|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
For Sale Ads |
Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.
Original Message
RE: Electronic Transformer heating for the gm70 test
Posted by Triode_Kingdom on January 28, 2017 at 20:18:25:
The transformers in my SETs run at 60-66kHz. Hum can be nulled with a pot, just like any other AC-driven filament. I wouldn't even consider using a DC system.