Is this float switch circuit really all I need?

Jul 26, 2007 3 Replies
M

I need to turn on a solenoid valve to let water in to a container whilst a float switch is down (n/c configuration).



I was just going to put the switch and the solenoid in series with a



240v AC supply.

Is this really all I need or is this rather naive?



Regards, Mark



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J

If the current and voltage rating of the switch is >= the voltage and current rating of the solenoid then that\'s all you should need. If it isn\'t, then you\'ll need to use the switch to drive a relay and the relay (in series between the mains and the solenoid) to drive the solenoid.
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J

That is almost exactly how washing machines fill to the apropriate level. (except they use a pilot tube pressure sensor)

Bye. Jasen

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