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本文介绍一种新颖电接点控制线路,它由一块555时基集成电路和少量电子元器件所组成,和以往通常需要三个执行元件(继电器)作为中间放大环节实现区间控制的电路相比较,有以下几个优点: 1)电路的输出端只需一个执行元件即双向晶闸管,它既价廉又是无触点开关,电气性能优于继电器。 2)电接点在工作中其触点所通过的电流极小,实
This article describes a novel electrical contact control circuit, which consists of a 555-time integrated circuit and a small amount of electronic components, and in the past usually require three actuators (relays) as the intermediate amplification section to achieve interval control circuit compared to the The following advantages: 1) the output of the circuit only one executive component that is bi-directional thyristor, it is inexpensive and non-contact switch, the electrical performance is better than the relay. 2) electrical contacts in the work of its contacts through the current is very small, real