The idea is that the system has to work with a variety of sensors
(powered at around 12V) and I don't use a particular sensor. It it about
PIRs, but can also be smoke detectors and all sort. I realised that the
voltage for the comparators is not an issue anymore, as I'm using a
voltage divider, so the 12V can be around 10V-14V without any problem.
Am I mistaking ?

Lucian
-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Jinx
Sent: 24 martie 2004 12:58
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE]: 12V and 5V Power Supply

> The comparators are feeded at the voltage provided as 12V

> 13.8V unrectified may power some sensors ? Isn't this dangerous
> for them ?

Can you tell us what the comparators and sensors are please, if
that's possible. I'm sure there's a circuit, probably using other parts
than those you're designing with now, that can be suggested for your
needs, and it's a good bet that the voltages required won't need to
be as rigid as you might think

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