A high voltage power supply multiplexing circuit and method of use

Abstract

This invention discloses a high-voltage power supply multiplexing circuit and its usage method, belonging to the field of high-voltage technology. When high-voltage power supply V3 breaks down its load, this circuit uses low-voltage power supply V2 to replace high-voltage power supply V3, shuts down high-voltage power supply V1 and connects its load, and then restarts high-voltage power supply V1 to complete the high-voltage power supply multiplexing. This circuit adds diodes D1 and D2 to the multiplexing circuit. Diode D1 works with resistor R1 to prevent the voltage of low-voltage power supply V2 from flowing back to the load of high-voltage power supply V1. Diode D2 is designed to protect the internal components of low-voltage power supply V2 when high-voltage power supply V1 outputs high voltage. This enhances the stability and reliability of the circuit, thereby improving the reliability of the system using this high-voltage power supply multiplexing circuit, reducing product costs, increasing the utilization rate of high-voltage power supplies, and improving the power density of the product. The circuit structure and principle are simple, easy to operate and use, and highly applicable.

Description

Technical Field

[0001] This invention belongs to the field of high voltage technology, specifically relating to a high voltage power supply multiplexing circuit and its usage method. Background Technology

[0002] With the modernization of society, the application of electricity has penetrated into all sectors, bringing great convenience to people's social production and life. With the continuous development of science and technology, high-voltage power supply circuits are widely used in industry, agriculture, national defense, and medical fields. The performance requirements and cost control requirements of high-voltage power supply circuits are also gradually increasing. For example, high-voltage power supply circuits are required to have high stability, high power density, and high reliability. This leads to increasingly higher requirements for the circuit design of high-voltage power supply circuits.

[0003] In the existing technology, two independent high-voltage power supplies are required to realize the function of the high-voltage power supply system. Using two independent high-voltage power supplies not only makes the reliability and stability of the system weak and makes it difficult to control product costs, but also results in low utilization of high-voltage power supplies, leading to low power density. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a high-voltage power supply multiplexing circuit and its usage method. By adjusting the operating timing of this multiplexing circuit, the requirements of a high-voltage power supply system can be met by reducing two high-voltage power supplies to a single high-voltage power supply. This also improves the reliability and stability of the system, reduces product costs, and increases the power density of the high-voltage power supply.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-voltage power supply multiplexing circuit includes a high-voltage power supply V1 and a low-voltage power supply V2.

[0007] One output terminal of the high-voltage power supply V1 is connected to a capacitor C1, and the other output terminal is connected to a diode D1.

[0008] A resistor R1 is connected between the diode D1 and the high-voltage power supply V1.

[0009] The low-voltage power supply V2 is connected to diode D2;

[0010] The output terminals of diode D1 and diode D2 are connected to form two branches, one of which is connected to resistor R2 and the other is connected to capacitor C2.

[0011] A high-voltage power supply V3 is provided between the capacitor C2 and the connection between diodes D1 and D2, and the high-voltage power supply V3 is located on another branch.

[0012] Furthermore, the capacitor C1 is connected to a ground terminal GND1.

[0013] Furthermore, the capacitor C2 is connected to a ground terminal GND2.

[0014] Furthermore, the resistor R2 is connected to the grounding terminal GND2.

[0015] Furthermore, the grounding terminal GND1 is connected to the grounding terminal GND2.

[0016] Furthermore, a resistor R3 is connected between the grounding terminal GND1 and the grounding terminal GND2.

[0017] Furthermore, the capacitor C1 is a filter capacitor.

[0018] Furthermore, capacitor C2 is a filter capacitor.

[0019] Furthermore, both diode D1 and diode D2 are Schottky diodes.

