Perhaps it should be [EE] instead, so I've changed it.

If I understand you correct, you want to leave the diode on the pcb, but =
move=20
the relay remotely.  I would think this is okay since the original purpos=
e of=20
the diode is to protect the circuitry that drives the relay, and it can d=
o so=20
on the PCB.

Now, not to open a can of worms here, but I read somewhere (some mfgr's t=
ech=20
doc, IIRC) that coil protection diodes may be great for the driver circui=
try,=20
but bad for the relay, so adding a zener in series with the shunt diode w=
as a=20
great solution.  Can't remember the exact details though.

Cheers,
-Neil.



On Wednesday 30 April 2003 01:37, Pang scribbled:
> Sorry for missing the tag...
>
> > Hi all pislisters,
> >
> > Happy Labour day. I have a question on driving an external relay. I w=
ould
> > like to know if it is appropriate to drive an external relay using on=
e
> > single wire? What i am trying to say here is that for PCB relay, the =
coil
> > and the shunting diode are usually placed very near to each other. As=
 for
> > external relay, one end of the coil is connected to the driver(PCB) w=
hile
> > the other is connected to ground (as for my case, it will the the car
>
> body).
>
> > Would that be appropriate with the diode so far away from the coil? H=
ope
>
> you
>
> > guys/gals understand my question.
> >
> > Best regards,
> > Pang
> >
> > --
> > http://www.piclist.com#nomail Going offline? Don't AutoReply us!
> > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body

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