HI guys.
I have a problem to simulate a simple 555 circuit with OrCad tool. Output of 555 is closet to zero( see red scope) I checked my circuit multiple times, and I didn't see a problem. What went wrong? I know the 555 that I used in the schematic works properly, because I used same one to build a square wave output, and it worked.
As you see in my circuit I didn't use a LED, because all LEDs that I tried to simulate with said " ERROR -- Less than 2 connections at node N062761" whenever I ran the simulation. In my library there are so many different type of LEDs but none of them work. I want to use LED with FV=3V. What should I use?
Question Summary:
What's wrong with my circuit?
What component of LED should I use for the simulation?
Merry Christmas!
Justin
I have a problem to simulate a simple 555 circuit with OrCad tool. Output of 555 is closet to zero( see red scope) I checked my circuit multiple times, and I didn't see a problem. What went wrong? I know the 555 that I used in the schematic works properly, because I used same one to build a square wave output, and it worked.
As you see in my circuit I didn't use a LED, because all LEDs that I tried to simulate with said " ERROR -- Less than 2 connections at node N062761" whenever I ran the simulation. In my library there are so many different type of LEDs but none of them work. I want to use LED with FV=3V. What should I use?
Question Summary:
What's wrong with my circuit?
What component of LED should I use for the simulation?
Merry Christmas!
Justin
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