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need to turn switch on/off at 1 - 5 second intervals

The subject pretty well defines my quest: need to turn switch on/off at 1 -
5 second intervals
Here's some background; I have a thermoblock that generates steam that is
too *wet*. I'd like to mount a valve (solenoid?) between the water mains &
the thermoblock that can be opened/closed at varying intervals. Can someone
point me toward a VERY cheap way to do this?
Robert Harmon
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Reply to
Robert Harmon
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Generally speaking, things in this power and timing range (1-5 secs, AC Water solenoid) are cheapest when done mechanically. Think motor, cam and microswitch.
Reply to
Benj
Assuming you have a mains powered solenoid:
+12 ---+----------------------------+-------+ |a | | [D1] [Relay] [D2] | | |a +-----+-----------+---+ +-------+ | | | | | | [1K] --------- | | | | 8 4 | | | +--------|7 | | | | | | | | P | 555 | | | O
Reply to
ehsjr
An equivalent adjustable commercial repeat cycle relay is available for about $54 - may not be "VERY cheap"
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are available 12/24/120V AC/DC and 240VAC for the timer, with isolated contacts.
New solenoid valves might start around $20 - depends on flow rate.
-- bud--
Reply to
Bud--

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