View Single Post
Old 9th Dec 2013, 9:53 pm   #1008
AmadeusMozart
Triode
 
Join Date: Oct 2009
Location: Masterton New Zealand
Posts: 17
Default 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.
AmadeusMozart is offline   Reply With Quote