Re: The "Sussex" Homebrew Valve Tester.
Have received the latest PCB from Martin, super quality, and nearly finished assembly. Testing in stages, with a 9v supply the ocillator worked a treat with BC307Bs. Next thing is to power up the 48 v supply and check that is OK, then the HT supply.
Having bit of difficulty associating some of the terminals with the original wiring diagram, partly because most of the external boards are on the main PCB now.
Going to add a heater voltage meter, I was hoping to squeeze some wire in existing bobbin but no room as filled to laminations so another transformer.
Andy
|