Setting up multisim (555 timer)

Thread Starter

umer0314

Joined Jul 29, 2009
29
I am designing a circuit on multisim and I am having problem doing that. I have a circuit already but it not working properly on multisim. I cant figure out how to set it up in multisim. When power on the circuit produces 20 pulses in 20 seconds and then after that it produces 1 pulse after every 60 seconds so a 59 second delay.

Frist step:

20 pulses in 20 seconds

Second step:

1 pulse after every 60 seconds (59 second delay) and it keeps repeating this 1 pulse after every 60 seconds until power tunred off. The first 20 pulses in 20 seconds only happens once in the beginning when power on.

I am attaching the circuit!
 

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