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JoeH

Apollo Beach,FL

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Posted: 02/17/21 01:26pm Link  |  Quote  |  Print  |  Notify Moderator

Not RV related but figure the folks here will be able to provide some advice.
I want to have a 30 second or so timer that sends a 120v current to one device for 30 seconds, then switches and sends it to another device for another 30 seconds. That cycle would continue all the time.
Any thoughts ? I figure there might be some components on ebay if I only knew what to call them.
Thanks


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rlw999

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Posted: 02/17/21 01:40pm Link  |  Quote  |  Print  |  Notify Moderator

It's often useful to describe the entire problem you're trying to solve rather than just describing how you want to solve it -- someone may have a better way to do this than a power switch.

JoeH

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Posted: 02/17/21 01:44pm Link  |  Quote  |  Print  |  Notify Moderator

rlw999 wrote:

It's often useful to describe the entire problem you're trying to solve rather than just describing how you want to solve it -- someone may have a better way to do this than a power switch.

It's pretty simple.... as I said, I have 2 devices( lights), 120v , that I want to alternate powering on at about 30 sec intervals.

KMLsquared

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Posted: 02/17/21 01:57pm Link  |  Quote  |  Print  |  Notify Moderator

You need some time delay relays. There are delay on and delay off types all programable.


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agesilaus

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Posted: 02/17/21 01:58pm Link  |  Quote  |  Print  |  Notify Moderator

Maybe this if the description was written in plain english.


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time2roll

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Posted: 02/17/21 01:59pm Link  |  Quote  |  Print  |  Notify Moderator

Here is a loop timer on ebay. Then you just need a relay so when the timer has one on it will turn the other off.

OK ebay links don't always work. Search this: Timer Switch Outlet Nearpow Multifunctional Infinite Loop Programmable

Probably more than one way to do this.


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Boon Docker

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Posted: 02/17/21 02:14pm Link  |  Quote  |  Print  |  Notify Moderator

Theses two items should accomplish what you are trying to do.

https://tinyurl.com/1etvb485

https://tinyurl.com/fv9qpoxf

rlw999

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Posted: 02/17/21 02:46pm Link  |  Quote  |  Print  |  Notify Moderator

This may do what you want:

Programmable Traffic Light Controller


It's got many modes of operation (including red-green flashing, which should work for your application) with programmable flash times up to 2 minutes. The outputs are rated up to 240VAC and 640W (probably @ 240V, so around 2.5A per contact, you might want to add output relays).

jdc1

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Posted: 02/17/21 04:38pm Link  |  Quote  |  Print  |  Notify Moderator

agesilaus wrote:

Maybe this if the description was written in plain english.


Pretty cool.

dieseltruckdriver

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Posted: 02/17/21 05:18pm Link  |  Quote  |  Print  |  Notify Moderator

I use several of these at work. A couple of them have been in use for a few years, and no failures yet. Use a couple cheap relays, one NO and one NC to achieve what you are trying to do.

Or make it easier and just use a cheap PLC. [emoticon]


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