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Old 21st October 2001, 10:31 PM  
diyAudio Member
Join Date: Oct 2001
Location: UW Stevens Point Campus
Can I increase the rail voltage of the Anthony holton amp to 85 volts without any problems?

Old 22nd October 2001, 08:50 AM  
Freddie is offline Freddie  Sweden
diyAudio Member
Join Date: Oct 2000
Location: Sweden
Default Look what I found.....

Look what I found in another thread:

"reply form aussieamps

The n-channel design should have no trouble handling supply rails as high as +-95 volts. The only thing that needs to be checked is the thermal stability of the o/p stage and perhaps a small heatsink on the pre-regulator ccT for the bias control...
The other thing would be the use of more powerful devices if 4 Ohm loads are to be used at higher power levels around 300 watts or higher...
Advanced Power Technology or APT make most excellent devices with case power dissapation as high as 500 watts..

warm regards

Anthony Holton "

BTW:Remember to match the Mosfets..

Old 22nd October 2001, 02:32 PM  
diyAudio Member
Join Date: Oct 2001
Location: UW Stevens Point Campus
Do you know what anthony means when he says pre regulator ccT?

Old 22nd October 2001, 04:01 PM  
Freddie is offline Freddie  Sweden
diyAudio Member
Join Date: Oct 2000
Location: Sweden
I think he means Q11.
BTW: This looks like a really nice amp, I would like build one myself.

Old 2nd November 2001, 07:37 PM  
BG is offline BG
diyAudio Member
Join Date: Nov 2001
Hi everyone. First post here...

I also was intrigued by this particular Mosfet amp. A while back I did a quasi-comp. N-FET amp using some IRFP-254's I had lying around, but elected to use a PNP stage on the low-side FETs, as per "standard" quasi design. Does anyone have any comments on the use of a phase-spltter as shown in Anthony's circuit?



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