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Old 8th Feb 2010, 5:42 pm   #138
Radio_ham
Retired Dormant Member
 
Join Date: Jan 2010
Location: Algeria, Oran.
Posts: 2
Default Re: The "Sussex" Homebrew Valve Tester.

Hi Mike,

I'm new to this forum and I am personally highly interested in building the VT1. However, unlike many in this forum, I am not too familiar with tube tester circuitry. Thus, may I ask you please some additional explanations on the following topics:
* some details on the role of the FUNCTION SWITCH in particular with respect to its positions 2 (ANODE S/C) & 3 (GRID2 S/C ),
* the role of the BC237 transistor circuit,
* the VR1, VR2 & VR3 settings to be made,

Hoping not to have abused your kindness- Many thanks es vy 73.

Dan
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