|
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. |
|
Planning to put together a power supply for a 26 pre.
I'll be using a RGN 1064 mesh anode rectifier. It requires 4 volts on it's heater, but I can only find transformers at 5 volt.
Calculations on a dropping resistor on the 5v secondary are pretty easy as the filament draw is a tick over 1 amp (1.1A). 1 volt drop @ 1 amp = 1 ohm @ 1 watt.My concern, since the rectifier is directly heated, is the potential sonic degradation that might be incurred using this method, if in fact it does degreade the sound. There will be a voltage regulator of some sort downstream after the LCLC filter ( still undecided and playing around / looking at S.S. or tube based regs), so if the dropping resistor effects the over all sonics it might just be extremely minimal if at all ?... But I have no experience in this area.
I would be using a separate transformer for the heater so it would be possible to do something on it's primary to not have to worry, but I have little if no knowledge on how this would be done....
Soooooo...... this post.
Thanks fella'a
JD
Edits: 05/25/12 05/25/12 05/25/12 05/25/12 05/25/12
This post is made possible by the generous support of people like you and our sponsors:
Topic - least sonic degradation way to drop voltage........ - Jeff Davison 07:58:30 05/25/12 (22)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 20:16:25 05/25/12 (2)
- RE: least sonic degradation way to drop voltage........ - drlowmu 05:50:53 05/26/12 (1)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 07:06:33 05/26/12 (0)
- if that 1 ohm resistor is a concern, then I'd order a custom filament transformer..... - bouncy ball 13:54:39 05/25/12 (2)
- RE: if that 1 ohm resistor is a concern, then I'd order a custom filament transformer..... - Jeff Davison 14:37:48 05/25/12 (1)
- RE: if that 1 ohm resistor is a concern, then I'd order a custom filament transformer..... - drlowmu 17:27:21 05/25/12 (0)
- RE: least sonic degradation way to drop voltage........ - danlaudionut 09:23:32 05/25/12 (0)
- You said you are going to use a DC regulator - jedrider 09:21:53 05/25/12 (1)
- RE: You said you are going to use a DC regulator - Jeff Davison 09:28:19 05/25/12 (0)
- RE: least sonic degradation way to drop voltage........ - Tre' 09:00:52 05/25/12 (6)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 09:25:07 05/25/12 (5)
- RE: least sonic degradation way to drop voltage........ - Tre' 09:31:49 05/25/12 (4)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 09:41:38 05/25/12 (3)
- RE: least sonic degradation way to drop voltage........ - Tre' 10:22:46 05/25/12 (2)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 10:32:12 05/25/12 (1)
- RE: least sonic degradation way to drop voltage........ - Tre' 11:50:14 05/25/12 (0)
- RE: least sonic degradation way to drop voltage........ - coronadope 08:38:51 05/25/12 (5)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 08:42:03 05/25/12 (4)
- RE: least sonic degradation way to drop voltage........ - Triode_Kingdom 10:36:22 05/25/12 (3)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 10:49:27 05/25/12 (2)
- RE: least sonic degradation way to drop voltage........ - Triode_Kingdom 13:12:00 05/25/12 (1)
- RE: least sonic degradation way to drop voltage........ - Jeff Davison 13:16:26 05/25/12 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
