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[DPRG] Board indication of 120VAC

Subject: [DPRG] Board indication of 120VAC
From: Randy M. Dumse rmd at newmicros.com
Date: Wed Jun 1 13:49:41 CDT 2005

> However if you need to connect this to a microcontroller
> circuit like Rick pointed out, the neon light won't work.

In the old days, the NE2 was taped to a photosensor. These were
the beginnings of opto couplers we have today in solid state
form. The same can still be done today, you know, to have
isolation from the 120VAC side to the micro side.


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