The use of relay precautions

1, rated working voltage: refers to the voltage required by the coil when the relay is working normally. Depending on the type of relay, it can be AC voltage or DC voltage.

2, DC resistance: refers to the DC resistance of the coil in the relay, which can be measured by a multimeter.

3, the suction current: refers to the minimum current that the relay can produce the suction action. In normal use, the given current must be slightly greater than the draw current for the relay to work stably. For the working voltage added to the coil, generally do not exceed 1.5 times the rated working voltage, otherwise it will produce a large current and burn the coil.

4, release current: refers to the maximum current generated by the relay release action. When the current of the relay is reduced to a certain extent, the relay will return to the unenergized release state.

5, contact switching voltage and current: refers to the voltage and current that the relay allows to load. It determines the size of the voltage and current that the relay can control, and cannot exceed this value when used, otherwise it is easy to damage the contact of the relay. With technology; Refers to the relay coil in the case of loss of current will produce a very high reverse electromotive force, it is easy to damage the control of its electronic devices, in the use of the process must focus on the introduction of absorption circuit in the design circuit.