This high voltage is then boosted even higher by the voltage-doubling action of the capacitor and diode. In most newer models, the transformer also incorporates a second output winding, as shown in the illustration below.
Some models use a separate filament transformer .
If that is the case, skip steps 3 through 5. Important Safety Information Microwave ovens are one of the most dangerous appliances to work on. Before attempting any troubleshooting, testing or repairs, for your personal safety we strongly urge you to carefully read, fully understand and be prepared to follow carefully the very important safety precautions found by clicking here . Please read our disclaimer at the bottom of this page. Some early models are equipped with two or three high-voltage taps.