CN213182461U - DC voltage-stabilized power supply driving circuit - Google Patents

DC voltage-stabilized power supply driving circuit Download PDF

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Publication number
CN213182461U
CN213182461U CN202022391327.XU CN202022391327U CN213182461U CN 213182461 U CN213182461 U CN 213182461U CN 202022391327 U CN202022391327 U CN 202022391327U CN 213182461 U CN213182461 U CN 213182461U
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China
Prior art keywords
circuit
voltage
pnp triode
drive circuit
driving circuit
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CN202022391327.XU
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Chinese (zh)
Inventor
王明先
张广杰
李松青
狄锐
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Huaneng Zuoquan Coal Power Co ltd
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Huaneng Zuoquan Coal Power Co ltd
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Abstract

The utility model relates to a DC voltage-stabilized power supply drive circuit belongs to electronic circuit technical field, connects the output side at frequency division transformer, frequency division transformer is three-phase frequency division transformer T1, and this DC voltage-stabilized power supply drive circuit still includes that the input connects opposite positive drive circuit and negative drive circuit, positive drive circuit includes steady voltage filter circuit and discharge circuit, steady voltage filter circuit's input is connected three-phase frequency division transformer T1's output side a, steady voltage filter circuit's output is connected discharge circuit's input, discharge circuit's output connection load, negative drive circuit's inner structure is the same with positive drive circuit, negative drive circuit's input is connected three-phase frequency division transformer T1's output side b. The method has the characteristics of high stability, convenience, energy conservation and high fault-tolerant rate.

Description

DC voltage-stabilized power supply driving circuit
Technical Field
The utility model belongs to the technical field of electronic circuit, a drive circuit is related to, specifically is direct current constant voltage power supply drive circuit.
Background
The DC stabilized voltage supply is used for providing DC stabilized voltage output, converting the DC voltage into DC voltage through AC, converting the DC voltage into high-frequency AC voltage through DC inversion, rectifying and stabilizing the voltage, and finally outputting the stabilized voltage. The driving circuit converts the power supply into a specific voltage and current to drive the following circuits to work.
The existing driving circuit is single-path driving, has the characteristics of single function and inconvenient application, can be directly damaged when a fault occurs, has low fault tolerance rate, and is not suitable for being applied to the key field.
Disclosure of Invention
The utility model discloses a solve above-mentioned problem, designed direct current constant voltage power supply drive circuit, it is high to have stability, and is convenient, energy-conserving, characteristics that the fault-tolerant rate is high.
The utility model discloses a concrete technical scheme is:
direct current regulated power supply drive circuit connects at frequency division transformer's output side, frequency division transformer is three-phase frequency division transformer T1, and this direct current regulated power supply drive circuit still includes that the input connects opposite positive drive circuit and negative drive circuit, positive drive circuit includes voltage stabilizing filter circuit and discharge circuit, voltage stabilizing filter circuit's input is connected three-phase frequency division transformer T1's output side a, voltage stabilizing filter circuit's output is connected discharge circuit's input, discharge circuit's output connection load, negative drive circuit's inner structure is the same with positive drive circuit, negative drive circuit's input is connected three-phase frequency division transformer T1's output side b.
The voltage stabilizing filter circuit comprises a resistor R1, a capacitor C1 and a transient suppression diode D1, wherein the resistor R1 and the capacitor C1 are connected to two ends of the output side a of the three-phase frequency-dividing transformer T1 in series, the transient suppression diode D1 is connected with the resistor R1 and the capacitor C1 in series in parallel, and two ends of the transient suppression diode D1 are respectively used as a positive output end and a negative output end to be connected with the input end of the discharge circuit.
The discharge circuit comprises a PNP triode Q1, diodes D2 and D3 and a resistor R2,
the base of PNP triode Q1 is as discharge circuit's positive input end, PNP triode Q1's base process diode D2 connects the projecting pole of PNP triode, the base of PNP triode is connected diode D2's positive pole, PNP triode Q1's collecting electrode passes through diode D3 and is regarded as discharge circuit's negative input end, PNP triode Q1's base is regarded as through resistance R2 PNP triode Q1's negative input end, PNP triode Q1's projecting pole is regarded as discharge circuit's output connection load circuit.
The utility model has the advantages that:
the invention uses a positive and negative pulse signal, two outputs are adopted to respectively generate a positive pulse and a negative pulse, the two positive and negative pulses are not used for driving two switching tubes which are connected in series, and the two switching tubes can not be conducted simultaneously and are always in an alternate conducting state. The energy and the cost are saved, the condition that the subsequent circuits are not conducted simultaneously and danger occurs is also ensured, and the safety performance is improved. The structural design of this application is simple, and components and parts are also simple general, benefit in realizing.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following specific embodiments and accompanying drawings, but the scope of protection and the implementation of the present invention are not limited thereto.
Direct current regulated power supply drive circuit connects at frequency division transformer's output side, frequency division transformer is three-phase frequency division transformer T1, and this direct current regulated power supply drive circuit still includes that the input connects opposite positive drive circuit and negative drive circuit, positive drive circuit includes voltage stabilizing filter circuit and discharge circuit, voltage stabilizing filter circuit's input is connected three-phase frequency division transformer T1's output side a, voltage stabilizing filter circuit's output is connected discharge circuit's input, discharge circuit's output connection load, negative drive circuit's inner structure is the same with positive drive circuit, negative drive circuit's input is connected three-phase frequency division transformer T1's output side b.
In a dc voltage-stabilized power supply, a pulse voltage is required to output two opposite pulse signals to control the operation of two switching tubes, so that the two switching tubes are not turned on or off simultaneously, which is very important for the design of a driving circuit. According to the scheme, two pulse voltage signals which are completely opposite can be generated by one pulse voltage first, and the accuracy of the driving circuit is improved.
As shown in fig. 1, the voltage stabilizing filter circuit includes a resistor R1, a capacitor C1 and a transient suppression diode D1, the resistor R1 and the capacitor C1 are connected in series across the output side a of the three-phase frequency-dividing transformer T1, the transient suppression diode D1 is connected in parallel with the resistor R1 and the capacitor C1 which are connected in series, and two ends of the transient suppression diode D1 are respectively connected as a positive output end and a negative output end to the input end of the discharge circuit.
The resistor R1 and the capacitor C1 play a role in filtering, noise interference can be eliminated, the input of a rear-stage circuit is more stable, the transient suppression diode D1 plays a role in stabilizing voltage, the output of voltage is guaranteed within a certain range, components in a rear circuit are prevented from being damaged, the capacitor C1 can effectively eliminate sudden change of voltage and eliminate overvoltage of peak voltage, the resistor R1 is used for consuming energy of the overvoltage and can play a role in suppressing voltage oscillation, the subsequent circuit can effectively work more stably, the transient suppression diode D1 is selected according to working voltage parameters of electronic elements in the subsequent circuit and is slightly larger than or equal to the working voltage parameters, the voltage in the circuit cannot be too high, and the service life and the normal work of the elements are influenced.
As shown in fig. 1, the discharge circuit includes a PNP transistor Q1, diodes D2 and D3, and a resistor R2,
the base of PNP triode Q1 is as discharge circuit's positive input end, PNP triode Q1's base process diode D2 connects the projecting pole of PNP triode, the base of PNP triode is connected diode D2's positive pole, PNP triode Q1's collecting electrode passes through diode D3 and is regarded as discharge circuit's negative input end, PNP triode Q1's base is regarded as through resistance R2 PNP triode Q1's negative input end, PNP triode Q1's projecting pole is regarded as discharge circuit's output connection load circuit.
The resistance value of the resistor R2 in the discharge circuit is selected according to the capacitance of the capacitor of the transistor junction in the subsequent circuit, the capacitance of the subsequent junction in the circuit is about 1000P, the voltage of the output two ends is about 12V, the circuit frequency is 50KHZ, the resistance value is calculated to be about 12K ohm, but the output capability of the previous circuit is influenced due to the overlarge resistance value of the resistor R2 is about 1K ohm.

