CN209982034U - Short-circuit protection circuit for electric mosquito swatter electric mosquito net surface - Google Patents
Short-circuit protection circuit for electric mosquito swatter electric mosquito net surface Download PDFInfo
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- CN209982034U CN209982034U CN201920626056.6U CN201920626056U CN209982034U CN 209982034 U CN209982034 U CN 209982034U CN 201920626056 U CN201920626056 U CN 201920626056U CN 209982034 U CN209982034 U CN 209982034U
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Abstract
The utility model relates to an electric mosquito swatter electric mosquito net face short-circuit protection circuit, include by triode Q1, step up transformer T, the high-frequency oscillation circuit that resistance R2 and safety resistor FS are constituteed, through set up safety resistor FS in high-frequency oscillation circuit, when circuit operating current or temperature rise surpassed the setting value, safety resistor FS was the high resistance state, thereby the electric current that makes the safety resistor FS of flowing through reduces greatly and reaches the holistic effect of protection circuit, promotes the product security, eliminates the potential safety hazard.
Description
Technical Field
The utility model relates to an electric mosquito swatter electric mosquito net surface short circuit protection circuit.
Background
The electric mosquito swatter on the market at present realizes that most of electric mosquitoes form self-oscillation boosting through a switching power tube and a boosting transformer, and then achieve the purpose of electric mosquito boosting through a voltage doubling circuit. But also have unacceptable disadvantages and drawbacks: if metal objects fall into the net surface or the net surface is deformed by external force and the like to cause short circuit, the switching power tube can rise in temperature and break down even has the possibility of burning when the switching power tube works in the state.
Therefore, further improvements are needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide an electric mosquito swatter electric mosquito net face short circuit protection circuit, aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least.
The purpose of the utility model is realized like this:
a short-circuit protection circuit for an electric mosquito swatter net surface comprises a triode Q1, a step-up transformer T, a high-frequency oscillation circuit composed of a resistor R2 and a safety resistor FS, wherein a primary winding of the step-up transformer T comprises a first primary coil and a second primary coil, a collector of the triode Q1 and one end of the first primary coil are respectively connected with the positive electrode of a power supply, the other end of the first primary coil is connected with one end of the resistor R2, the other end of the resistor R2 is connected with a base electrode of the triode Q1, an emitting electrode of the triode Q1 is connected with one end of the second primary coil, the other end of the second primary coil is connected with one end of the safety resistor FS, the other end of the safety resistor FS is connected with the negative electrode of the power supply, and a secondary winding of the step-up transformer T is.
And a voltage-multiplying boosting assembly is arranged between the secondary winding of the boosting transformer T and the net surface.
The voltage-multiplying boosting assembly comprises a capacitor C1, a capacitor C2, a capacitor C3, a diode D1, a diode D2 and a diode D3, wherein one end of the capacitor C1 is connected with one end of the secondary winding and the negative electrode of the diode D2, the other end of the capacitor C1 is connected with the negative electrode of the diode D1, the positive electrode of the diode D3 is connected with the positive electrode of the diode D1, one ends of the capacitor C2 and the capacitor C3 are connected with the other end of the secondary winding, the negative electrode of the diode D3 is connected with the other end of the capacitor C2, and the other end of the capacitor C3 is connected with the positive electrode of the diode D2.
The high-frequency oscillation circuit is internally provided with a Light Emitting Diode (LED), the anode of the LED is connected with the anode of the power supply, and the cathode of the LED is connected with the cathode of the power supply after being connected with a resistor R1 in series.
And a switch K is arranged in the high-frequency oscillation circuit and is arranged between the safety resistor FS and the negative electrode of the power supply.
The utility model has the advantages that:
through set up insurance resistance FS in high frequency oscillation circuit, when circuit operating current or temperature rise exceeded the setting value, insurance resistance FS was the high resistance state, thereby made the electric current of flowing through insurance resistance FS reduce by a wide margin and reach the holistic effect of protection circuit, promoted product security, eliminated the potential safety hazard.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic circuit diagram according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, the electric mosquito swatter net surface short circuit protection circuit comprises a high-frequency oscillation circuit composed of a triode Q1, a step-up transformer T, a resistor R2 and a safety resistor FS, wherein a primary winding of the step-up transformer T comprises a first primary coil and a second primary coil, a collector of the triode Q1 and one end of the first primary coil are respectively connected with a positive electrode of a power supply, the other end of the first primary winding is connected with one end of a resistor R2, the other end of the resistor R2 is connected with a base of a triode Q1, an emitter of the triode Q1 is connected with one end of the second primary coil, the other end of the second primary coil is connected with one end of a safety resistor FS, the other end of the safety resistor FS is connected with a negative electrode of the power supply, a secondary winding of the step-up transformer T is connected with a net surface 1, the safety resistor FS is arranged in the high-frequency oscillation circuit, when the working, the safety resistor FS is in a high-resistance state, so that the current flowing through the safety resistor FS is greatly reduced, the overall effect of a protection circuit is achieved, the product safety is improved, and potential safety hazards are eliminated.
