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What do you need to pay attention to when using automotive relays?


1, rated working voltage: refers to the voltage required by the coil when the automotive relay is working normally. Depending on the type of automotive relay, it can be either AC or DC voltage.
2. Dc resistance: refers to the DC resistance of the coil in the automotive relay, which can be measured by a multimeter.
3. Drawing current: It refers to the minimum current that the automotive relay can produce. In normal use, the given current must be slightly greater than the draw current for the automotive relay to work steadily. The working voltage added to the coil, generally do not exceed 1.5 times of the rated working voltage, otherwise it will produce a large current and burn the coil.
4. Release current: It refers to the maximum current generated by the release action of the automotive relay. When the current of the automotive relay is reduced to a certain degree, the relay will return to the unenergized release state. The current is much less than the suction current.

5. Contact switching voltage and current: refers to the voltage and current that the automotive relay allows to load. It determines the size of the voltage and current that the automotive relay can control. It can not exceed this value when used, otherwise it is easy to damage the contact of the automotive relay. With technology; When the coil in the automotive relay loses current, it will produce a very high reverse electromotive force, which is easy to damage the electronic devices that control it. In the process of use, it is important to consider the introduction of absorption circuit in the design circuit.


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