Hello. Please help. I need circuit for this.
astable ne555 circuit for starting motor 12v dc.
Motor start and run forward about 30 sec, than stop about 5 sec and then start reverse about 10 sec, again stop 5 sec and start forward 30 sec ....... continous
This is dc motor reversing circuit with pause between forward and back
Thanks advance

 

Although possible, it would be complicated. Have you thought about using a microprocessor? Code would be fairly easy with one of them. Then you could use an H-Bridge for the forward/reverse function with the micro doing the timing/sequence.

 

Thank you Bill... But i didnt work with microprocesors. I know how h bridge work. I tested motor with astable curcuit ne555 with h bridge and he works but i dont have pause (stop) between forward and back. Motor running fast forward and immediately fast backward. Thank you for reply

 

You could do it using a couple of 555's and a Flip Flop.

Ramesh

 

You could also do it with an H-bridge driven by a CD4017 counter with a 5 sec clock period. Counts 1-6 = forward, count 7 = off, counts 8-9 = backwards, count 10 = off.