Using power supply to power pre-amp?

preiter · 10th May 2006, 12:33 AM

If I wish to put a GC Amp and a pre-amp in the same case, is it possible to use the same power supply to drive both?

Are there drawbacks to doing this?

Nuuk · 10th May 2006, 08:03 AM

Please search for your answer. This subject has been covered many times before!

Wynand · 11th May 2006, 12:42 PM

You can. See the LM317 and LM337 datasheets or do a search on this site. there are lots of schematics and even pcb layouts. Remember to use heatsinks.

The best would be to have seperate PSU's but for some it's overkill. That's what I'd like to do.

PS LM317 and LM337 are better than LM78xx and LM79xx.

Mad_K · 11th May 2006, 12:45 PM

What is the PSU voltage in your GC at idle?

Wynand · 11th May 2006, 12:52 PM

Sorry. That could be a problem. You must look at the max voltage ratings for the voltage regulators. That's another reason LM317/337 is better than LM78xx/79xx.

10th May 2006, 12:33 AM	#1
preiter diyAudio Member Join Date: May 2006	Using power supply to power pre-amp? If I wish to put a GC Amp and a pre-amp in the same case, is it possible to use the same power supply to drive both? Are there drawbacks to doing this?

10th May 2006, 08:03 AM	#2
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Please search for your answer. This subject has been covered many times before! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

11th May 2006, 12:45 PM	#4
Mad_K diyAudio Member Join Date: Sep 2002 Location: Norway	What is the PSU voltage in your GC at idle? __________________ Mads K

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11th May 2006, 12:42 PM	#3
Wynand diyAudio Member Join Date: Mar 2005 Location: Cape Town	You can. See the LM317 and LM337 datasheets or do a search on this site. there are lots of schematics and even pcb layouts. Remember to use heatsinks. The best would be to have seperate PSU's but for some it's overkill. That's what I'd like to do. PS LM317 and LM337 are better than LM78xx and LM79xx.

11th May 2006, 12:52 PM	#5
Wynand diyAudio Member Join Date: Mar 2005 Location: Cape Town	Sorry. That could be a problem. You must look at the max voltage ratings for the voltage regulators. That's another reason LM317/337 is better than LM78xx/79xx.

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