[0020] A method for using a high-voltage power supply multiplexing circuit, based on the aforementioned high-voltage power supply multiplexing circuit, includes the following steps:

[0021] Connect the load of high-voltage power supply V3 to the circuit, and disconnect the load of high-voltage power supply V1; turn on high-voltage power supply V3 and low-voltage power supply V2; after high-voltage power supply V3 breaks down the load of high-voltage power supply V3, low-voltage power supply V2 replaces high-voltage power supply V3; disconnect high-voltage power supply V1, connect the load of high-voltage power supply V1 to the circuit; turn high-voltage power supply V1 back on.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention provides a high-voltage power supply multiplexing circuit. The circuit includes a high-voltage power supply V1, a low-voltage power supply V2, and a high-voltage power supply V3. When the high-voltage power supply V3 fails, the circuit uses the low-voltage power supply V2 to replace it, shutting down the high-voltage power supply V1 and connecting its load. The high-voltage power supply V1 is then restarted, thus completing the high-voltage power supply multiplexing. The circuit incorporates diodes D1 and D2. Diode D1, in conjunction with resistor R1, prevents voltage from the low-voltage power supply V2 from flowing back into the load of the high-voltage power supply V1. Diode D2 is designed to protect the internal components of the low-voltage power supply V2 when the high-voltage power supply V1 outputs high voltage. This enhances the stability and reliability of the circuit, thereby improving the reliability of systems using this high-voltage power supply multiplexing circuit, reducing product costs, increasing the utilization rate of the high-voltage power supply, and improving the power density of the product. The circuit has a simple structure and principle, is easy to operate and use, has strong applicability, and has high potential for widespread application.

[0024] Preferably, capacitors C1 and C2 in this invention are both connected to a ground terminal, and the two ground terminals are connected through resistor R3, which is another power supply load. In this way, the two ground terminals are connected, making the circuit safer and more stable.

[0025] Preferably, capacitors C1 and C2 in this invention are both filter capacitors, which are used to filter out AC components in the power rectifier circuit, making the output DC smoother.

[0026] Preferably, both diodes D1 and D2 in this invention are Schottky diodes, which have excellent voltage regulation and improve the back-breakdown effect.

[0027] The present invention also provides a method for using a high-voltage power supply multiplexing circuit. Based on the above-mentioned high-voltage power supply multiplexing circuit, this method can realize the multiplexing of high-voltage power in a high-voltage power supply system, improve the reliability and stability of the system, reduce product costs, and increase the power density of the high-voltage power supply. Attached Figure Description

[0028] Figure 1 A structural block diagram of a high-voltage power supply multiplexing circuit provided in an embodiment of the present invention;

[0029] Figure 2 A flowchart illustrating a method for using a high-voltage power supply multiplexing circuit, as provided in an embodiment of the present invention. Detailed Implementation

[0030] This invention provides a high-voltage power supply multiplexing circuit, including a high-voltage power supply V1 and a low-voltage power supply V2; one output terminal of the high-voltage power supply V1 is connected to a capacitor C1, and the other output terminal is connected to a diode D1; a resistor R1 is connected between the diode D1 and the high-voltage power supply V1; the low-voltage power supply V2 is connected to a diode D2; the output terminals of diodes D1 and D2 are connected to form two branches, one branch is connected to the resistor R2, and the other branch is connected to the capacitor C2; a high-voltage power supply V3 is disposed between the capacitor C2 and the connection point of diodes D1 and D2, and the high-voltage power supply V3 is located on the other branch; both capacitors C1 and C2 are filter capacitors; both diodes D1 and D2 are Schottky diodes.

[0031] The capacitor C1 is connected to the ground terminal GND1, the capacitor C2 is connected to the ground terminal GND2, the resistor R2 is connected to the ground terminal GND2, and the ground terminal GND1 is connected to the ground terminal GND2 through the resistor R3.

[0032] The present invention also provides a method for using a high-voltage power supply multiplexing circuit, characterized in that, based on the above-mentioned high-voltage power supply multiplexing circuit, it includes the following steps:

[0033] Connect the load of high-voltage power supply V3 to the circuit, disconnect the load of high-voltage power supply V1, turn on high-voltage power supply V3 and low-voltage power supply V2, and after high-voltage power supply V3 breaks down the load of high-voltage power supply V3, low-voltage power supply V2 replaces high-voltage power supply V3. Disconnect high-voltage power supply V1, connect the load of high-voltage power supply V1 to the circuit, and turn high-voltage power supply V1 back on.

