Working principle of automobile relayPostTime: 2022-11-01 Views: 678 |
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Working principle of automobile relay
When a certain voltage or current is applied to both ends of the coil of the electromagnetic relay, the magnetic flux generated by the coil passes through the magnetic circuit composed of the iron core, yoke, armature and the working air gap of the magnetic circuit. Under the effect of the magnetic field, the armature attracts to the pole of the iron core, thus pushing the normally closed contact of the contact to open and the normally open contact to close; When the voltage or current at both ends of the coil is less than a certain value, and the mechanical reaction is greater than the electromagnetic attraction, the armature returns to the initial state, the normally open contact is disconnected, and the normally closed contact is connected. |
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