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Old 3rd June 2004, 06:00 PM   #1
TobWen is offline TobWen  Germany
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Default which PSU for Solid-State-Preamp? (4 pics attached)

Hi there,

I am going to build some Solid-State (mic)preamps for mic-recordings.

I have got some PSU-circuits on paper and don't know, which is the best one :-)

Which one would YOU use?
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Best regards,
Tobias
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Old 3rd June 2004, 08:28 PM   #2
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I would properly use no. 3, however there are many other designs
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Old 3rd June 2004, 08:36 PM   #3
TobWen is offline TobWen  Germany
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mmh ... can you tell me your prefered one (outside mine)?
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Old 3rd June 2004, 08:51 PM   #4
sreten is offline sreten  United Kingdom
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Well only one has provision for phantom powering, but this
isn't easy to use without using microphone transformers.

sreten.
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Old 3rd June 2004, 08:58 PM   #5
TobWen is offline TobWen  Germany
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of course all the other PSUs would have 48+, too but I first need a good "basic solution".

What about changing 10 to 100n in "psu1.png"?
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Old 3rd June 2004, 08:59 PM   #6
jaycee is offline jaycee  United Kingdom
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If you want to keep it simple, the 317/337 is the best way to go for the lowest noise. If you want even lower noise, look at using a Jung Super Regulator arrangement.
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Old 3rd June 2004, 09:02 PM   #7
TobWen is offline TobWen  Germany
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hehe ... I really think of using a big battery for the whole project :-)

@jaycee: I think the 317/337 isn't a simple solution, compared to the others :-)
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Old 3rd June 2004, 09:35 PM   #8
jaycee is offline jaycee  United Kingdom
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That schematic you posted isn't, no.. but put together a 317/337 yourself, it's only 2 more parts than using a 7815/7915.
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Old 3rd June 2004, 09:38 PM   #9
TobWen is offline TobWen  Germany
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mmh ... I never worked with 317/337.
Do you have a circuit for that (I don't mean the datasheets :-) )

I really need a good PSU for a preamp ...
Is a 317/337 with 2 more parts than 7815... enough for that?
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