I am working on a 555 timer project and I really need help with it. The objective to my project is to design a 555 timer on multisim that can do the following tasks:
First task is to give a output voltage pulse for 20 seconds from the beginning,
Second is to give a output voltage pulse once every 60 seconds after the 20 seconds are done in the first task.
I am not sure if it needs two 555 timers and which resistors and capacitors I should use and how would I do the switching if it needs one between the two task and how would I trigger the controller, for example a push button or something else.
Thank you
First task is to give a output voltage pulse for 20 seconds from the beginning,
Second is to give a output voltage pulse once every 60 seconds after the 20 seconds are done in the first task.
I am not sure if it needs two 555 timers and which resistors and capacitors I should use and how would I do the switching if it needs one between the two task and how would I trigger the controller, for example a push button or something else.
Thank you