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Donner Dp-1 Guitar Pedal Power Supply 10 Isolated DC Output

Posted: Wed Apr 25, 2018 10:09 am
by Confuzzled
https://www.amazon.com/dp/B00WHLLDWO/re ... 65150&sr=3

I could use another power supply... I just don't know if I trust it not to burn down the house.

Re: Donner Dp-1 Guitar Pedal Power Supply 10 Isolated DC Out

Posted: Wed Apr 25, 2018 11:49 am
by fldrvr
So I'm fairly certain that when they say isolated they mean the whole supply but the individual taps are not isolated from each other. It's more like a big One Spot. I looked at these and the Caline ones a while back when i was searching. I may be remembering wrong, tho.

This helped me: http://stinkfoot.se/power-supplies

Re: Donner Dp-1 Guitar Pedal Power Supply 10 Isolated DC Out

Posted: Wed Apr 25, 2018 3:46 pm
by Confuzzled
fldrvr wrote:So I'm fairly certain that when they say isolated they mean the whole supply but the individual taps are not isolated from each other. It's more like a big One Spot. I looked at these and the Caline ones a while back when i was searching. I may be remembering wrong, tho.

This helped me: http://stinkfoot.se/power-supplies

I'm not quite understanding the "isolated" part.

Re: Donner Dp-1 Guitar Pedal Power Supply 10 Isolated DC Out

Posted: Wed Apr 25, 2018 3:56 pm
by oldangelmidnight
I've got a couple of those cheapo supplies. There's sometimes noise when powering certain pedals on the same supply but they're mostly pretty quiet. They haven't burned my house down even once.

Re: Donner Dp-1 Guitar Pedal Power Supply 10 Isolated DC Out

Posted: Wed Apr 25, 2018 5:37 pm
by Jero
oldangelmidnight wrote:I've got a couple of those cheapo supplies. There's sometimes noise when powering certain pedals on the same supply but they're mostly pretty quiet. They haven't burned my house down even once.
Same

and no, each output is not isolated from each other on the ones I've seen/used.

Re: Donner Dp-1 Guitar Pedal Power Supply 10 Isolated DC Out

Posted: Tue May 01, 2018 10:11 am
by fldrvr
I'm not technically savvy, but I think in voodoo and others like it, each tap has it's own transformer inside, which prevents noise from being introduced into the signal.

The cheaper ones don't.

It's like if you daisy chain analog/digital pedals, sometimes there is noise introduced into your signal because the power interacts somehow. The power supply should prevent that. Really, it depends on your setup- if you've got all analog I think you should be OK with a one spot daisy chain or the like as long as you have enough mA to cover the pedal draw.