Solenoid valve covers knowledge including:
1, electromagnetic principle: electromagnetic induction, electromagnetic force and electromagnetic wave.
2, circuit principle: current, voltage and resistance and the basic composition and working principle of the circuit.
3, control system: open loop control and closed loop control.
4, hydraulic and pneumatic system: the basic principle and composition of hydraulic transmission and pneumatic transmission.
5, automation technology: including sensors, actuators and controllers.
Cylinder commonly used solenoid valve classification standards, the most commonly used classification standards are divided according to the operation of the solenoid valve, including:
1, two two-way solenoid valve: two working positions and two channels, through the electromagnetic control to achieve the switch between the two positions.
2, two-position three-way solenoid valve: two working positions and three channels, to achieve the switch between two positions, and can connect or cut off an additional channel.
3, three-position two-way solenoid valve: three working positions and two channels to achieve switching between two positions, and can be connected or cut off with an additional channel.
4, three-position three-way solenoid valve: three working positions and three channels, to achieve switching between two positions, and can be connected or cut off with two additional channels.
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