Here is the link:They make readymade PWM amplifiers but don't ask cost!!!!!
http://eportal.apexmicrotech.com/mai...m_overview.asp

I asked their reps in Mumbai and they said each IC costs Rs.25,000/-
But one can make PWM output like that and then have just High freq. txr or
direct output with filter.
regards,
Dayama





Quote Originally Posted by sougata
Hi Dayama,

It is possible to reduce the size of the transformer. Looks like a class-d amp solution to me. A simple filter would reconstruct the sinewave and remove the HF component.Did you find anything or anyone having done it on the net. I will also search and probably would like to develop one. But some practical start point is needed.

Regards

Sougata