New Classic Finds and etc. (Long)

From: Gordon JC Pearce <gordonjcp_at_gjcp.net>
Date: Mon Jan 26 09:57:19 2004

On Mon, 2004-01-26 at 15:26, Doc Shipley wrote:
> On Jan 25, 2004, at 11:15 PM, Lyos Norezel wrote:
>
> > Doc... this is a BAD idea... I've fried numerous devices by using the
> > wrong power rating... even if it was only 1mA off. The voltage almost
> > never matters... as long as the power is correct. Hope this gets to u
> > before you fry your machine.
>
> ????
>
> That's opposite everything I was ever taught. As long as the voltage
> and DC polarity are correct, and the power supply provides at least
> enough amperage for the device, the device itself determines the amount
> of power it draws. The big worry is that a slightly under-amped PSU can
> toast itself trying to keep up.
>
>
> Doc

Yup. Many years of running things of bench PSUs have taught me this.
That's not to say I've never fried stuff, but usually only when I've
inadvertently wound it up to +/-30v and really cooked stuff. Current
has never been a problem (although running my fully loaded Acorn Atom
did make the bench PSU heat up quite a bit).

Gordon.
 
Received on Mon Jan 26 2004 - 09:57:19 GMT