I need to use 12 or 24vdc to activate a 120vac circuit. I have that down. I've found any number of 24vdc relays, reasonable amperage, very inexpensive.
The problem is I'd like to have an adjustable timer, ideally 15 seconds to three minutes (approx range) to activate "off delay". When the 24vdc circuit is opened, the 120vac will continue for the set time, and then shut off.
The following suits my needs with two exceptions. It's still pricey.. and it adjusts to less than two minutes on the outside range.
**broken link removed**
The signal I have available is 24vdc. There are a few ways to approach this. A 24vdc off delay timer (which I cannot locate in a web search) connected to a standard 24vdc 10amp (min) relay. Or a 12vdc relay (low amp) connected to a 120vac delay timer. I'm not sure which is the better option.
Another board advised that I just use a 12vdc relay and a 555timer IC. But by the time I got the pin connections figured out and located the right potentiometer, etc, etc, it might be more headache than forty two dollars worth.
Any advice???? Know a better source for any 24vdc relays w/delay off?
Thanks so much
The problem is I'd like to have an adjustable timer, ideally 15 seconds to three minutes (approx range) to activate "off delay". When the 24vdc circuit is opened, the 120vac will continue for the set time, and then shut off.
The following suits my needs with two exceptions. It's still pricey.. and it adjusts to less than two minutes on the outside range.
**broken link removed**
The signal I have available is 24vdc. There are a few ways to approach this. A 24vdc off delay timer (which I cannot locate in a web search) connected to a standard 24vdc 10amp (min) relay. Or a 12vdc relay (low amp) connected to a 120vac delay timer. I'm not sure which is the better option.
Another board advised that I just use a 12vdc relay and a 555timer IC. But by the time I got the pin connections figured out and located the right potentiometer, etc, etc, it might be more headache than forty two dollars worth.
Any advice???? Know a better source for any 24vdc relays w/delay off?
Thanks so much