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Old 26th January 2005, 03:50 PM   #1
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Default Power supply regulators

Hello.


I have a question regarding preamp power supply.
I'm using a rec. diode bridge followed by big capacitors,
and then 317/337 regulators. Now, I'v got to pcbs:
one for the supply, and the other for the preamp itself.

It may seem obvious to some, but:
Idealy, do the 317/337 should be on the preamp pcb?
or should I put them on the supply pcb?
(The distance between the two pcb's is something like 30cm)



Help whould be appreciated.

Thanks,

Udi.
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Old 26th January 2005, 04:00 PM   #2
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Keep all the power supply bits on one board. Just make sure you decouple any power supply pins on op-amps in your pre-amp.
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Old 4th February 2005, 06:57 AM   #3
d3imlay is offline d3imlay  United States
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I agree keep 'em separated, especially keep the xfmr away from the preamp. Follow the data sheets for input/output caps for stability.
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