AVR-Chat

I think you want to say "common emitter".

+ sometimes a snubber circuitry is also added, to
solve EMI/EMC problems.

MuratK

--- Paul Maddox <P.Maddox@signal.qinetiq.com> wrote:

> Daniel,
> 
> > oops, posted the wrong schematic... mine was still
> wrong, but I did
> > have the transistor...  The one I ment to post is
> > http://www.dpicts.com/Tiny15L-LaserDetector-2.jpg 
> which has the
> > NPN, but I hooked up the transistor the way it is
> shown on page 3-2
> > of the STK500 manual...
> 
> ok, don't do this, you'll still be trying to sink
> the current from the relay
> through the AVR.
> 
> Look for an emitter follower schematic.
> 
> Paul
> 
> 



		
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