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magnetron filament ?

djp

Oct 20, 2009
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Oct 20, 2009
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why is it important and what happens if you hook a higher voltage filament to lower voltage from the transformer, provided cathode high voltage is same
 

Resqueline

Jul 31, 2009
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Jul 31, 2009
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Electron emittance from a cathode is highly temperature dependent, so when you go below a certain filament voltage you just won't get a useful electron flow (and output).
I don't know all about magnetron characteristics but I have the impression they are more or less all-or-nothing devices when it comes to filament heating. I once fixed a non-working microwave by just tightening a slightly loose filament connection.
 
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