Re: The "Sussex" Homebrew Valve Tester.
Steve Bench's RAT tester uses a CCS in the cathode and in that way sets automatically the negative g1 voltage. It has its own set of (potential) problems.
All I am thinking about is to limit the current in the anode feed with a CCS, set the voltage on g1 as per manual and then check the AC voltage (against ground) on the plate.
However the Sussex works fine as is and I might built it without any changes - for the moment the important part is to figure out if a dual triode is matched. Pentode's I can figure out in circuit.
|