On Sun, 2007-04-01 at 10:19 -0700, Vasile Surducan wrote:
> On 4/1/07, wouter van ooijen <wouter@voti.nl> wrote:
> > > In theory, 5V (or 6v) low-current relays like those used in
> > > series with
> > > telephone lines could work. Diode in antiparallel needed anyway!
> >
> > What current do they use? IIRC a PIC output is spec'ed to a few mA!
> > (despite what p1 of most datsheets say)
> 
> Wouter, I've seen relays runing at 5V and sinking 8mA.

True, although personally I'd still never connect the PIC output
directly to the relay, it's just asking for trouble.

BJTs are stupidly inexpensive, if you're already using a relay, the
additional cost of the BJT is barely visible.

TTYL

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