sonolink

PSU mod question
« on: July 21, 2019, 07:47:25 AM »
Hello,

If I want to use only one HV terminal (HVBA) of the attached PSU, can I just delete C7, R5, HVB1 and HVB2 from the schematic?

Cheers
Sono
Why sleep when you can mix?
M.P.Stavrou


JohnRoberts

Re: PSU mod question
« Reply #1 on: July 21, 2019, 09:17:07 AM »
you would have more ripple in the ps, and perhaps audible hum...

JR
« Last Edit: July 21, 2019, 10:29:26 AM by JohnRoberts »
Don't only half-ass tune your drums. Visit https://circularscience.com to hear what properly "cleared" drums sound like.

moamps

Re: PSU mod question
« Reply #2 on: July 21, 2019, 09:59:12 AM »
you would have more ripple in the ps, and perhaps audible hum...

I believe the schematic should be examined from right to the left.  :)

JohnRoberts

Re: PSU mod question
« Reply #3 on: July 21, 2019, 10:28:48 AM »
I believe the schematic should be examined from right to the left.  :)
Yes... disregard my comment...

JR
Don't only half-ass tune your drums. Visit https://circularscience.com to hear what properly "cleared" drums sound like.

sonolink

Re: PSU mod question
« Reply #4 on: July 21, 2019, 12:14:11 PM »
This PSU was designed to feed 2 valves. I want it to feed only one. Is it ok to just delete C7, R5, HVB1 and HVB2 from the schematic or would there be a load problem or some kind of unbalance?

Thanks for your input :)
Cheers
Sono
Why sleep when you can mix?
M.P.Stavrou

PRR

Re: PSU mod question
« Reply #5 on: July 21, 2019, 02:48:53 PM »
In small audio, I would normally spend the buck for more filtering, unless I was very broke.

moamps

Re: PSU mod question
« Reply #6 on: July 21, 2019, 02:54:05 PM »
Is it ok to just delete C7, R5, HVB1 and HVB2 from the schematic or would there be a load problem or some kind of unbalance?

You should post the whole schematic, sometimes the additional RC network is useful for decoupling two stages. If you really don't need it, you can delete it.   

sonolink

Re: PSU mod question
« Reply #7 on: July 21, 2019, 06:10:53 PM »
You should post the whole schematic, sometimes the additional RC network is useful for decoupling two stages. If you really don't need it, you can delete it.   

Thanks for your reply Moamps. This is the whole schematic of the PSU.
I used it for this:
https://postimg.cc/QHFK2fjM

I'd like to use it on a similar circuit, but that has only one tube. My concern is if feeding that tube anode from only one HV terminal is ok.

Thanks!
Cheers
Sono

Why sleep when you can mix?
M.P.Stavrou

sonolink

Re: PSU mod question
« Reply #8 on: July 22, 2019, 06:17:13 PM »
Pretty bump....
Why sleep when you can mix?
M.P.Stavrou

moamps

Re: PSU mod question
« Reply #9 on: July 23, 2019, 06:57:08 AM »
It should be ok.  My bigger concern is will this step up converter work as it should. 


sonolink

Re: PSU mod question
« Reply #10 on: July 23, 2019, 07:19:10 AM »
Well it does with the 2 tubes circuit :)
Why sleep when you can mix?
M.P.Stavrou


 

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