I've created a circuit, which a programmable controller activates a relay in a continuous repeating cycle of 10 milliseconds on, 10 seconds off.
I want to replace the controller with a oscillator to trigger the relay at the repeating cycle stated above. Is this even possible, considering the very low frequency I require? If someone can point me in the right direction it would be appreciated.

Thanks!

 

Yes, it is doable but you will end up with a number of chips vs a single microcontroller chip.

10ms on, 10000ms off is 1:1000 duty cycle.
If the times are not critical and you can accept 1:1024 duty cycle then you can arrive at a simple solution.

 

You are asking for a 1000 to 1 ratio. 2^10 = 1024
CD4020 or CD4040 can get pretty close.

 

Great minds think alike.

 

Thanks for the info! I'll look into this IC.

 

Great minds think alike.

Or got the same book...

 

Or got the same book...

Not likely. MrChips is so different from me that I have difficulty understanding him. I got this information from, National Semiconductor CMOS Logic Databook, 1988 edition, when I needed a time stretcher for a 555 circuit.

 

Nah. I am the erudite one, #12 is more pragmatic. We usually end up with the same conclusion anyhow. That's what I like about him.

 

Thanks...I think.

I don't have as many hammers as you, but if I choose my nails properly, I can appear to be smart on this site.
and I promise, learning which nails to choose didn't happen overnight!

 

Thanks...I think.

I don't have as many hammers as you, but if I choose my nails properly, I can appear to be smart on this site.
and I promise, learning which nails to choose didn't happen overnight!

Nice segue there, #12...