The purpose and classification of the control relay is an automatic electrical appliance. It is suitable for long-distance connection and disconnection of AC and DC small-capacity control circuits and is used for control, protection, and signal conversion in electric drive systems. The input quantit... read more
A relay is an electrical control device. It is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirement. There are many types of relays, t... read more
Circuit board relay is a miniaturized electronic control device, in which the circuit board makes the circuit miniaturized and intuitive, which plays an important role in the mass production of fixed circuits and optimizing the layout of electrical appliances. The relay has a control system (also c... read more
How to choose the power relay correctly, which is divided into 4 steps, I hope it will be helpful to everyone's study. 1. Measuring contact resistanceUse the resistance file of the universal meter to measure the resistance of the normally closed contact and the moving point. The resistance value sho... read more
The structure and working principle of an electromagnetic relay are similar to that of a contactor, mainly composed of an electromagnetic mechanism and contacts. Electromagnetic relays are also available in DC and AC. The suction value and release value of the relay can be adjusted within a certain ... read more
What is the relay used for? Relay is a kind of protection element, an automatic switching element with isolation function. The relay can be used for switching, breaking, and connecting multiple circuits, which can expand the control range. With sensitive relays and intermediate relays, high-power ci... read more
Micro SwitchThe switch panel and the raised button connected with the switch panel are characterized in that the button is connected to the panel through arc-shaped connecting strips on both sides thereof; the button, the connecting strip, and the panel are preferably integrated injection molding, T... read more
Car relays get hot. From the perspective of physics, it is a process in which heat is generated by mechanical motion, and mechanical energy is converted into heat. This is a normal phenomenon. This is why a radiator is installed in many machines. A lot of heat is generated during the movement of the... read more
Accurately three-phase relay measure the ground impedance, ground resistance, and ground reactance of a large grounding network Potential; measure the on-resistance of the down conductor; measure the soil resistivity. The most important thing is to measure whether the resistance of the ground pole t... read more
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