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How to make a time delay relay


 

I'm beyond beginner level, but not too much, so there is where I am
at.
I am trying to come up with two things.
1. My air compressor sits in a sound insulated box in my garage. The
box has vents and I have a fan the circulates air whenever the
compressor runs. What I would like to do is have the fan come on with
the compressor and then stay on for 30-60 seconds (doesn't have to be
accurate) after the compressor shuts off. The fan is 120vac and draws
1.2 amps.

2. I have a 120vac valve on the bottom of the tank to release any
moisture. I would like to make something that will open the valve for
a few seconds (2-5) when the compressor starts or when it shuts off.
Any thoughts on that?

Thanks in advance for any ideas and help.

Larry

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