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Re: MOT's for sale, or advise for a MOT
> Well, anywasy, just to make sure it's normal, it has
> 2 output wires coming out of the center, I was told these are not the
input,
> but rather the output to power a lightbulb or soemthing.
Those power the filament of the magnetron (tube) in the oven. They are
insulated from ground for several thousand volts, and often share a common
terminal with the HV terminal.
> there are two other wires coming out of
> the primary windings (input),
Right you are..
> and the case and this wire coming out of the
> top is the HV terminal (right?)
You got it...
> Then the microwave also came with a 2400vAC .85uF capacitor.
That cap is used in a voltage doubler to make HV for the tube... There was
probably also a HV diode in the circuit. Usually, that cap has a fairly
high value resistor across it (internal to the can) to bleed the voltage
down when you turn the oven off for safety.
Circuit looks like:
T-----------------------------------------------------------I
T I
T-------------------------------------------I I
| |
T- - - - - - CAP ------------------------- FFF-------
T I Cathode
T |
T HV Magnetron
T diode
T V
T I Anode
T I I
T---------------------------------------------------I
GND GND GND GND GND GND GND
TTT is transformer winding (top one is fil winding at 5-6 V, bottom is HV
winding at 2-3kV)