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DC linear stabilized voltage power supply circuit

A linear regulated power supply and circuit technology, applied in the direction of converting DC power input to DC power output, electrical components, adjusting electrical variables, etc., to achieve the effects of good response, reduced temperature and simple structure

Inactive Publication Date: 2018-03-23
GUANGDONG TRANSTEK MEDICAL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such hysteretic feedback cannot avoid large ripples in the case of high-frequency input changes

Method used

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  • DC linear stabilized voltage power supply circuit
  • DC linear stabilized voltage power supply circuit
  • DC linear stabilized voltage power supply circuit

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Experimental program
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Embodiment Construction

[0029] The DC linear regulated power supply refers to the DC regulated power supply in which the regulating tube works in a linear state. It is a power conversion circuit and an important part of the electronic system. Its function is to provide the electronic circuit with the power it needs. Such as figure 2 Shown is a schematic diagram of a DC linear regulated power supply circuit according to an embodiment of the present invention, including: a current source I, one end of which is used to connect to a voltage source VIN; a Zener diode D1, one end of which is connected to the other end of the current source I One end is connected, the other end is used for grounding GND; and an adjustment transistor Qa connected in parallel to both ends of the current source; wherein the collector of the adjustment transistor is used to connect to the voltage source VIN, and the base is connected to the current source I and Between the zener diode D1, the emitter is the output terminal VOU...

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Abstract

The invention discloses a DC linear stabilized voltage power supply circuit, and the circuit comprises a current source, wherein one end of the current source is connected with a voltage source; a voltage-stabilizing diode, wherein one end of the voltage-stabilizing diode is connected with the other end of the current source, and the other end of the voltage-stabilizing diode is grounded; and a regulation triode which is connected with two ends of the current source in a parallel manner. The collector electrode of the regulation triode is used for connecting the voltage source, the base electrode of the regulation triode is connected between the current source and a voltage stabilizing diode, and the emitter electrode of the regulation triode serves as a stabilized voltage power supply output end. According to the embodiment of the invention, the circuit is simple in structure, and is better in response for high frequency. Meanwhile, the current source is introduced as the reference current of the voltage stabilizing diode, so as to reduce the impact from temperature and an input voltage.

Description

technical field [0001] The invention relates to a power supply, in particular to a DC linear stabilized voltage power supply circuit composed of discrete components. Background technique [0002] The DC linear regulated power supply is generally composed of input and output capacitors, adjustment tubes, and comparison units. The linear regulated power supply mentioned here refers to the DC regulated power supply in which the regulator tube works in a linear state. The linear regulated power supply is a kind of DC regulated power supply used earlier, its output voltage is lower than the input voltage; the response speed is fast, the output ripple is small; the noise generated by the work is low; the efficiency is low and the heat generation (especially large power supply), indirectly adding thermal noise to the system. [0003] In order to solve the problem of low efficiency, there is a commonly used low-dropout regulated power supply (LDO). A general LDO circuit structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M1/14
CPCH02M1/14H02M3/158
Inventor 王恩
Owner GUANGDONG TRANSTEK MEDICAL ELECTRONICS CO LTD