Linear regulated power supply question

cryotweaks · « **on:** 18 Oct 2005, 03:22 pm »

I am looking at an Acopian Dual Isolated output, 5v/12v power supply for my external hard drive and external dvd burner. They both require about 1 amp on each output, so could I purchase a single 5/12 power supply that supplied 6 amps on the 5v and 2.4 amps on the 12v to run both the hard disk and the DVD burner?

If I can, it would save me about $200.

Thanks in advance!

Vinnie R. · « **Reply #1 on:** 18 Oct 2005, 03:35 pm »

Quote from: cryotweaks

I am looking at an Acopian Dual Isolated output, 5v/12v power supply for my external hard drive and external dvd burner. They both require about 1 amp on each output, so could I purchase a single 5/12 power supply that supplied 6 amps on the 5v and 2.4 amps on the 12v to run both the hard disk and the DVD burner?

If I can, it would save me about $200.

Thanks in advance!

I have used that Acopian dual power supply before and I recommend it!

It will run warm, but that is normal for it.

Regards,

cryotweaks · « **Reply #2 on:** 18 Oct 2005, 04:02 pm »

Yes but will it power both my external hard drive and DVD burner?

BTW, I still need to get my Squeezebox over to you.

Occam · « **Reply #3 on:** 18 Oct 2005, 04:03 pm »

Yes - but if you can supply your own enclosure, you could save yourself some money with these very nice linear regulated dual output supplies. Heck, they're cheap enough so you could buy 2, brand new @ $17ea -
http://www.herbach.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=HAR&Product_Code=TM94PWS2647&Category_Code=PWS

I've not seen these, or equivalents, elsewhere for any less than $90

FWIW

cryotweaks · « **Reply #4 on:** 18 Oct 2005, 04:39 pm »

I noticed that the Acopian has a ripple of 1mv, while the Herbach has a ripple of 5mv. Is this significant to the point of spending an extra $200?

angelo · « **Reply #5 on:** 18 Oct 2005, 04:51 pm »

if you want to spend $0 you can just get an OLD AT power supply from an OLD computer, maybe you have one in the garage or a friend might. You can even use your expensive power cable for this switching power supply

angelo

Occam · « **Reply #6 on:** 18 Oct 2005, 04:59 pm »

Quote from: cryotweaks

I noticed that the Acopian has a ripple of 1mv, while the Herbach has a ripple of 5mv. Is this significant to the point of spending an extra $200?

If the powersupplies were to power audio equipment, the lower ripple, etc... of the acopians might offer better performance. But for a powering hard drives and dvd burners, absolutely not.

And as Angelo suggested, a switching PC powersupply would work, but given the low cost of the PowerOnes, I'd forgoe the potential extra noise on the mains from the switchers.

cryotweaks · « **Reply #7 on:** 18 Oct 2005, 06:04 pm »

Great information, thank you!