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RE: Hi B+ on Morrison Micro (moved from Tube DIY Asylum)

76.90.100.230

Tre'

In Reply to: RE: Hi B+ on Morrison Micro (moved from Tube DIY Asylum) posted by David Lawrence on December 08, 2022 at 13:12:13

What power transformer did you use?

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

Follow Ups:

RE: Hi B+ on Morrison Micro (moved from Tube DIY Asylum) - David Lawrence 13:56:47 12/08/22 (3)
Hi Tre'

Thanks for your reply. I used an Edcor XPWR010, with the HV secondary of 750 V, 175ma, and of course a center tap.

Best wishes,
David
- RE: Hi B+ on Morrison Micro (moved from Tube DIY Asylum) - Tre' 14:31:24 12/08/22 (2)
  Is there 750vac at the secondary?
  
  Tre'
  Have Fun and Enjoy the Music
  "Still Working the Problem"
  - RE: Hi B+ on Morrison Micro (moved from Tube DIY Asylum) - David Lawrence 15:05:02 12/08/22 (1)
    Hi that is the spec provided by Edcor, though I can't check it again tonight. Is there a rectifier tube compatible with the 5V4G that has enough voltage drop? Would that work?
    - RE: Hi B+ on Morrison Micro (moved from Tube DIY Asylum) - Tre' 16:42:17 12/08/22 (0)
      I was going to ask you about the DCR of the power supply choke and the DCR of the primary of the output transformer and also the value of the first cap in order to figure out why the voltage is high but I guess it doesn't matter.
      
      I think the rectifier with the largest voltage drop is the 5r4.
      
      Tre'
      Have Fun and Enjoy the Music
      "Still Working the Problem"

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