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After plugging your oven into a standard household socket, press start button or turn the timer. And then switches
(primary, secondary, timer) close the circuit.
Eventually the input power will be applied to turntable motor, timer motor, fan motor, oven lamp and high voltage transformer.
A high voltage of 2,100 volts AC is generated in the second winging of H.V.Transformer. And the voltage is doubled by
H.V.Capacitor & H.V.Diode. The 4Kv DC voltage is applied to filament of magnetron, then magnetron start to produce microwave.
This microwave is injected to cavity.
4-2. How does the microwave oven operate?