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Old 27th June 2007, 06:00 AM   #1
jarthel is offline jarthel  Australia
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Default aleph 1.7 power supply

having seem various tube voltage regulators, I have a feeling that the power supply for the Aleph 1.7 preamp is a series voltage regulator. Is this correct?

What should be the voltage going to the preamp circuit?

Thank you.
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Old 28th June 2007, 03:36 PM   #2
Gordy is offline Gordy  United Kingdom
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I presume that NP knows that this information is publicly available, and hence does not object.


Jarthel have a look at the manual...

http://diymania.net/pass/project/pic/aleph/apserv17.pdf


Although I have not built one, it would seem as if the supply to the active circuit is 60V from the series regulator.
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Old 28th June 2007, 04:34 PM   #3
jarthel is offline jarthel  Australia
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Quote:
Originally posted by Gordy
I presume that NP knows that this information is publicly available, and hence does not object.


Jarthel have a look at the manual...

http://diymania.net/pass/project/pic/aleph/apserv17.pdf


Although I have not built one, it would seem as if the supply to the active circuit is 60V from the series regulator.

thank you. I am guessing the string of zeners acts as reference for the series regulator chip?
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Old 29th June 2007, 11:36 AM   #4
Gordy is offline Gordy  United Kingdom
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Actually it's a FET not a chip, but yes, they do as you said.
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Old 29th June 2007, 12:39 PM   #5
Magura is offline Magura  Denmark
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This has become tireing!

Jarthel,

Do both yourself and us a favour. Go read the Zen articles, they ansver 99% of the questions you're asking, and the last 1% you should be able to figure by yourself after reading those articles.

You find them here: www.passdiy.com


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Old 29th June 2007, 01:56 PM   #6
jarthel is offline jarthel  Australia
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Quote:
Originally posted by Magura
This has become tireing!

Jarthel,

Do both yourself and us a favour. Go read the Zen articles, they ansver 99% of the questions you're asking, and the last 1% you should be able to figure by yourself after reading those articles.

You find them here: www.passdiy.com


Magura

I thought zen where power amps. And I was talking about preamps.

As I said, if you think I've done something wrong, report it to the mods.


OR it is very easy to ignore the threads I've created
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Old 29th June 2007, 02:36 PM   #7
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Quote:
Originally posted by Gordy
diymania.net
Me likey Cello schematic much nicer to look at, still not finished though.
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Old 29th June 2007, 03:35 PM   #8
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Quote:
Originally posted by jarthel


I thought zen where power amps. And I was talking about preamps.


Go and read those articles as Magura says they also include preamps plus the benefit of the author which is no less than Nelson Pass instead of hearing bits an pieces from all of us.

They are free for you to download, what more could you ask?
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Old 29th June 2007, 04:20 PM   #9
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Quote:
Originally posted by jarthel


OR it is very easy to ignore the threads I've created


Ignoring bad behavior is never a good policy. Try raising children sometime and see how far that attitude gets you.

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