switch control circuit

And a Visual Basic parallel port control program was used to drive electromagnetical valves through an amplifying circuit. Thus, the switch of gas channels in pneumatic micropump can be controlled.

同时，采用VISUAL BASIC程序语言编制并行接口控制程序，经自行设计的放大电路作用后驱动两位三通电磁阀，实现对气动微泵各气路间的切换的控制。

Overheating prevention circuit-breaker , compressor overload protection, control system overload prevention, breakdown light, high-low compressure protection switch.

电路系统负载保护, 压缩机负载保护, 控制系统负载保护,故障警示灯, 压缩机高低压负载保护.

This article presents analysis and optimized design to electromagnetic locking of automatic switch of the degaussing and electric propulsion control systems of degaussing ship. Further analysis is present on the circuit design and PLC software programming.

文章对消磁船消磁、电力推进控制系统的自动开关电磁闭锁，从电路设计和PLC软件编程等方面进行了分析和优化设计。

The flyback mode switch power supply is chosen as the main circuit of the high voltage power in the paper with 555 pulse control circuit and flyback drive circuit.

选择了反激式开关电源作为高压电源的主电路，并以555脉冲控制电路和反激式驱动电路作为辅助电路。

The circuit is simulated with PSPICE program, and the results indicate that the designed circuit could generate kilo-voltage nanosecond pulse control signal that can match the applications requirement of electro-holographic optical switch well.

利用PSPICE软件对电路进行了仿真，结果显示，利用所设计的电路可产生千伏级的纳秒脉冲控制信号，能较好的满足电控全息光开关的控制需求。

This does not include a push button, selector switch, and other control circuit types devices.

这不包括按钮、选择开关以及其他控制电路类型装置。

Improvement on Protective Lock of Disconnecting Switch and Control Circuit of Circuit Breaker of Transformer Two Terminals

隔离开关的防护锁及变压器两端断路器控制回路的改造

Use relays, contactor, button, air switch and travel switch etc low-voltage constitute control circuit called relay contact control circuit.

使用继电器、接触器、按钮、空气开关、行程开关等低压电器构成的控制电路称为继电接触控制电路。

It Consists of bidirectional switch and zero current switching control technique to achieve on time rectification in the primary circuit. High power factor, high efficency and low THD have been obtained.

电路采用零电流转换方式进行控制，并采用双向开关实现了电路初级的同期整流，从而实现了高功率因子、高效率和低高次谐波的功率因子改善电路。