I designed a simple circuit in multisim, all it does is have 4 lights stay solid and 3 lights flash, and when there respective switch is turned off the light turns off. I did the flashing by using a 555 timer to get a pulse and a comparator to clean it up. I used a virtual comparator in Multisim and I purchased a LM339N from radio shack, but it doesn't work. I tried it in Multisim and it doesn't work in there either. I don't understand what I'm doing wrong. Any help would be greatly appreciated.
Thanks
Sean
Thanks
Sean