I have a load of old valves, mainly ECC82, 83, 88s, and EL34s and EL84s. Some are quality (Mullard 8137 and 8136), some are not, but I have no idea of their condition.
So I googled "DIY valve tester" and eventually came up with this - http://www.valveheaven.com/2015/03/a...vetube-tester/
It looks simple enough even for me, and I have transformers, HT caps, resistors, valve sockets and casework, so it won't cost much to build. I have ordered the switches and meters, so when they arrive (from China; could be January!) I can give it a go.
But before I start, does anyone have any views or advice on the circuit, or implementation? At the moment I plan to follow his plans, allowing for the need to use 2 transformers and older combined caps (470uF/400v + 800uF/250v common neg in a single can).
So any thoughts from anyone who actually knows what they are doing would be welcome.