Within a certain range, the resistance value is changed, and then there is a contact switch, which is the switch for old-fashioned televisions and radios. For fans, there are several gears, and several sets of lead wires from the fan winding are connected to change the speed by changing the number o......
Read MoreRotary switch is a common electronic switch, which mainly consists of a handle, switch cover, and base. The working principle of a rotary switch is to rotate the handle to connect or disconnect the internal switch mechanism from the circuit, in order to achieve electrical switch control.
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