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Hi, I am new to Circuit Lab and electronics although I studied the theoretical side when I studied theoretical physics some 30 years ago, so you will forgive me if I am wrong. I have been testing the simulation on the current flow of a 1N4148 Silicon Diode against the manufacturer's specs. For the life of me I cannot get the graphs on Circuit Lab to resemble anything like those on the specification, especially for reverse bias. The Vbr is 75V but even if I run the simulation to 100V the current flow stays at 2.520nA which means the simulator is not recognizing the breakdown voltage. To see whether I was losing my mind or not I subscribed to DoCircuits. I set up the same simple experiment and the output graphs when doing a sweep are perfect. Am I not using the simulator in Circuit Lab properly or is there a bug in the software?

Please Help

Hi Micheal,

Whilst I can't comment on the accuracy of CL's 1N4148 simulation model, it might be a good idea if you can make your example circuit public so everyone can see what - if anything - might be awry in it?

:)

Thanks, I'll do so

Thank you I will work through these websites