Voltage Doubling - Electrolux In General Service Manual

Voltage doubling

The voltage doubler consists of a diode
and a capacitor.
The following indications of voltage serve
the explanation and should never be
measured again.
Measurements, especially in the high-
voltage part, must only be carried out
as resistance measurements in an oven
which is disconnected from the
mains!!!
The over 2,000 Volt AC voltage of the
secondary winding of the high-voltage
transformer are converted into over 4,000
Volt DC voltage.
That operates the magnetron.
After the oven has been switched on, the
first positive wave charges the capacitor
with more than 2,000 Volt.
After the polarity has been changed, the
diode avoids that the capacitor is
discharging.
The voltage of the positive half wave is
added to the charge of the capacitor.
The desired DC voltage of approx. 4,000
Volt arises.
created by TSE-N, Reiner Kurzke
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