We will explain the working principle of the relay according to the example. The following figure is a diagram of a relay control bulb. The relay has a normally open contact and a normally closed contact. The movable contact is a common terminal. This is a smart home relay, that is, when the relay c... read more
The role of the car relay, the role of the relay, the relay function is to use the switch to control the relay coil, then the relay working contact is closed or open, the contact is connected to the main line current, and the other end is connected to the electrical appliance to be controlled to ach... read more
1. Signal relay The signal relay is a commonly used device in the automatic control system. It is generally used to turn the circuit on and off. It releases the control command and reflects the status of the device by dropping the card. After the device returns to normal, the signal is released by t... read more
Electromagnetic relays are a common type of electrical equipment in industrial circuits. Many people who choose electromagnetic relays do not understand very well. There are many questions about how to choose good electromagnetic relays. How to choose electromagnetic relays? 1. Select the rated work... read more
Measuring contact resistance Use the resistance file of the universal meter to measure the normally closed contact and the dynamic point resistance, the resistance value should be 0, (the contact resistance value can be measured within 100 milliohms in a more precise way); and the normally open cont... read more
