The role of high voltage capacitors in microwave ovens

Capacitors in different circuits play different roles. Microwave ovens are one of the most common electrical products in our lives. High-voltage capacitors are our indispensable electronic components. What role does high-voltage capacitors play in microwave oven circuits? Let's have a look!

The role of the high voltage capacitor is as follows:

1) "double voltage", high voltage capacitor and high voltage diode form a half-wave voltage doubler rectifier circuit. The high voltage transformer output 2100V AC voltage can be used to obtain the 4200V DC voltage required for the magnetron anode after half-wave voltage doubler rectification. It can also reduce the weight and reduce the volume of the high voltage transformer.

2) "Energy saving", the capacitor used in the microwave oven is not a common transformer capacitor, but a high-voltage transformer with "magnetic leakage" characteristics. The "magnetic leakage" principle is used to achieve the magnetron filament voltage of the microwave oven, and the anode voltage is automatically The purpose of voltage regulation is that due to the influence of the phase lag of the leakage inductance voltage, the utilization efficiency of the microwave oven is reduced, and the reactance characteristic of the high voltage capacitor is exactly opposite to the leakage voltage characteristic, the current phase is advanced, and the leakage current is delayed. It has a good compensation function. It is believed that the power factor of the microwave oven is increased to over 95%.

After reading the above introduction, do you know about the high-voltage capacitors in the microwave oven? I hope the content of this article can help everyone.