Further, be equipped with voltage-multiplying boosting assembly between booster transformer T's secondary winding and wire side 1, promote the voltage on the wire side 1, realize the high-voltage electric mosquito effect.
Further, the voltage-doubling boosting assembly comprises a capacitor C1, a capacitor C2, a capacitor C3, a diode D1, a diode D2 and a diode D3, one end of a capacitor C1 is respectively connected with one end of the secondary winding and the cathode of the diode D2, the other end of the capacitor C1 is respectively connected with the cathode of the diode D1, the anode of the diode D3, the anode of the diode D1, one ends of the capacitor C2 and the capacitor C3 are respectively connected with the other end of the secondary winding, the cathode of the diode D3 is connected with the other end of the capacitor C2, the other end of the capacitor C3 is connected with the anode of the diode D2, the power voltage is boosted to 1000V through a high-frequency oscillation circuit, and then the voltage on the mesh surface 1 is boosted to 3000V under the action of the voltage-doubling boosting assembly, so as to realize the high-.
Furthermore, a Light Emitting Diode (LED) is arranged in the high-frequency oscillation circuit, the anode of the LED is connected with the anode of the power supply, the cathode of the LED is connected with the cathode of the power supply after being connected with a resistor R1 in series, and the LED can play a role in prompting and remind a user that the whole circuit is in a working state.
Furthermore, a switch K is arranged in the high-frequency oscillation circuit and is arranged between the safety resistor FS and the negative electrode of the power supply, so that the operation of a user is more convenient.
The above embodiments are merely preferred embodiments of the present invention, and other embodiments are also possible. Equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalent modifications or substitutions are intended to be included within the scope of the claims set forth herein.
Claims (5)
1. The utility model provides an electric mosquito swatter electric mosquito net face short-circuit protection circuit, its characterized in that includes by triode Q1, step up transformer T, the high-frequency oscillation circuit that resistance R2 and insurance resistance FS are constituteed, step up transformer T's primary winding includes first primary and second primary, triode Q1 the collecting electrode and the one end of first primary is connected with the positive pole of power respectively, and the other end and the one end of resistance R2 of first primary are connected, and the other end and the base of triode Q1 of resistance R2 are connected, and the projecting pole and the one end of second primary of triode Q1 are connected, and the other end and the one end of insurance resistance FS of second primary are connected, and the other end and the negative pole of power of insurance resistance FS are connected, and step up transformer T's secondary is connected with net face (1).
2. The electric mosquito swatter electric mosquito net surface short-circuit protection circuit as claimed in claim 1, characterized in that: and a voltage-multiplying and boosting assembly is arranged between the secondary winding of the boosting transformer T and the net surface (1).
3. The electric mosquito swatter electric mosquito net surface short-circuit protection circuit as claimed in claim 2, characterized in that: the voltage-multiplying boosting assembly comprises a capacitor C1, a capacitor C2, a capacitor C3, a diode D1, a diode D2 and a diode D3, one end of the capacitor C1 is connected with one end of the secondary winding and the negative electrode of the diode D2, the other end of the capacitor C1 is connected with the negative electrode of the diode D1, the positive electrode of the diode D3 is connected with the positive electrode of the diode D1, one ends of the capacitor C2 and the capacitor C3 are connected with the other end of the secondary winding, the negative electrode of the diode D3 is connected with the other end of the capacitor C2, and the other end of the capacitor C3 is connected with the positive electrode of the diode D2.
4. The electric mosquito swatter electric mosquito net surface short-circuit protection circuit as claimed in claim 1, characterized in that: and a Light Emitting Diode (LED) is arranged in the high-frequency oscillation circuit, the anode of the LED is connected with the anode of the power supply, and the cathode of the LED is connected with the cathode of the power supply after being connected with a resistor R1 in series.
5. The electric mosquito swatter electric mosquito net surface short-circuit protection circuit as claimed in claim 1, characterized in that: and a switch K is arranged in the high-frequency oscillation circuit and is arranged between the safety resistor FS and the negative electrode of the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626056.6U CN209982034U (en) | 2019-04-30 | 2019-04-30 | Short-circuit protection circuit for electric mosquito swatter electric mosquito net surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626056.6U CN209982034U (en) | 2019-04-30 | 2019-04-30 | Short-circuit protection circuit for electric mosquito swatter electric mosquito net surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209982034U true CN209982034U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920626056.6U Active CN209982034U (en) | 2019-04-30 | 2019-04-30 | Short-circuit protection circuit for electric mosquito swatter electric mosquito net surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209982034U (en) |
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2019
- 2019-04-30 CN CN201920626056.6U patent/CN209982034U/en active Active
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