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About Us

Dongguan Shengjun Electronic Co., Ltd. originated in Taiwan and specializes in the design and production of various safety regulation power switches and current and temperature dual protection switches. The technical engineers and quality engineers of the factory have more than 12 years of experience in the switch industry. The factory has passed the ISO9000-2015 quality management system and has its own testing laboratory. At present, the main products are rotary switch, push switch, tip over switch, rocker switch, it’s an ideal switch supplier for various manufacturers of household appliances, mechanical equipment, medical equipment, electric tools, new energy electric vehicles, office equipment etc.

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What are the common uses of rotary switches?

What are the common uses of rotary switches?

Knob switch is a common electronic switch, which mainly consists of a knob, switch mechanism, and fixed base. The working principle of a rotary switch is to rotate the knob to connect or disconnect the internal switch mechanism from the circuit, in order to achieve electrical switch control.

Working principle of rotary switch

Working principle of rotary switch

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 of wire turns. The principle is similar to that of a potentiometer, which usually consists of a resistor and a movable brush.