How To Simulate or Make A BC547 Transisitor on EveryCircuit

Touch transistor. Touch spanner. Touch yellow at left to bring up full spec. Touch to select forward or reverse then use dial to change value.

This is not what he asked robert😂

yes you are right WTF....I am asking for the theory...the math of it.

No problem.

Perhaps WTF can help.

No I can't unfortunately, the only thing I know is that the forward beta is the hfe, which you can find in the bc547 datasheet, about the reverse beta I don't actually know.

Wikipedia has quite a lot of detail including equations. Whether it's what you're looking for I don't know. Scroll down to Ebers-Moll model.

Ok a bit late but for everyone learning. A transistor is basically a current control device. It’s function is current gain in other words Amplification. Each transistor in the real world is a dynamic device . Therefore it’s gain depends entirely on its use. In small input current applications it’s gain is denoted as hfe and in high output current as hFE. . Notice the capitals. “h” stands for hybrid . Note Everciruit simulate hfe as Beta which is the same or A/A meaning amps in vs amps out and the gain ratio. Here is the problem . hfe &hFE will have two values. This is because a Bc547b is a low power switch . If your switching high currrent like say a relay the Beta A/A will be say 100-300 . Typically for Bc547b is 180. So set A/A to 180 is sufficient. Hope this helps