I was too late editing the previous post.
I wanted to add an un-cluttered schematic of the CF-drive, so here it is.
Simple, really!
rgds,
/tri-comp
I wanted to add an un-cluttered schematic of the CF-drive, so here it is.
Simple, really!
rgds,
/tri-comp
Cathode current becomes the limiting factor at low plate load impedance because G1 and G2 current and the plate current into the load all sum to the cathode.
The characteristic to look for is high perveance, which enables high peak cathode current. Sweep tubes and transmitter tubes are particularly good in this regard.
The characteristic to look for is high perveance, which enables high peak cathode current. Sweep tubes and transmitter tubes are particularly good in this regard.
Yes, I know and as I said earlier, I think the 6AD10 ran out of Ik.
I have a stash of NOS 21KQ6 sweep-tubes but how well suited they are for AB2 remains to be seen.
Eventually I'll get around to investigate.
My to-be renovated hobby-room is suddenly not so soon because of different reasons. It should be stripped completely for what's there now and fully renovated.
I also need to solve the heating-problem as during the winter it can easliy cost a fortune to heat the place. At least It did in the past when heating was done by electricity. Switching to propane lowered costs but now even that's become expensive.
Solar-heating...?
When finally done I'll have everything needed under hand. Parts, instruments ...and of course NO time 😛
rgds,
/tri-comp
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