In Reply to: RE: critical L input filter: PSUD2 ... yes or no good? posted by deathtube 667 on October 11, 2016 at 20:41:28:
It's difficult to know for certain why that occurred. However, I can tell you that the use of multiple, small-value, Low-DCR chokes and smallish caps creates a lot of undesired responses in the output Z of a supply at low frequencies.
Here's an example (yours looks superb compared to this!):
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Flywheels and Low DCR - Triode_Kingdom 21:43:25 10/11/16 (16)
- RE: Flywheels and Low DCR - deathtube 667 08:24:34 10/12/16 (15)
- RE: Flywheels and Low DCR - Triode_Kingdom 10:34:12 10/12/16 (9)
- RE: is it really that awful ... maybe in spice? - deathtube 667 20:13:45 10/12/16 (6)
- RE: is it really that awful ... maybe in spice? - Triode_Kingdom 22:22:40 10/12/16 (5)
- RE: is it really that awful ... maybe in spice? - dave slagle 06:41:31 10/13/16 (4)
- Output Z - Triode_Kingdom 08:46:20 10/13/16 (0)
- RE: adjusted graph ... - deathtube 667 07:42:57 10/13/16 (2)
- RE: adjusted graph ... - Triode_Kingdom 22:13:29 10/13/16 (1)
- RE: 3 stage flywheel for RH project amp... - deathtube 667 10:44:34 10/14/16 (0)
- HK Voltage doubler - gusser 12:43:50 10/12/16 (1)
- RE: HK Voltage doubler - Triode_Kingdom 13:10:24 10/12/16 (0)
- RE: Flywheels and Low DCR - drlowmu 09:12:09 10/12/16 (4)
- RE: Flywheels and Low DCR - deathtube 667 11:27:12 10/12/16 (3)
- Do you still test light bulbs? - gusser 12:11:59 10/12/16 (2)
- RE: nope ... - deathtube 667 12:44:59 10/12/16 (1)
- I stand corrected then. (nt) - gusser 12:47:30 10/12/16 (0)