[0034] Example

[0035] This embodiment provides a high-voltage power supply multiplexing circuit, such as Figure 1 As shown:

[0036] High-voltage power supply V1 and grounding terminal GND1 form one power output (rated output is high voltage, named high-voltage power supply V1), low-voltage power supply V2 and grounding terminal GND2 form one output (rated is low voltage, named low-voltage power supply V2), and high-voltage power supply V3 and grounding terminal GND2 form one output (rated is high voltage, named power supply 3). The high voltage of high-voltage power supply V3 is generated by voltage division of high-voltage power supply V1. Capacitor C1 is the filter capacitor for the output of high-voltage power supply V1, and capacitor C2 is the filter capacitor for the output of low-voltage power supply V2. Resistors R1 and R2 are voltage divider resistors for power conversion between low-voltage power supply V2 and high-voltage power supply V3. Diode D1 is connected to R1 to prevent the voltage of low-voltage power supply V2 from flowing back to the load of high-voltage power supply V1. If backflow occurs, it will cause the load of high-voltage power supply V1 to be incorrectly loaded, resulting in the failure of this circuit system. The function of diode D2 is to protect the internal components of low-voltage power supply V2 when high voltage is applied to high-voltage power supply V1. Resistor R3 is the load of other power supplies. This load (the load of the excitation power supply) serves to connect the line between ground terminal GND1 and ground terminal GND2.

[0037] like Figure 2 As shown, this embodiment also provides a method for using a high-voltage power multiplexing circuit, employing the aforementioned high-voltage power multiplexing circuit.

[0038] The working mechanism of this embodiment is as follows:

[0039] The load of high-voltage power supply V3 is connected first, while the load of high-voltage power supply V1 is disconnected. After the high voltage output of high-voltage power supply V3 breaks down the load of high-voltage power supply V3, the voltage of low-voltage power supply V2 replaces that of high-voltage power supply V3 and is applied to the load of the broken-down high-voltage power supply V3. At this time, high-voltage power supply V1 is turned off, the load of high-voltage power supply V1 is connected, and high-voltage power supply V1 is turned on again, thus completing the high-voltage power supply multiplexing.

[0040] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. A high-voltage power supply multiplexing circuit, characterized in that, Includes high-voltage power supply V1 and low-voltage power supply V2; One output terminal of the high-voltage power supply V1 is connected to a capacitor C1, and the other output terminal is connected to a diode D1. A resistor R1 is connected between the diode D1 and the high-voltage power supply V1. The low-voltage power supply V2 is connected to diode D2; The output terminals of diode D1 and diode D2 are connected to form two branches, one of which is connected to resistor R2 and the other is connected to capacitor C2. A high-voltage power supply V3 is provided between the capacitor C2 and the connection between diodes D1 and D2. The high-voltage power supply V3 is located on another branch. The high voltage of the high-voltage power supply V3 is generated by voltage division of the high-voltage power supply V1.

2. The high-voltage power supply multiplexing circuit according to claim 1, characterized in that, The capacitor C1 is connected to the ground terminal GND1.

3. The high-voltage power supply multiplexing circuit according to claim 2, characterized in that, The capacitor C2 is connected to the ground terminal GND2.

4. A high-voltage power supply multiplexing circuit according to claim 3, characterized in that, The resistor R2 is connected to the grounding terminal GND2.

5. A high-voltage power supply multiplexing circuit according to claim 4, characterized in that, The grounding terminal GND1 is connected to the grounding terminal GND2.

6. A high-voltage power supply multiplexing circuit according to claim 5, characterized in that, A resistor R3 is connected between the grounding terminal GND1 and the grounding terminal GND2.

7. A high-voltage power supply multiplexing circuit according to claim 1, characterized in that, The capacitor C1 is a filter capacitor.

8. A high-voltage power supply multiplexing circuit according to claim 1, characterized in that, The capacitor C2 is a filter capacitor.

9. A high-voltage power supply multiplexing circuit according to claim 1, characterized in that, Both diode D1 and diode D2 are Schottky diodes.

10. A method of using a high-voltage power supply multiplexing circuit, characterized in that, A high-voltage power supply multiplexing circuit according to any one of claims 1-9 includes the following steps: Connect the load of high-voltage power supply V3 to the circuit, and disconnect the load of high-voltage power supply V1; turn on high-voltage power supply V3 and low-voltage power supply V2; after high-voltage power supply V3 breaks down the load of high-voltage power supply V3, low-voltage power supply V2 replaces high-voltage power supply V3; disconnect high-voltage power supply V1, connect the load of high-voltage power supply V1 to the circuit; turn high-voltage power supply V1 back on.

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