what is the difference between a car relay and a fuse?-买球软件

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automotive relays and fuses have a common feature, both for safety, and the lack of understanding of circuit components, so some people are not very clear about the difference between the two. everyone can distinguish in appearance, and more is not understanding the principle of action. let me talk about the difference between car relays and fuses.

an automotive relay is an electrical control device that is an electrical device that causes a predetermined step change in the controlled output quantity in an electrical output circuit when the change in the input amount (excitation amount) reaches a prescribed requirement. it has an interaction between the control system (also known as the input loop) and the controlled system (also known as the output loop). a "automatic switch" that is typically used in automated control circuits to control large currents with small currents. therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.

when a circuit malfunctions or is abnormal, the current is constantly rising, and the increased current may damage some important devices or valuable devices in the circuit, and may also burn the circuit or even cause a fire. if a fuse is installed in the circuit, the fuse will cut off the current when the current abnormally rises to a certain height and heat, thereby protecting the safe operation of the circuit.

automotive relays control large currents with small currents, thus avoiding the danger of human exposure to high currents (high voltages). the fuse is when the circuit is abnormal, the current is abnormally increased, the fuse is cut off, and the electric appliance is protected, which may cause a fire.

previous：what is the operating voltage of a car relay?

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: automotive relays and fuses have a common feature, both for safety, and the lack of understanding of circuit components, so some people are not very clear about the difference between the two. everyone can distinguish in appearance, and more is not understanding the principle of action. let me talk about the difference between car relays and fuses. an automotive relay is an electrical control device that is an electrical device that causes a predetermined step change in the controlled output quantity in an electrical output circuit when the change in the input amount (excitation amount) reaches a prescribed requirement. it has a control system (also known as an input loop) and a controlled system (also known as an output back)

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