Programmable delay solenoid? - Team Camaro Tech
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post #1 of 8 (permalink) Old Sep 18th, 13, 12:37 PM Thread Starter
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Programmable delay solenoid?

I am looking for a 12v solenoid that will keep the contacts closed as long as my switch is depressed then when the switch opens I want a programmable (less than a second) delay before the contacts in the solenoid open. Does anyone know of such an animal? Low amperage situation.

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post #2 of 8 (permalink) Old Sep 18th, 13, 02:31 PM
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Re: Programmable delay solenoid?

Here's a place to start:
http://www.ionnic.com/electrical/swi...ids/timer.html

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post #3 of 8 (permalink) Old Sep 18th, 13, 03:59 PM Thread Starter
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Re: Programmable delay solenoid?

Thanks, I had seen that, the timers I have found won't go under 1 sec.

I need adjustable in hundredth of sec intervals or at the min tenth of sec.

I am probably going to have to build a timer/relay board, it won't be very difficult just seeing if there was something available commercially.

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post #4 of 8 (permalink) Old Sep 18th, 13, 04:05 PM
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Re: Programmable delay solenoid?

james, get a Drag race delay box,
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post #5 of 8 (permalink) Old Sep 18th, 13, 05:16 PM Thread Starter
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Re: Programmable delay solenoid?

I already thought about a drag race delay box, however it is way more technical and more capabilities than I need.
I can get a hella 12v 10amp relay with 1 sec delay for $50 and that is probably what I will try, or may go the build it route.

James
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post #6 of 8 (permalink) Old Sep 18th, 13, 06:57 PM
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Re: Programmable delay solenoid?

You can build a an IC counter and have a driver energize, or de-energize an electronic relay.
Check Newark Electronics, DigiKey, Allied Electronics, and Mouser for a programmable relay. I believe I remember seeing an analog relay tunable to the 0.1 second.

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post #7 of 8 (permalink) Old Sep 18th, 13, 07:30 PM
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Re: Programmable delay solenoid?

What are you trying to accomplish with this set-up? What's it for?

If the timing is not critical, you could simply use a relay with an appropriate sized capacitor in parallel with its coil. For adjustability you could have various capacitor values with switches to either add them or remove them from the coil circuitry.
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post #8 of 8 (permalink) Old Sep 19th, 13, 05:13 AM
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Re: Programmable delay solenoid?

http://www.digikey.com/product-searc...=0&pageSize=25

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