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Self-locking and interlocking switch with multiple grades

An interlocking switch and self-locking technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve the problems of large size, easy wear, and slow switching speed.

Inactive Publication Date: 2013-04-24
陈子杨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Automatic control circuits often use self-locking interlock switches. The disadvantages of mechanical self-locking interlock switches are large size, high operating costs, slow switching speed, easy to wear, and not easy to use in combination with digital circuits.

Method used

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  • Self-locking and interlocking switch with multiple grades

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Embodiment Construction

[0013] According to attached figure 1 The present invention can be realized by implementing the working principle diagram of the circuit shown and the description of the accompanying drawings and the technical requirements described below.

[0014] Technical parameters and selection of components

[0015] IC1 is an operational amplifier, and the selected model is LM324. It 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;

[0016] The package of LM324 integrated circuit is dual-in-line, and its 14 pins and functions are: 1 pin OUTPUT 1, 2 pins INPUT 1-, 3 pins INPUT 1+; 4 pins are connected to the positive pole of the power supply; 5 pins INPUT 2+, 6-pin INPUT 2-, 7-pin OUTPUT 2; 8-pin OUTPUT 3, 9-pin INPUT 3-, 10-pin INPUT 3+; 11-pin connected to circuit ...

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PUM

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Abstract

The invention provides a self-locking and interlocking switch with multiple grades. The self-locking and interlocking switch with multiple grades has the technical characteristics that the multiple grade switch of self-locking and interlocking is composed of a 12 voltage direct current source, operation amplifier integrated circuits (IC) 1, an output voltage even division circuit, and a direct current source voltage division circuit. The model of the operation amplifier IC1 is LM324. Each operation amplifier IC1 can form a self-locking and interlocking switch circuit with 4 grades. The structure of each grade self-locking and interlocking switch circuit is the same. Components and connection feature of a second grade and other grade self-locking and interlocking switch circuits are identical with components and connection feature of a first self-locking and interlocking switch circuit. According to the multiple self-locking and interlocking switch, defaults of mechanical self-locking and interlocking switch are overcome. Due to the fact that input impedance of the operational amplifier is high, input current of key switch is minimal, input and output electrical level of the switch meet the requirement of interface electrical level of a digital circuit, and the multiple grade switch of self-locking and interlocking can share work power source with the digital circuit. The multiple grade switch of self-locking and interlocking is characterized in that application range of voltage is wide, and grade can be arbitrarily designed.

Description

technical field [0001] The invention belongs to the field of electronic technology and automatic control, and relates to a multi-level self-locking and interlocking switch. Background technique [0002] Automated control circuits often use self-locking interlock switches. The disadvantages of mechanical self-locking interlock switches are large size, high operating costs, slow switching speed, easy to wear, and not easy to use in combination with digital circuits. [0003] The multi-speed self-locking and interlocking switch of the present invention overcomes many defects of the mechanical self-locking and interlocking switch. The core component of the circuit adopts four operational amplifier integrated circuits LM324, which are specially designed so that each group of operational amplifiers has dual functions of a voltage comparator and a Schmitt trigger. Due to the high input impedance of the operational amplifier, the input current of the key switch is extremely small, ...

Claims

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Application Information

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IPC IPC(8): G05B19/04
Inventor 陈子杨
Owner 陈子杨
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