|
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: Repost ... damping resistor ? posted by deathtube 667 on October 16, 2016 at 16:43:50:
200 Ohms is a ballpark value that I arrived at by trial and error in SPICE. It was a compromise between reducing the impedance bump on the one hand, and rendering the 0.32H choke ineffective on the other. In this case, the filter with the resistor across the choke exhibits rejection at 1 kHz approximately 30dB better than with the choke bypassed. I concluded from this and the previous measurements that 200 Ohms is an effective value. By all means, feel free to try other values if you want, it's just a matter of achieving the right compromise.
The resistor type can be almost anything. It's inductance is relatively unimportant, and power dissipation will be well under 50 mW if the 0.32H choke is 10 Ohms DCR.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Repost ... damping resistor ? - Triode_Kingdom 21:25:38 10/16/16 (4)
- RE: tried the damping resistor ... - deathtube 667 17:39:46 10/17/16 (3)
- RE: tried the damping resistor ... - Triode_Kingdom 19:29:11 10/17/16 (2)
- RE: 2uF? - deathtube 667 20:15:35 10/17/16 (1)
- Sorry, my mistake, meant the 2H choke - Triode_Kingdom 21:26:25 10/17/16 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
