On 04/01/2019 11:27 AM, Gene Heskett wrote:
I'd have done the same, except I'd have added a flyback diode across the
solenoid to absorb the shutoff pulse from the solenoid. Perhaps with a
small r in series to absorb more of the stored energy in the R.
I'm pretty sure the diode must have been there, or it would
have only operated ONE time!
Since this was in a safety system, I was a bit hesitant to
be so bold with this change, but, my circuit WORKED, the
original required frequent tweaking, maybe as room
temperature changed or like voltage changed.
Actually, it seems like you did exactly what a good designer should have
done in the first place.
Yup, that's what I thought, too.
Jon
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