Relay control circuit and power supply

A relay control and relay technology, applied in relays, circuits, electrical components, etc., can solve the problem of high energy loss

Pending Publication Date: 2019-04-19
长城电源技术广西有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a relay control circuit and a power supply, aiming to solve t...

Method used

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  • Relay control circuit and power supply
  • Relay control circuit and power supply
  • Relay control circuit and power supply

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] figure 1 A schematic diagram of the module of the relay control circuit provided by the preferred embodiment of the present invention is shown. For the convenience of description, only the parts related to this embodiment are shown, and the details are as follows:

[0019] refer to figure 1 , a kind of relay control circuit, is connected with the coil of relay, is used for controlling start-up and shut-off relay, and this relay control circuit comprises: power supply module 10, absorption module 20, reset module 30, control module 60, first drive module 40 and The second driving module 50 ...

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Abstract

The invention provides a relay control circuit. The relay control circuit includes a power supply module, an absorbing module, a reset module, a control module, a first driving module and a second driving module, wherein the power supply module outputs a power signal; the absorbing module absorbs the peak leakage inductance voltage generated when a coil is turned off; the reset module reduces thecurrent passing by the coil and the peak leakage inductance energy generated when the coil is turned off after the relay is started, so as to reset the coil; the control module outputs a first switchcontrol signal and a second switch control signal; the first driving module turns on the coil according to the first switch control signal to control the start of the relay, and is turned off according to the first switch control signal after the relay is started; the second driving module is activated according to the second switch control signal after the relay is started, so as to enable the relay to maintain in a working state; and after the relay is started, the current passing by the coil is controlled to be reduced through the second driving module and the reset module to maintain the startup state, thereby saving the energy being unnecessary to consume after the relay is started.

Description

technical field [0001] The invention belongs to the technical field of relays, in particular to a relay control circuit and a power supply. Background technique [0002] At present, the relay control circuit applies the drive voltage directly to the coil of the relay, and controls the on-off of the drive voltage through the switch tube to realize the control of the switch of the relay. Specifically: when the switch tube is turned on, the drive voltage is directly applied to the coil to Make the switch of the relay close, and continue to maintain the driving voltage after the relay is closed. When the switch tube is disconnected, turn off the driving voltage applied to the coil to disconnect the switch of the relay; that is, the existing relay control circuit In the control mode of the relay switch, the two ends of the coil of the relay always maintain the same driving voltage at the moment of pull-in and after the pull-in, so that the energy consumed by the relay at the mome...

Claims

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Application Information

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IPC IPC(8): H01H47/00H01H47/02H01H47/22
CPCH01H47/00H01H47/02H01H47/22
Inventor 朱毅刘祖贵苟霜陈学林
Owner 长城电源技术广西有限公司
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