A kind of 8W fluorescent lamp with a key switch has been used for a long time, and the switching performance is unstable. The main reason is that the contact reed of the switch is loose. By adding a compression spring to the contact spring, the pressure between the contact springs is improved, and the reliability of the switch is enhanced.

What is the key switch _ key switch schematic

The process of installing a compression spring is simple. First, take a copper or steel sheet with a thickness of 0.3 to 0.5 mm. Make two pieces according to the size, and cut the two ends into a circular arc shape. Use a file to pull one of the ends out. Then use a needle-nosed pliers and align one end of the cutting edge with the joint of the key switch and the contact spring, and insert it with a little force. It is easier to heat the pressure spring on the soldering iron first and then insert it.

Care must be taken during the production process to not damage the switch base. With the thus-repaired key switch, the contact reed is more reliable in use under the pressure of the compression spring.