High-power adjustable voltage-stabilized power supply manufactured by reference voltage source

A reference voltage source and high-power technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problem of low power conversion efficiency, difficulty in stabilizing power supply, large loss of adjustment tube, etc. question

Inactive Publication Date: 2011-09-14
黄宇嵩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the adjustment tubes in high-power series adjustable regulated power supplies mostly used high-power silicon transistors or germanium transistors. The main disadvantages are that the loss of the adjustment tubes is large, and it is difficult to produce a regulated power supply with high output current, resulting in low power conversion efficiency.

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  • High-power adjustable voltage-stabilized power supply manufactured by reference voltage source
  • High-power adjustable voltage-stabilized power supply manufactured by reference voltage source

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Embodiment Construction

[0018] The present invention can be realized by implementing the working principle diagram of the circuit of the high-power adjustable regulated power supply made with the reference voltage source shown in the accompanying drawings, the description of the accompanying drawings and the technical requirements of the components described below.

[0019] Selection of components and their technical parameters

[0020] QZ is a full-bridge rectifier element, requiring a working current ≥ 10A;

[0021] IC1 is a three-terminal adjustable shunt reference voltage source, model TL431, package type T0-92, the pins are: R pin is the reference terminal, A pin is the positive pole, and K pin is the negative pole; the two ends of the positive pole A pin and the negative pole K pin The output voltage is continuously adjustable within the range of 2.5-36V, the wide working current range is 0.1-100mA, and the typical dynamic resistance is 0.2Ω;

[0022] BG1 is an enhanced N-channel high-power an...

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Abstract

The invention belongs to the technical fields of electronics and power supplies and discloses a high-power adjustable voltage-stabilized power supply manufactured by a reference voltage source. The voltage-stabilized power supply consists of an alternating current (AC) transformer B and a full-bridge rectifying circuit, a half-wave rectifying and filtering circuit, an adjusting tube BG1, a sampling amplifying circuit, a current-limiting protection circuit and a voltage-dividing and sampling circuit, and is characterized in that: the sampling amplifying circuit consists of a three-end adjustable current-dividing reference voltage source IC1 and a resistor R1; the adjusting tube BG1 is an enhanced N-channel high-power field-effect tube; the current-limiting protection circuit consists of a silicon triode BG2 and a current sampling resistor R2; and the voltage-dividing and sampling circuit consists of a potentiometer RP and a voltage-dividing resistor R3. The adjustable voltage-stabilized power supply outputs heavy current and adjustable voltage, the circuit has an overcurrent protection function, and particularly the conversion efficiency and working reliability of the adjustable voltage-stabilized power supply are improved.

Description

technical field [0001] The invention belongs to the technical field of electronics and power supply, and relates to a high-power adjustable voltage-stabilized power supply made of a reference voltage source. Background technique [0002] High-power adjustable regulated power supply is a necessary equipment for general circuit designers or laboratories. In the past, high-power silicon transistors or germanium transistors were mostly used as regulator tubes in high-power series adjustable regulated power supplies. The main disadvantages are that the regulator tubes have large losses and it is difficult to manufacture regulated power supplies with high output currents, resulting in low power conversion efficiency. In order to solve or make up for various shortcomings of some adjustable regulated power supplies on the market, the high-power adjustable regulated power supply made of the reference voltage source according to the present invention adopts a high-precision three-term...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M1/32
Inventor 黄宇嵩
Owner 黄宇嵩
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