UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Contemplated PCL86 push-pull home brew stereo amplifier

GrimJosef · 21st Mar 2022, 11:41 pm

It looks more like 18V from the picture (the trace spills over the top and bottom of the graticule).

But that's 18V pk-pk, which is about 6.4V RMS.

Into 7.5ohm that's 5.4W.

I'd be slightly surprised if it was clipping at that power. Are you sure it's not the scope that's clipping (it's best to keep the trace inside the graticule limits) ?

Cheers,

GJ

21st Mar 2022, 11:41 pm	#73
GrimJosef Dekatron Join Date: Sep 2007 Location: Oxfordshire, UK. Posts: 4,311	Re: Contemplated PCL86 push-pull home brew stereo amplifier It looks more like 18V from the picture (the trace spills over the top and bottom of the graticule). But that's 18V pk-pk, which is about 6.4V RMS. Into 7.5ohm that's 5.4W. I'd be slightly surprised if it was clipping at that power. Are you sure it's not the scope that's clipping (it's best to keep the trace inside the graticule limits) ? Cheers, GJ __________________ http://www.ampregen.com