At 07:59 11.02.2003 -0800, you wrote:
Hi,Most 5V digital semiconductors can take 5.5V without taking damage. Just put on a 5.5V Zener diode, and let the fuse on the power supply do the rest - if there is one. You may have to add it to your circuit if you're not sure. The Zener diode perfectly fits into the circuit that filters the digital "pollution" out of the power lines, add it somewhere on the 5V side. If you have a current-compensated coil, I'd put it _before_ that (PSU side!), because those coils are usually rated only slightly above the current that your circuit needs.
I have a question about protecting a circuit from an overvoltage condition. We
have a new device that we are planning to use a regulated 5V wall-wart type
device for power. They have also requested overvoltage protection in case
someone plugs in a 6V or 8V unregulated supply by accident. My expertise
is mostly digital so I am not sure what the best and cheapest way to do this
would be. Thanks in advance for any help or pointers.
ciao,
--
Jens Sch�nfeld
(from Germany, a little paranoid about CE as you may have guessed :-))
--
Author: Jens =?iso-8859-1?Q?Sch=F6nfeld?=
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