Roger Glover wrote:
> > 1) What's blowing the capacitors?
> My guess is that its the 'af' ripple on the supply line that's causing the
> ripple current rating of the capacitors to be exeeded.
> To prove this does it happen when the amp is driven with continuous
> If Ok check the PSU for regulation also ensure that the dc cables are up to
> the job.
I'm leery of testing with continuous carrier because the amp gets hot quite
quickly. I don't operate SSB, if that's what you mean by 'AF' -- just CW.
The PS regulates within 0.2 volt and the cables are 00 gauge welding cables!
I'm using a pair of Astron RS70's with the sense lines paralled. I am going to
put a scope on the supply line and see what is there. Someone else suggested
that perhaps RF is being picked up by the cables external to the amp.