Can a magnetrons frequency be changed?
could the resonate cavity be changed to change the frequency?
Quote from: Dave45 on December 12, 2008, 03:10:37 PM
could the resonate cavity be changed to change the frequency?
Magnetron operating frequency is primarily determined by overall and cavity dimensions.
Could the voltage applied to the magnetron affect the frequency?
Quote from: Dave45 on December 12, 2008, 05:58:12 PM
Could the voltage applied to the magnetron affect the frequency?
Yes, but I think you'll find there is a bottom end where it stops working completely. They can be fairly wide band, compared to other cavity devices. If memory serves correctly that band isn't incredibly wide.
I see a resonant cavity a bit like a flute so, physically changing the parameters of the cavity would give generate different frequencies.
I would leave the voltage alone.
I think it would make a great hho electrode.Like the best garbage project!
I tore a magnetron apart I didnt see anything that resembled the frequency generator that was in the pic
What is the big energy consumer in these devices? Does the magnetron need a shitload of current or just voltage? Whenever I see a whole bunch of steel and copper trying to get high voltage I wonder about the efficiency of such a circuit.
Maybe the current draw is from the filament heating? If that is the case couldnt they just boost the voltage and run it cold cathode? How much current do you need to make radio waves anyway. Especially ones that bounce around inside a resonant cavity? Sorry for sounding like Andy Rooney. :)
Some types can be varied mechanical (with screw)
The magnetrons from microwave-ovens cant changed the frequency..
Its allowed oals only that 2,45 Ghz..
what an frequency range you need ?
Needed Power , ? watts.
possibly i can find them
Gustav Pese
@Pese
The size of the cord going to a microwave oven bothers me. Why all the current draw? Hell I've seen 1000watt linear amplifiers that don't pull a thousand watts. What's up with these machines?
Quote from: sparks on January 06, 2009, 06:35:30 PM
@Pese
The size of the cord going to a microwave oven bothers me. Why all the current draw? Hell I've seen 1000watt linear amplifiers that don't pull a thousand watts. What's up with these machines?
[/quote]
noting magic
you can also do 500 or 1000 wat tubes.
with an single power-transmitter tube for shortwave
for longwaves (as for tesla-coils).
also low as 50kz. for induction heating (melting metals and so on.
- most are Triodes used. ta ave an grid = gate)
only power tube resonating coils for chosen frequency
transformer for heating te cathode.
Anode voltage and amps (must be chosen for power dissipation..
nothing magic, i was "playing" with such devices since 50 years ago,
becaus my father learned me most knowledges in electronics
[/b]]ote]
noting magic
you can also do 500 or 1000 wat tubes.
with an single power-transmitter tube for shortwave
for longwaves (as for tesla-coils).
also low as 50kz. for induction heating (melting metals and so on.
- most are Triodes used. ta ave an grid = gate)
only power tube resonating coils for chosen frequency
transformer for heating te cathode.
Anode voltage and amps (must be chosen for power dissipation..
nothing magic, i was "playing" with such devices since 50 years ago,
becaus my father learned me most knowledges in electronics
(http://[b)