New to the forum, first posting.
I am currently refurbishing a set of Mark IIIs and about to install the VTA driver board for these lovely puppies. On my wish list, possibly, is the installation of a permanent meter(s) for monitoring the tube bias.
There are two ways to do this;
1. A volt meter wired across the bias measurement resistor(s). Scaled 0-2V at best.
2. A milliameter wired in series with the bias measurement resistor(s). Scaled 0-100 or so mA.
Question, is this an ok thing to do and which method is preferable to monitor the bias, voltage or current. I know that you can set the bias by either method but will either approach have negative effects on the Mark IIIs ?
If anyone has any comments in regards, glad to hear them.