alternating current 220V voltage is subjected to current limiting and voltage reduction by a resistor Rl, rectification by a rectifier diode VD, voltage stabilization by a voltage stabilizing diode VS and filtering by a capacitor Cl, and then + l2V working voltage is provided for a subsequent working circuit.
Claims (6)
1. An electric leakage protection circuit of an electronic element comprises the electronic element and is characterized by also comprising an electric leakage protection circuit connected with the electronic element; the leakage protection circuit comprises resistors R1-R7, capacitors C1-C3, a rectifier diode VD, a voltage stabilizing diode VS, a microphone BM, transistors V1-V2, a thyristor VT, a light emitting diode VL and an electric bell HA, 220V alternating voltage supplies power to the circuit, after rectification and voltage stabilization are carried out through the circuit, the circuit is respectively connected with one end of the capacitor C1, one end of the voltage stabilizing diode VS, one end of the resistor R2, one end of the resistor R4, one end of the resistor R6 and the anode of the thyristor VT, the other end of the resistor R2 is respectively connected with one end of the microphone BM, one end of the resistor R3 and the base of the transistor V1, the collector of the transistor V1 is respectively connected with the other end of the resistor R4 and one end of the capacitor C3, the other end of the capacitor C3 is respectively connected with the other end of the resistor R6, one end of the resistor R7 and the base of the transistor V2, the collector of, the cathode of the thyristor VT is respectively connected with one end of the indicator light EL and one end of the electric bell HA, the emitter of the transistor V1 is respectively connected with one end of the resistor R5 and one end of the capacitor C2, the other end of the capacitor C1 is respectively connected with one end of the rectifier diode VD, the other end of the voltage stabilizing diode VS, the other end of the microphone BM, the other end of the resistor R3, the other end of the resistor R5, the other end of the capacitor C2 and the other end of the resistor R7 and then is grounded, the other end of the rectifier diode VD is connected with one end of the resistor R1, and the other end of the resistor R1 is respectively connected with the other end of the indicator light EL and.
2. The leakage protection circuit of claim 1, wherein said rectifying diode VD is an IN4007 type silicon rectifying diode.
3. The circuit of claim 1, wherein the zener diode VS is a silicon zener diode of IN 4742.
4. The circuit of claim 1, wherein the transistors V1 and V2 are NPN silicon transistors with model number S9013.
5. The leakage protection circuit of claim 1, wherein the thyristor VT is a bidirectional thyristor with a voltage withstanding value of more than 400V.
6. The leakage protection circuit of claim 1, wherein the microphone BM is an electret microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232588.2A CN110850335A (en) | 2019-12-05 | 2019-12-05 | Electronic component leakage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232588.2A CN110850335A (en) | 2019-12-05 | 2019-12-05 | Electronic component leakage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110850335A true CN110850335A (en) | 2020-02-28 |
Family
ID=69607882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911232588.2A Withdrawn CN110850335A (en) | 2019-12-05 | 2019-12-05 | Electronic component leakage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110850335A (en) |
-
2019
- 2019-12-05 CN CN201911232588.2A patent/CN110850335A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200228 |
|
| WW01 | Invention patent application withdrawn after publication |