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Tube DIY Asylum: RE: Low DCR PS business by Ray Moth Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Low DCR PS business posted by Neff on July 14, 2008 at 21:04:01:
A zener or VR tube, connected across the supply following a series resistor, is a shunt regulator. Trouble is, there are limits to the current variability that such a shunt regulator can tolerate.
But how about if the zener or VR is used to control a MOSFET source follower by connecting it to the gate, with the drain connected to the power supply and the regulated output being taken from the source? There will be no voltage gain to cause noise, such as there would be in a traditional series regulator, so can this MOSFET source follower arrangement be considered as a beefed-up shunt regulator, or have we strayed into the polluted waters of series regulation?
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Topic - Low DCR PS business - Neff 20:27:33 07/14/08 ( 46)
- The SS Alternative - Gingertube 16:50:53 07/15/08 ( 2)
- For those who can't read German - danlaudionut 21:09:36 07/15/08 ( 0)
- RE: The SS Alternative - Ray Moth 19:33:52 07/15/08 ( 0)
RE: Low DCR PS business - Larry Moore 05:46:44 07/15/08 ( 2)
- RE: Low DCR PS business - Neff 19:53:12 07/15/08 ( 1)
- Heres the crux of the problem - drlowmu 15:33:57 07/16/08 ( 0)
It would be nice if theory always worked in practice.... - Thom_M 22:25:21 07/14/08 ( 13)
- It does work in practice, however.......... - Neff 18:53:57 07/15/08 ( 0)
"Good luck" is with me all the time. - cheap-Jack 12:39:31 07/15/08 ( 11)
- cheap-jack......... - Neff 19:08:50 07/15/08 ( 1)
- All roads lead to Rome. - cheap-Jack 13:19:43 07/16/08 ( 0)
RE: "Good luck" is with me all the time. - gusser 12:46:11 07/15/08 ( 4)
- I never deny the usefulness of a filter choke. - cheap-Jack 13:00:36 07/15/08 ( 3)
- RE: I never deny the usefulness of a filter choke. - drlowmu 14:41:59 07/15/08 ( 2)
- Is low low DCR the only thing to worry for a filter choke? - cheap-Jack 10:49:02 07/16/08 ( 1)
- RE: Is low low DCR the only thing to worry for a filter choke? - drlowmu 14:44:22 07/16/08 ( 0)
RE: "Good luck" is with me all the time. - . 12:44:11 07/15/08 ( 2)
- So tell me what I am mssing sonically/musically. - cheap-Jack 12:54:53 07/15/08 ( 1)
- Marilyn? (nt) - drlowmu 14:56:45 07/16/08 ( 0)
Correction: it shoud read "banishable". (nt) - cheap-Jack 12:41:48 07/15/08 ( 0)
RE: Low DCR PS business - drlowmu 20:45:48 07/14/08 ( 25)
- RE: Low DCR PS business - gusser 12:15:57 07/15/08 ( 7)
- I don't think that's the whole thing. - PakProtector 14:09:46 07/15/08 ( 6)
- RE: I don't think that's the whole thing. - gusser 18:40:38 07/15/08 ( 1)
- so then. - PakProtector 17:39:18 07/16/08 ( 0)
- RE: I don't think that's the whole thing. - John Swenson 17:42:34 07/15/08 ( 2)
- just quoting Jeff - PakProtector 18:22:31 07/15/08 ( 0)
- Low DCR is OK - gusser 18:21:45 07/15/08 ( 0)
RE: I don't think that's the whole thing. - drlowmu 15:25:11 07/15/08 ( 0)
RE: Low DCR PS business - Neff 21:04:01 07/14/08 ( 16)
- What speed? - gusser 12:34:34 07/15/08 ( 0)
RE: Low DCR PS business - Ray Moth 07/15/08 02:03:47 07/15/08 ( 4)
- RE: Low DCR PS business - PakProtector 14:15:42 07/15/08 ( 0)
RE: Low DCR PS business - drlowmu 08:46:40 07/15/08 ( 2)
- RE: Low DCR PS business - Ray Moth 16:26:01 07/15/08 ( 1)
- RE: Low DCR PS business - drlowmu 17:36:37 07/15/08 ( 0)
RE: Low DCR PS business - drlowmu 22:14:45 07/14/08 ( 4)
- RE: Low DCR PS business - Neff 19:01:46 07/15/08 ( 0)
Shunt regulation can be very good... - Thom_M 22:41:23 07/14/08 ( 2)
- RE: Shunt regulation can be very good... - Michael Samra 04:55:10 07/15/08 ( 1)
- RE: Shunt regulation can be very good... - Michael Samra 07:02:52 07/15/08 ( 0)
RE: Low DCR PS business - Tre' 21:16:37 07/14/08 ( 1)
- RE: Low DCR PS business - Neff 21:20:30 07/14/08 ( 0)
BTW - Neff 21:07:29 07/14/08 ( 2)