900W H-class PA Amp with Limiter

Hello Sir Apex , is that right that h900 output transistors 2sa5200 and 4300 i guess are powered from the MV in the schematic that would be 55/60 volts and the step driver from 55/60 volts too?
and when the output sags the supply rail the step drivers 55 volts kicks in to stabilise it ?
Have I got it right?
 
STEPDRIVER

DEAR APEXAUDIO SIR
hello this s my first post on diy fascinated by your h class
made your step transistorised version on positive side MV OUT is ok 55 volts out
but negative side on MV negative i am getting 110 volt out reffering to post 1344
transistors used are MPSA92 and 2N3906 is negative section schematic ok
please excuse my poor english
thanking you
warm regards
dilip
 

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Last edited:
DEAR APEXAUDIO SIR
hello this s my first post on diy fascinated by your h class
made your step transistorised version on positive side MV OUT is ok 55 volts out
but negative side on MV negative i am getting 110 volt out reffering to post 1344
transistors used are MPSA92 and 2N3906 is negative section schematic ok
please excuse my poor english
thanking you
warm regards
dilip

try the correct schematic on post 1346