which PSU for Solid-State-Preamp? (4 pics attached)

TobWen · 3rd June 2004, 06:00 PM

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?

Best regards,
Tobias

Jan Dupont · 3rd June 2004, 08:28 PM

I would properly use no. 3, however there are many other designs

TobWen · 3rd June 2004, 08:36 PM

mmh ... can you tell me your prefered one (outside mine)?

sreten · 3rd June 2004, 08:51 PM

Well only one has provision for phantom powering, but this
isn't easy to use without using microphone transformers.

sreten.

TobWen · 3rd June 2004, 08:58 PM

of course all the other PSUs would have 48+, too but I first need a good "basic solution".

What about changing 10µ to 100n in "psu1.png"?

jaycee · 3rd June 2004, 08:59 PM

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.

TobWen · 3rd June 2004, 09:02 PM

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 :-)

jaycee · 3rd June 2004, 09:35 PM

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.

TobWen · 3rd June 2004, 09:38 PM

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?

3rd June 2004, 06:00 PM	#1
TobWen diyAudio Member Join Date: Dec 2003 Location: Germany	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? Best regards, Tobias

3rd June 2004, 08:28 PM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	I would properly use no. 3, however there are many other designs __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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3rd June 2004, 08:36 PM	#3
TobWen diyAudio Member Join Date: Dec 2003 Location: Germany	mmh ... can you tell me your prefered one (outside mine)?

3rd June 2004, 08:51 PM	#4
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Well only one has provision for phantom powering, but this isn't easy to use without using microphone transformers. sreten.

3rd June 2004, 08:58 PM	#5
TobWen diyAudio Member Join Date: Dec 2003 Location: Germany	of course all the other PSUs would have 48+, too but I first need a good "basic solution". What about changing 10µ to 100n in "psu1.png"?

3rd June 2004, 08:59 PM	#6
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	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.

3rd June 2004, 09:02 PM	#7
TobWen diyAudio Member Join Date: Dec 2003 Location: Germany	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 :-)

3rd June 2004, 09:35 PM	#8
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	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.

3rd June 2004, 09:38 PM	#9
TobWen diyAudio Member Join Date: Dec 2003 Location: Germany	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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