Re: Interfacing 5V to unknown 10-30V signal

larwe_at_larwe.com
Date: 12/17/04 

Date: 17 Dec 2004 12:44:10 -0800

Hi Joe,

There are numerous rails (+5, +10, +12, +24, +48, +90 and 95VAC)
running around the appliance, because it is put together out of a lot
of modules that weren't originally intended to be integrated. I didn't
design the appliance, I merely have to add intelligence to it. I was
planning to run that +5V along with the actuator signals, purely to
power the interface (which would be on a separate, replaceable PCB).
The main circuit itself has a totally separate power supply.

A few mA sink on the input should be no problem.

I have to firm up what exactly I am talking to here, it's very
open-ended and I hate that. But thank you for the suggestion.

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