China Electronic Switch Manufacturer, Supplier, Factory

Electronic switch is a kind of electronic equipment that can control the current breakage, which realizes the connection and disconnection of the circuit through the switching characteristics of electronic components (such as transistors, field effect tubes, etc.). Electronic switch has the advantages of small size, light weight, long life, high reliability, fast switching speed, etc. It is widely used in a variety of electronic equipment, such as computers, communication equipment, household appliances and so on.

Principle of operation

The operating principle of electronic switches is based on the switching characteristics of semiconductor devices. Take a transistor for example, when the base current changes, the current between the collector and emitter will also change, thus realizing the on-off control of the circuit. When the base current is zero, the transistor is in the cut-off state, there is almost no current flowing between the collector and the emitter, and the circuit is broken; when the base current increases to a certain level, the transistor enters the saturation state, there is a larger current flowing between the collector and the emitter, and the circuit is turned on.