>>
If I understand you correct, you want to leave the diode on the pcb, but
move
the relay remotely.  I would think this is okay since the original purpose
of
the diode is to protect the circuitry that drives the relay, and it can do
so
on the PCB.
>>

Remote diode MAY produce an initial spike at the relay due to wiring
impedance. The wiring will radiate this. How bad the affects will be will
depend on specific circumstance.


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

A full diode shunt of a relay coil slows release time markedly.
Adding a series zener decreases release time due to faster dissipation of
the stored energy.


        Russell McMahon

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