OT: AC/DC adaptors

[Alan Dayley]

On Wed, Jul 22, 2009 at 2:42 PM, Josef Lowder<joe at actionline.com> wrote:
> Does an AC/DC adaptor need to be an exact match to be safe and not
> damage electrical equipment?

Does not HAVE to be exact but you are right to be cautious.

> I have several dozen "left-over" AC/DC adaptors, but none exactly
> match a small Radio Shack mixer that is going through 9-volt batteries
> too fast.  And, rather than buying yet another such adaptor, I went
> through my collection of left-overs to see if I could find one to
> match.  Close, but not quite.
>
> I need a 9v 100 mA adaptor; and in my collection I have one 9v 80 mA
> and one 9v 210 mA.  Could either of those be used safely?

80 is less than 100 so there is little chance the equipment will be
damaged with that one.  It may not work, but no damage.

210 is much larger than 100 so don't try that one!

Alan