Drive circuit device for direct-current relay

A technology for DC relays and driving circuits, applied in relays, circuits, electrical components, etc., can solve problems such as error-prone, low efficiency, and injury to workers

Inactive Publication Date: 2020-09-08
58TH RES INST OF CETC
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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 driving circuit device for a DC relay to solve the problems of low efficiency,

Method used

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  • Drive circuit device for direct-current relay
  • Drive circuit device for direct-current relay
  • Drive circuit device for direct-current relay

Examples

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Embodiment 1

[0025] The invention provides a driving circuit device for a DC relay, which is used for a 5V DC relay to switch the state of an integrated circuit board-level verification circuit. The structure of the driving circuit device is as follows figure 1 As shown, it includes a square wave generation unit, an analog-to-digital conversion unit, and a current drive and relay status indication unit. The analog-to-digital conversion unit includes an analog-to-digital conversion chip, combined with some external components and circuits, converts the analog voltage signal into a switch control signal for the relay; the current drive and relay status indication unit includes a Darlington chip, which The current capacity of the digital output signal of the analog-to-digital conversion chip is enhanced to meet the switching requirements of the driving relay; the square wave generation unit includes a flip-flop chip, which generates a square wave as the working clock of the analog-to-digital ...

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Abstract

The invention discloses a drive circuit device for a direct-current relay, and belongs to the technical field of electronic circuits. The drive circuit device comprises a square wave generation unit,an analog-to-digital conversion unit and a current drive and relay state indication unit. The analog-to-digital conversion unit comprises an analog-to-digital conversion chip and is used for converting an analog voltage signal into a switch control signal of the relay in combination with some external components and circuits; the current drive and relay state indication unit comprises a Darlingtontube chip, and the current capability of a digital output signal of the analog-to-digital conversion chip is enhanced, and the requirement of driving the on-off of the relay is met; the square wave generation unit comprises a trigger chip and generates a square wave as a working clock of the analog-to-digital conversion chip. An analog voltage control signal is externally applied to automaticallycontrol the on-off of the relay, automatic switching of the circuit state is realized, the drive circuit device is simple and easy to use, and the operation accuracy and efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a driving circuit device for a DC relay. Background technique [0002] Different test conditions need to be applied during board-level verification of integrated circuits, including power supply voltage, input excitation and output load, so different input conditions constitute different working states of integrated circuits. [0003] At present, most of the different working states of the verification circuit are changed by using jumper caps to short jumper pins or dial switches. There are two problems with this solution. One is that it is inefficient and error-prone, because the state must be switched manually; The second is that when the board is in a high and low temperature environment, it cannot switch the state in real time, because the integrated circuit sometimes needs to verify the performance indicators and functions under extreme temperature conditions. Wh...

Claims

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Application Information

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IPC IPC(8): H01H47/02H01H47/22H01H47/32H01H47/34
CPCH01H47/02H01H47/22H01H47/325H01H47/34
Inventor 程法勇
Owner 58TH RES INST OF CETC
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