Here Is A Diagram Of The Above Mentioned Circuit.

Attached Files

10 STEP ROCKET TRIGGER.pdf (16.4 KB, 29 views)

 

Or better still use a CD4060, only one IC.

You could use a micro but that would involve programming.

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I can see one error on the schematic. Pin 2 is connected to pin 1.(If you follow the line from pin 1 down to the capacitor connected to pin 5 there is a junction point that shows pin 1 connected to pins 2 and 6. This wrong. Take the junction dot off.

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Thank you for bringing that to my attention k7. That was not meant to be a connection node there. By moving some parts it moved the node as well. This new schematic will address that. As you can see the node is now moved back where it belongs to the lower capacitor off pin5. Again Thank you sir!

To Hero: I have never used cd4040 or cd4060 are these chips Johnson counters with self clocking (do not need external clock or xtal)?

Attached Files

10 STEP ROCKET TRIGGER.pdf (16.4 KB, 9 views)

 

A CD4040 is just a binary counter. It can divide an external clock signal by up to 4096. Its 12 outputs are the clock divided by 2, by 4, by 8, by 16, etc.

A CD4060 has an RC or crystal oscillator and a binary counter. It can divide its clock by up to 16,384. Its counter does not have all binary outputs available.

A CD4541 also has an RC oscillator and a binary counter. It has automatic reset if you want or not and it can stop at a certain count if you want or not.
Its output is selectable to be high or low.

Other timer ICs are available. One has a monostable output.

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