[Amps] my gu-84b amp project
Partain, Chuck
Chuck_Partain at maxtor.com
Mon Mar 6 09:26:20 EST 2006
So, after some playing later lastnight and replacing the glitch r with the SAME value, (22ohm 2w) I'm leaving it low for now
I set my ft100 on 7.1m as I had setup the tank for this the first time.
I key'd the input with up to 3w and saw the cathode I increase and decrease, so that part was working OK.
At some points of keying on and off, the current stayed increased, hence an oscillation is in there.
I scoped a few lines out and havn't found anything obvious yet...but 3 in 300 out when it was working
looking over my schematic this morning, I see a few more places I can decouple various inputs with caps.
looked promising! and thats with 600v on the plate. I will go back and recalibrate the meters to get a MUCH
better reading and remark them (I didnt change the scales after I shunted them, BAD NO NO) but
I did see they were CLOSE putting a 1.5v batery with a known R on them previously.
I wish work went by as fast as playing around with these toys!!
there is a partially remarked schematic on my website I put up there, various relays and some caps were not added
as it was a late night and I just posted it.
http://home.comcast.net/~ka1mwp
Chuck Partain
ka1mwp
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