Highest amplifier supply rails?

teslaman wrote: If you mean class-AB with no rail switching (i.e. not class G/H) then i've seen up to +/- 90/100V split rails but there are probably more extreme examples out there (Maplin 1kW amp kit or OMP 1kW MOSFET amp perhaps?). Above these rail voltages it's harder to find decent transistors and more effeciency from class-G/H helps keep dissipation down anyway whilst lowering the maximum voltage the devices see. Class-D is a different matter of course...

Ecler's PAM 6100 is a class AB amplifier with two 3,6kVA toroidal transformers, cca. 150V DC per rail and delivers 1750W per channel on 4 ohms load. That's the highest power supply voltage I've seen in a AB class design. It has 24 switching fets in the output, IRFP360.

I think the Maplin 1Kw and the BK Electronics 1000w module were both approx +/-90v.

burningbush wrote: Anode supply voltage to KT66 of 475-575v. Anode supply voltage to V1505 of 2-2.5kV. From the Audio Freq. Amplifier Design book from GEC ltd (London) 1957.

The good old V1505, thats what inspired my user name!!!!!

Yeah I was thinking of the V8 that uses 4 matched pairs of KT88. Serious stress and the valve bases coated in silicone grease.

I use on mine modules of amplification, +/- 96-98Vdc

DjLeco wrote: I use on mine modules of amplification, +/- 96-98Vdc   AB-B Class module amps.   Test here:   http://www.youtube.com/watch?v=KrenN56u-GY

You burnt the floor with those dummy load resistors. 



Edited by M4trix - 08 March 2012 at 7:18pm