Re: multi-supply audio amp

john larkin <jl@glen--canyon.com> wrote:

I recall that there was an audio power amp topology that used two
transistors and two power supplies for each polarity output. Low
voltage swings used a low voltage supply but it cut over to a HV
supply for big swings, with diodes or something.
 
What was that called?
 
 

>
Class E through G, iirc.  Class H makes the supply rail approximately track
the output. (We use that for TEC controllers. )
>
Cheers
>
Phil Hobbs