|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
|
|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
In Reply to: Re: I worship the DHT electric posted by Thomas Mayer on March 9, 2007 at 04:42:50:
I had some noise coupling between filament supply and B+ supply of the circuit. Since they did not share the same grounds, I got some noise. How is your filament supply connected to the B+ ground ? I assume since you use a CCS in the cathode (filament) to ground connection it's floating ?>Yes, that's right. The filament supply is floating in all cases. I run each diff pair off one filament supply, in series or parallel - doesn't matter with a current source since if you take one valve out in the first case it goes open circuit and in the second the current stays the same. As you say, the CCS sets the current in the diff pair and that's earthed to the common audio earth, with -15vDC supply.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: I worship the DHT electric - andy evans 05:11:30 03/09/07 (1)
- Re: I worship the DHT electric - Thomas Mayer 06:48:38 03/09/07 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]