Timer Circuit

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senojev

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I need to design and build a timer circuit that meets the following criteria. I am a relative novice but very handy.

1. Switch to power timer circuitry

2. Switches a 12V DC circuit carrying 12A

3. Circuit powered for 5 seconds then off

4. Circuit repowers after 2 minutes for 5 seconds then off

5. Repeats cycle until power removed from timer

Seems a 555 would be a good basis from what I have read but need some advice.
 
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Something like this easy to setup, accurate in time intervals :

Pulse Sequence Generator / Smart Timer

Often users, developers, hobbyists need timed and qualified event generators, many resorting to 555 timers and the like. The venerable 555 has had a long run but its limited in accuracy and capability. This approach uses block language to create...
www.electro-tech-online.com


Regards, Dana.
 
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A single 555 circuit probably cannot do this. Multiple 555's maybe. However, this would be a piece of cake for a small single chip microcontroller. You would have to learn some programming. It is a useful and transferable skill.
 
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You can do what you want with one of these ready made Timer Modules:

XY-LJ02

 
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