Claims (3)

1. The direct-current stabilized power supply driving circuit is connected to the output side of the frequency-dividing transformer, and is characterized in that the frequency-dividing transformer is a three-phase frequency-dividing transformer T1, the direct-current stabilized power supply driving circuit further comprises a positive driving circuit and a negative driving circuit, the input end of the positive driving circuit is connected with the opposite positive driving circuit and the negative driving circuit, the input end of the positive driving circuit comprises a voltage-stabilizing filter circuit and a discharge circuit, the input end of the voltage-stabilizing filter circuit is connected with the output side a of the three-phase frequency-dividing transformer T1, the output end of the voltage-stabilizing filter circuit is connected with the input end of the discharge circuit, the output end of the discharge circuit is connected with a load, the internal structure of the negative driving circuit is the same as.
2. A dc regulated power supply drive circuit according to claim 1, wherein: the voltage stabilizing filter circuit comprises a resistor R1, a capacitor C1 and a transient suppression diode D1, wherein the resistor R1 and the capacitor C1 are connected to two ends of the output side a of the three-phase frequency-dividing transformer T1 in series, the transient suppression diode D1 is connected with the resistor R1 and the capacitor C1 in series in parallel, and two ends of the transient suppression diode D1 are respectively used as a positive output end and a negative output end to be connected with the input end of the discharge circuit.
3. A dc regulated power supply drive circuit according to claim 2, wherein: the discharge circuit comprises a PNP triode Q1, diodes D2 and D3 and a resistor R2,
the base of PNP triode Q1 is as discharge circuit's positive input end, PNP triode Q1's base process diode D2 connects the projecting pole of PNP triode, the base of PNP triode is connected diode D2's positive pole, PNP triode Q1's collecting electrode passes through diode D3 and is regarded as discharge circuit's negative input end, PNP triode Q1's base is regarded as through resistance R2 PNP triode Q1's negative input end, PNP triode Q1's projecting pole is regarded as discharge circuit's output connection load circuit.
CN202022391327.XU 2020-10-23 2020-10-23 DC voltage-stabilized power supply driving circuit Active CN213182461U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022391327.XU CN213182461U (en) 2020-10-23 2020-10-23 DC voltage-stabilized power supply driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022391327.XU CN213182461U (en) 2020-10-23 2020-10-23 DC voltage-stabilized power supply driving circuit

Publications (1)

Publication Number Publication Date
CN213182461U true CN213182461U (en) 2021-05-11

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CN202022391327.XU Active CN213182461U (en) 2020-10-23 2020-10-23 DC voltage-stabilized power supply driving circuit

Country Status (1)

Country Link
CN (1) CN213182461U (en)

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