![]() ![]() Therefore, it plays the role of automatic adjustment, safety protection, and conversion in the circuit. Usually used in automated control circuits, it is actually an " automatic switch" that uses a small current to control the operation of a large current. ![]() Electrical relay has an interactive relationship between the control system (also called the input loop) and the controlled system (also called the output loop). It makes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the input quantity (excitation quantity) changes to the specified requirements. ![]()
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