> > What's wrong with latching relays?
> 
> > Apart from price, availability, unknown start-up states & 
> extra pins 
> > and/or circuitry needed to turn then off, that is
> 
> Yes, you're absolutely right. We're being too close-minded. 
> I'll get on to changing the expensive extruded housing, 
> budget, PIC, customer requirements and s/w right away
> 
> Thank you Tony, mine eyes have been opened !!!  ;-)


See, minor quibbles.  Your vibration problem is solved, and an added bonus
is that power consumption goes down.  Slap a 'we're green friendly' sticker
on it and you're done.

Tony

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