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Far-end and local sampling control circuit for power supply

A remote and local technology, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve problems such as manual manual selection, and achieve the effects of high reliability, improved voltage stability, and simple circuits

Active Publication Date: 2013-04-24
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a remote sampling and local sampling control circuit of the power supply, which solves the problem that remote sampling and local sampling need to be selected manually

Method used

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  • Far-end and local sampling control circuit for power supply
  • Far-end and local sampling control circuit for power supply

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Embodiment Construction

[0012] A remote sampling and local sampling control circuit for a power supply includes: a remote voltage regulation / internal stator circuit 1, a voltage regulation sub-circuit 2, and also includes a local / remote automatic sampling sub-circuit 3. Among them, the local / remote automatic sampling sub-circuit 3 includes: resistor R1~resistor R8, potentiometer RP1, zener tube Z1, zener tube Z2, all components are connected by printed wires; the cathode of zener tube Z1 is connected to the local / The local sampling input positive signal LS+ terminal of the remote automatic sampling sub-circuit 3 is connected, the anode of the Zener tube Z1 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to one end of the resistor R2, the resistor R6, and the resistor R7 to form an equipotential point; The other end of R2 is connected to one end of the potentiometer RP1 and the regulating end, the other end of resistor R6 is grounded, and the other end of r...

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Abstract

The invention discloses a far-end and local sampling control circuit for a power supply. The circuit comprises a given subcircuit (1) and a voltage regulation subcircuit (2), and also comprises a local / far-end automatic sampling subcircuit (3), wherein the local / far-end automatic sampling subcircuit (3) comprises eight resistances (R1-R8), a resistance potentiometer RP1, a stabilivolt Z1 and a stabilivolt Z2 which are connected by a printed wiring, the local / far-end automatic sampling subcircuit (3) provides a feedback signal to the voltage regulation subcircuit (2), the given subcircuit (1) provides a voltage reference signal to the voltage regulation subcircuit (2), and the voltage regulation subcircuit (2) is used to control a power supply. According to the invention, the automatic switching between far-end sampling and local sampling can be realized on the basis of a node current principle. By the adoption of the circuit provided by the invention, automatic stepless switching between the far-end sampling and the local sampling can be realized and voltage at a load end can be stabilized within a set voltage range under the circumstance that the far-end sampling is failed and the far-end voltage regulation signal wire is disconnected.

Description

Technical field [0001] The invention relates to a power sampling control circuit, in particular to a power remote and local sampling control circuit. Background technique [0002] In the power supply application of power supply equipment, in order to keep the voltage of the load power equipment stable, it is often necessary to perform load (remote) sampling control on the power supply equipment. In many cases, the power supply is far away from the electrical equipment, and the remote sampling line is long. It often occurs that the output voltage of the power supply is too high or working abnormally due to the open circuit of the sampling line, causing the electrical equipment to malfunction or even damage. [0003] At present, the remote / local sampling circuit of the power supply is often used. It consists of a remote sampling sub-circuit, a local sampling sub-circuit, a selector switch, a stator circuit and a voltage regulating sub-circuit. Both the remote sampling sub-circuit and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H02J13/00
CPCY02B70/30Y02B90/20Y04S20/12Y04S20/248
Inventor 熊永波
Owner BEIJING MECHANICAL EQUIP INST
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