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kubeek 27th June 2006 08:00 PM

Voltage amp mixed with current amp?
Today I got this brand new idea (or I hope it is).
Normal power amps creates output voltage according to input voltage.

Would it be possible to "bridge" usual voltage-amp with a current-producing amp (similar to current source - feedback after some resistor and before load) to create an amplifier that produces output power based on input voltage?

Could this improve the output signal quality, because it wouldn´t change output power with the load impedance changing?

MikeB 27th June 2006 08:28 PM

Hmmm, the result would be a pure current producing amp, as it will dominate the voltage amp. The current producing amp will produce the voltage necessary to have the current it wants, completely overriding what the voltage amp does.
It might sound interesting, but colorized by the impedance curve of the speaker.


kubeek 27th June 2006 08:32 PM

Yeah, that seems quite right.
Again, I missed those little details..:rolleyes:

MikeB 27th June 2006 08:36 PM

No problem, it's good to see that there are still some people searching for new concepts !


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