[Abstract Dissonance]

Would is be possible to use something like a Colpitts oscillator to drive an
amplifier that is fed rectified input from the mains so that one can
generate a higher frequency output that can be used with smaller
transformers and inductors?

AD

 

[Dan Hollands]

It is certainly possible to use an oscillator to make a higher frequency
power output i.e. such as 400Hz but the design of the power output devices
and transformer is not for the novice.

Dan

 

[John G]

It is certainly possible to use an oscillator to make a higher
frequency power output i.e. such as 400Hz but the design of the power
output devices and transformer is not for the novice.

Dan

Yes. Was done way back in the late 50s with a large (originally Public
Address Amplifier) to provide 2kHz 110 volt power at about 2 kilowatts
for a guided missile electronic test rig.
Because the missile had a turbine driven alternator when in flight that
was not available when ground testing the assembly.

Amplifier stood in a 2m high 48cm rack with 2 20cm high output tubes
behind a glass window.
Memory is getting foggy.

 

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Would is be possible to use something like a Colpitts oscillator to drive an
amplifier that is fed rectified input from the mains so that one can
generate a higher frequency output that can be used with smaller
transformers and inductors?

AD

Thats half of how most modern switched modepower supplies work. The
other half is monitor the V_out and adjust timing to give regulated
output.

NT