UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Mullard 3-3 voltages query

qualityten · 13th Apr 2021, 10:32 pm

Thanks for the further input.

Techman, you're right of course, though I did say 'about' 0. I just couldn't be bothered to check how low it went.

Andy, thanks for the info about square wave testing. Good to hear that a bit of HF boost is handy and fixable. My dummy loads are just 8ohm 10W wirewound resistors and Morgan Jones frowns on them for being inductive. I can't find a source of the 50W non-inductive thick film resistors that he recommends. What do others use for dummy loads?

Murphyv310, interesting to hear that lower HT is fine too. I have a lower power transformer standing idle, so I just might build another one of these days! Once my error was spotted and fixed, mine has no hum or hiss.

13th Apr 2021, 10:32 pm	#30
qualityten Octode Join Date: Feb 2009 Location: Wallasey, UK. Posts: 1,314	Re: Mullard 3-3 voltages query Thanks for the further input. Techman, you're right of course, though I did say 'about' 0. I just couldn't be bothered to check how low it went. Andy, thanks for the info about square wave testing. Good to hear that a bit of HF boost is handy and fixable. My dummy loads are just 8ohm 10W wirewound resistors and Morgan Jones frowns on them for being inductive. I can't find a source of the 50W non-inductive thick film resistors that he recommends. What do others use for dummy loads? Murphyv310, interesting to hear that lower HT is fine too. I have a lower power transformer standing idle, so I just might build another one of these days! Once my error was spotted and fixed, mine has no hum or hiss.