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A switch is a switch that controls the main contact through a rotating handle. There are two structural forms of switch switches, namely, unipolar unit structure and multipolar multiple-bit structure. The unipolar unit switching switch is often used in the application with the Rotary potentiometers, Change Over Switch and the multipole multiple switch switch is used for the switching of the working state line. Switch switches can be used to replace the traditional resistive potentiometer analog function of the rotary pulse generator, these switches are usually used in the instrument front panel and Audio-visual control Panel of the Man-machine interface.
Switching switch principle
The switching switch is a kind of multi-shift and control circuit. Switching switches are mainly used in the conversion of various control lines, voltage meter, ammeter commutation measurement control, Change Over Switch distribution device line conversion and remote control. Switching switches can also be used to directly control the start, speed and commutation of small-capacity motors. Toggle Switch single layer structure schematic diagram. Commonly used products have LW5 and LW6 series. LW5 series can control 5.5kW and below the small capacity motor; Change Over Switch The LW6 series can only control small capacity motors with 2.2kW and below. For reversible operation control, the reverse start is only allowed when the motor is parked. LW5 Series switching switches can be divided into two types: self-duplex and self-positioning mode. The so-called self-duplex refers to the hand when the handle to a certain stall, Change Over Switch when the hand is released, the handle automatically return to the original position; The positioning type is that when the handle is placed in a stall, it cannot automatically return to its original position and stop at the stall.
Toggle switch Structure
Structural features: Common band switches and multimeter shift switches are switching switches, the structure of the two: one is BBM (breakbeforemake) contact type, which is characterized by the transposition of the first contact when the contact is disconnected before connecting the contact, Change Over Switch There is a state that is disconnected from the front and back points: the other is the MBB (makebeforebreak) contact type, which is characterized by having a state of contact with the front and rear contacts during the transposition. Then disconnect the front contact and maintain contact with the rear contact. In the circuit design should be based on circuit use and circuit security to select the appropriate switch.
Switch switch is also called the combination switch, Change Over Switch it is not the same as other switches, it is mainly around the rotation of the plane operation. It is also a two-way or two-way power supply or load conversion of the switch, mainly by the combination of multiple contacts, generally with multiple positions, small size, reliable performance, easy to operate, flexible installation and other advantages.
The contact system of the switching switch is composed of a number of movable contacts in the static contact head seat and movable bracket embedded in the insulating shell. The contact head is a two-breakpoint butt-type bridge, on the hinge with the handle, Change Over Switch and the circuit is connected or disconnected with the rotating shaft to different positions. The positioning mechanism adopts the wheel ratchet structure, and the different limit parts are configured to obtain the switch of different gear.
Switching switch can be used as circuit control switch, test equipment switch, motor control switch and main control switch, and switch switch of welding machine. Its application is very extensive, Change Over Switch generally is mainly used in all kinds of household appliances switch, such as: electric fans, microwave ovens and other commonly used electrical equipment.
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