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Electronic self-locking/interlocking switch

An interlock switch, electronic technology, applied in the application field of electronic technology, can solve the problems of difficult digital circuit matching, large volume, low switching speed, etc.

Inactive Publication Date: 2011-07-27
黄宇嵩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Self-locking interlock switches are widely used in electrical appliances, instruments and automation control. The disadvantages of mechanical self-locking interlock switches are: large size, large touch force, low switching speed, easy to wear, and not easy to use with digital circuits.

Method used

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  • Electronic self-locking/interlocking switch
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Examples

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Embodiment Construction

[0017] The present invention can be realized by implementing the working principle diagram of the circuit shown in the accompanying drawings and the description of the accompanying drawings and the technical requirements described below.

[0018] Component parameters and selection

[0019] 1. IC1 recommends using LM324 integrated circuit, which is a circuit composed of four independent operational amplifiers. It can work in a wide single power supply voltage range, and can also work in dual power supply conditions. The power supply voltage working range: Single power supply 3V~30V, dual power supply ±1.5V~±15V.

[0020] The package of LM324 integrated circuit is dual in-line, and its 14 pins and functions are:

[0021] 1 pin OUTPUT 1, 2 pins INPUT 1-, 3 pins INPUT 1+; 4 pins connected to the positive pole of the power supply (VCC); 5 pins INPUT 2+, 6 pins INPUT 2-, 7 pins OUTPUT 2;

[0022] 8-pin OUTPUT 3, 9-pin INPUT 3-, 10-pin INPUT 3+; 11-pin connected to the circuit grou...

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Abstract

The invention pertains to the field of electronic technology application, and relates to an electronic self-locking / interlocking switch which comprises a direct-current power supply, a key switch (AN), a voltage comparison and Schmidt trigger circuit, an output level bleeder circuit and a direct-current power bleeder circuit; and the electronic self-locking / interlocking switch is characterized in that the voltage comparison and Schmidt trigger circuit adopts an operational amplifier, the model of integrated circuits is LM324, each integrated circuit can form a 4-gear self-locking / interlocking switch, and the circuit structures of all the self-locking / interlocking switches are the same. The operational amplifier has higher input impedance; the input current of the key switch is extremely low; the electronic self-locking / interlocking switch is characterized by wide application range of working voltage, arbitrarily designed gear and the like, and can be matched with a digital circuit and share one power supply; and the input / output level of the switch meets the requirement on connector level and the like of the digital circuit. In the circuit, a touch switch, a conductive rubber, a film switch or the like can be used as the key switch; and the electronic self-locking / interlocking switch has wide application in the fields of home appliance, industrial automation and light-machine-electricity integration.

Description

technical field [0001] The invention belongs to the application field of electronic technology and relates to an electronic self-locking interlock switch. Background technique [0002] Self-locking interlock switches are widely used in electrical appliances, instruments and automation control. The disadvantages of mechanical self-locking interlock switches are: large size, large touch force, low switching speed, easy to wear, and not easy to use with digital circuits. . [0003] In order to overcome the inherent defects of the existing mechanical self-locking interlock switch, it is necessary to study and manufacture a general-purpose electronic self-locking interlock switch device. [0004] The electronic self-locking interlock switch of the present invention can well overcome various defects of the mechanical self-locking interlock switch. The core component of the switch is four operational amplifiers LM324, which are cleverly designed so that each group of operational ...

Claims

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Application Information

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IPC IPC(8): H03K17/567
Inventor 黄宇嵩
Owner 黄宇嵩
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