On 24 Sep 2005 08:52:41 -0700, wrote:

So clearly we can say a 24v ac input box of tronics should run on dc -
but not will, as there will be the ocasional one that wont.

Obviously a well researched bit of work. Of the dozen or so devices
I have immediately to hand which require 12-24VAC precisely none will
run off 12-24VDC (or any other DC supply of any voltage).

A device with (for example) a transformer in the input circuit, as this
one turned out to have, will simply blow fuses if you connect DC to it.

It will? Of those dozen or so devices I have none would "blow a
fuse" if used on DC. None of those with transformers would blow a
fuse. About half would probably be damaged though including many
with transformers which would not blow a fuse.


--
Peter Parry.
http://www.wpp.ltd.uk/