Application of microwave oven diodes

With people's continuous pursuit of high-quality lifestyle, microwave ovens have entered thousands of households. Microwave ovens play an important role in people's daily lives, and microwave oven diodes are an important part of microwave ovens. So what is a microwave diode? How does it change after it fails?

　　Microwave oven diodes

A microwave diode is a diode that operates in the microwave band. It belongs to the solid-state microwave device. The microwave band generally refers to frequencies from 300 MHz to 3000 GHz. Various diodes in the microwave field, including varactor diodes, step diodes, PIN diodes, limiting diodes, electrically modulated varactor diodes, solid-state noise diodes, and avalanche diodes. Various microwave diodes play a role in low-noise amplification, power generation, frequency conversion, modulation, demodulation, and signal control in microwave circuits.

When the microwave oven is not heated, noise or vibration increases. Position detection of high-voltage diodes, high-voltage transformers, bidirectional diodes, high-voltage capacitors, microwave oven magnetrons is very important. If the microwave oven heats up slowly, the power of the microwave oven will be significantly lower than before. This is usually the case of magnetron aging, but also power control. Poorly selected switch or power relay contacts. If the microwave oven works but does not heat, you can measure the primary power supply of the high-voltage converter first, and then judge the repair range based on the measurement results.

When measuring microwave oven high-voltage diodes, the resistance of a multimeter can be used, and the circuit can be disconnected for segmentation detection. The negative terminal of the battery with the red bar of the multimeter is connected to the negative terminal of the diode, and the black bar is connected to the positive terminal of the diode for normal testing. When the microwave oven's high-voltage diode is damaged, a new high-voltage diode must be replaced. When choosing a microwave oven high-voltage diode, the first thing to consider is the withstand voltage, the withstand voltage should be greater than 1000V, the rated current should be greater than 1A, and a tube with infinite reverse resistance should be used as an alternative tube.

  Microwave ovens are widely used in modern homes and are a great helper to heat up food quickly and conveniently. Microwave oven diodes are a very sensitive part of microwave ovens, and if the microwave oven diodes are damaged, the entire microwave oven cannot be used. I believe that through this article, we have a certain understanding of the maintenance of microwave diodes.