What will happen if the tube of the high frequency machine is damaged?

When the electron tube damages the machine, the following situations will occur:

1, high frequency without high frequency, the machine can't work.

2. The product is pressed, so it can't fit.

3. There is no anode current when the machine works.

4. The electron tube light doesn't work.

5, gate resistance short circuit, etc.

Generally speaking, there is no problem with electron tubes, but with the aging of high-frequency machines, problems are inevitable.

The working principle of electron tube is to emit electrons after the cathode is heated. Because the filament is often impacted by cold current at the moment of starting, the power supply voltage is unstable, and the normal life of the filament will be affected to some extent. Especially the change of filament voltage will affect the cathode temperature. If the power supply voltage is too high and the cathode temperature is too high, part of the oxide layer on its surface will evaporate, which will reduce the electron emission ability and lead to the aging of the electron tube; If the power supply voltage is too low and the cathode is not heated enough, the anode positive electric field will violently impact the cathode, which will also cause chronic poisoning and failure of the cathode.