CN210724716U - Reset overload protection circuit of high-voltage pulse generator - Google Patents
Reset overload protection circuit of high-voltage pulse generator Download PDFInfo
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- CN210724716U CN210724716U CN201922182060.0U CN201922182060U CN210724716U CN 210724716 U CN210724716 U CN 210724716U CN 201922182060 U CN201922182060 U CN 201922182060U CN 210724716 U CN210724716 U CN 210724716U
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Abstract
When a two-section switch is switched to a voltage stabilizing circuit II and is connected with a capacitor, a negative input power supply is used for stabilizing the voltage of the voltage stabilizing circuit II and then charging the capacitor to form a negative charging state. When the two-section switch is switched to the voltage stabilizing circuit I to be connected with the capacitor, the electric energy released by the capacitor is quickly consumed by the load consumption device, the situation that the voltage stabilizing circuit I is burnt due to the fact that the capacitor and the positive input power supply form a series structure to cause voltage rise is avoided, after the electric energy released by the capacitor is released, the electric energy released by the positive input power supply is stabilized by the voltage stabilizing circuit I to charge the capacitor, and at the moment, the electric energy is in a positive charging state. The situation that the capacitor is overloaded and the circuit is burnt out when the capacitor is reset under the negative voltage state is avoided. The service life of the instrument is prolonged. The capacitor is charged through a double electrode, and then the capacitor discharges to a series circuit formed by the inductor and the load in sequence, so that finally required positive and negative pulses are generated on the load.
Description
Technical Field
The utility model relates to an electronic instrument technical field, concretely relates to high-voltage pulse generator overload protection circuit that resets.
Background
In the high-power high-voltage positive and negative pulse generator, a positive power supply and a negative power supply are used for respectively and sequentially carrying out bipolar charging on a capacitor C, and then the capacitor discharges to respectively generate positive and negative pulses. However, when the generator needs to be reset during operation, a positive voltage is superimposed on the capacitor discharge voltage, which may easily cause a circuit burnout due to an excessively high voltage.
Disclosure of Invention
The utility model discloses an overcome the not enough of above technique, provide a circuit overload's high-voltage pulse generator overload protection circuit that resets when preventing to reset.
The utility model overcomes the technical scheme that its technical problem adopted is:
a high voltage pulse generator reset overload protection circuit, comprising:
the positive pole of the negative input power supply is connected with the negative pole of the positive input power supply, and the positive input power supply and the negative input power supply form a series connection structure;
one input end of the two-section switch is connected to the positive electrode of the positive input power supply through a voltage stabilizing circuit I, and the other input end of the two-section switch is connected to the negative electrode of the negative input power supply through a voltage stabilizing circuit II;
one end of the capacitor is connected with the output end of the two-end switch, and the other end of the capacitor is simultaneously connected with the negative electrode of the positive input power supply and the positive electrode of the negative input power supply;
the pulse switch circuit, the inductor and the load are connected in series and then connected in parallel with the capacitor; and
and when the two-section switch is switched to the capacitor and is connected with the load consumption device in series, the electric energy released by the capacitor is consumed by the load consumption device.
Furthermore, the load consumption device comprises a diode, the anode of the diode is connected to the cathode of the positive input power supply and the anode of the negative input power supply through a resistor, and the cathode of the diode is connected to the voltage stabilizing circuit I.
The utility model has the advantages that: when the two-section switch is switched to the voltage stabilizing circuit II to be connected with the capacitor, the negative input power supply is used for charging the capacitor after being stabilized by the voltage stabilizing circuit II to form a negative charging state. When the two-section switch is switched to the voltage stabilizing circuit I to be connected with the capacitor, the electric energy released by the capacitor is quickly consumed by the load consumption device, the condition that the voltage stabilizing circuit I is burnt due to the fact that the voltage of a series structure formed by the capacitor and the positive input power supply rises cannot be caused, after the electric energy released by the capacitor is released, the electric energy released by the positive input power supply is stabilized by the voltage stabilizing circuit I, the capacitor is charged, and at the moment, the capacitor is in a positive charging state. The situation that the capacitor is overloaded and the circuit is burnt out when the capacitor is reset under the negative voltage state is avoided. The service life of the instrument is prolonged. The capacitor is charged through a double electrode, and then the capacitor discharges to a series circuit formed by the inductor and the load in sequence, so that finally required positive and negative pulses are generated on the load.
Drawings
FIG. 1 is a circuit diagram of the present invention;
in the figure, 1, a positive input power supply 2, a negative input power supply 3, a voltage stabilizing circuit I4, a voltage stabilizing circuit II 5, a resistor 6, a diode 7, a two-section switch 8, a capacitor 9, a pulse switch circuit 10, an inductor 11 and a load.
Detailed Description
The present invention will be further explained with reference to fig. 1.
A high voltage pulse generator reset overload protection circuit, comprising: the power supply comprises a positive input power supply 1 and a negative input power supply 2, wherein the positive electrode of the negative input power supply 2 is connected with the negative electrode of the positive input power supply 1, and the positive input power supply 1 and the negative input power supply 2 form a series connection structure; one input end of the two-section switch 7 is connected to the anode of the positive input power supply 1 through a voltage stabilizing circuit I3, and the other input end of the two-section switch is connected to the cathode of the negative input power supply 2 through a voltage stabilizing circuit II 4; one end of the capacitor 8 is connected with the output end of the two-end switch 7, and the other end of the capacitor is simultaneously connected with the negative electrode of the positive input power supply 1 and the positive electrode of the negative input power supply 2; the pulse switch circuit 9, the inductor 10 and the load 11 are connected in series and then connected in parallel with the capacitor 8; and a load consuming device, one end of which is connected to the voltage stabilizing circuit I3, and the other end of which is connected to the negative electrode of the positive input power supply 1 and the positive electrode of the negative input power supply 2, wherein when the two-stage switch 7 is switched to the capacitor 8 and connected in series with the load consuming device, the electric energy released by the capacitor 8 is consumed by the load consuming device.
When the two-section switch 7 is switched to the voltage stabilizing circuit II 4 and connected with the capacitor 8, the negative input power supply 2 is stabilized by the voltage stabilizing circuit II 4 and then charges the capacitor 8 to form a negative charging state. When the two-stage switch 7 is switched to the voltage stabilizing circuit I3 and connected with the capacitor 8, the electric energy released by the capacitor 8 is quickly consumed by a load consumption device, the condition that the voltage stabilizing circuit I3 is burnt due to voltage rise caused by a series structure formed by the capacitor 8 and the positive input power supply 1 cannot be caused, after the electric energy of the capacitor 8 is released, the electric energy released by the positive input power supply 1 is stabilized by the voltage stabilizing circuit I3, then the capacitor 8 is charged, and at the moment, the charging state is positive. The situation that the capacitor 8 is overloaded and the circuit is burnt out when the capacitor is reset under the negative voltage state is avoided. The service life of the instrument is prolonged. The capacitor 8 is charged in a bipolar manner, and the capacitor discharges the series circuit of the inductor 10 and the load 11 in turn, thereby generating the finally required positive and negative pulses on the load 11.
Further, the load consumption device comprises a diode 6, the anode of the diode 6 is connected to the cathode of the positive input power supply 1 and the anode of the negative input power supply 2 through a resistor 5, and the cathode of the diode 6 is connected to the voltage stabilizing circuit i 3. The diode 6 has the characteristic of one-way conduction, when the two-stage switch 7 is switched to the voltage stabilizing circuit I3 and connected with the capacitor 8, the electric energy of the discharging current of the capacitor 8 is quickly consumed by the resistor 5 after the discharging current flows through the resistor 5 and the diode 6, and therefore the voltage of the voltage stabilizing circuit I3 cannot be increased and burnt out due to the fact that a series power supply formed by the capacitor 8 and the voltage stabilizing circuit I3.
Claims (2)
1. A high voltage pulse generator reset overload protection circuit, comprising:
the power supply comprises a positive input power supply (1) and a negative input power supply (2), wherein the positive electrode of the negative input power supply (2) is connected with the negative electrode of the positive input power supply (1), and the positive input power supply (1) and the negative input power supply (2) form a series connection structure;
one input end of the two-section switch (7) is connected to the anode of the positive input power supply (1) through a voltage stabilizing circuit I (3), and the other input end of the two-section switch is connected to the cathode of the negative input power supply (2) through a voltage stabilizing circuit II (4);
one end of the capacitor (8) is connected with the output end of the two-end switch (7), and the other end of the capacitor is simultaneously connected with the negative electrode of the positive input power supply (1) and the positive electrode of the negative input power supply (2);
the pulse switch circuit (9), the inductor (10) and the load (11) are connected in series and then connected in parallel with the capacitor (8); and
and one end of the load consumption device is connected with the voltage stabilizing circuit I (3), the other end of the load consumption device is simultaneously connected with the negative electrode of the positive input power supply (1) and the positive electrode of the negative input power supply (2), and when the two-section switch (7) is switched to the capacitor (8) to be connected with the load consumption device in series, the electric energy released by the capacitor (8) is consumed by the load consumption device.
2. The high voltage pulse generator reset overload protection circuit of claim 1, wherein: the load consumption device comprises a diode (6), the anode of the diode (6) is connected with the cathode of the positive input power supply (1) and the anode of the negative input power supply (2) through a resistor (5), and the cathode of the diode (6) is connected with the voltage stabilizing circuit I (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182060.0U CN210724716U (en) | 2019-12-09 | 2019-12-09 | Reset overload protection circuit of high-voltage pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182060.0U CN210724716U (en) | 2019-12-09 | 2019-12-09 | Reset overload protection circuit of high-voltage pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210724716U true CN210724716U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922182060.0U Active CN210724716U (en) | 2019-12-09 | 2019-12-09 | Reset overload protection circuit of high-voltage pulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210724716U (en) |
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2019
- 2019-12-09 CN CN201922182060.0U patent/CN210724716U/en active Active
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