Hi,
I'm trying to understand the fundamentals of transistors but I'm having a hard time with getting my circuit to work the way I want in real life.
My circuit is a basic common emitter configuration (I think):
View attachment 132791
The beta value of the transistor is 150, so I calculated the current through the collector resistor in theory and it should be about 63mA. I confirmed it by running it in a simulator and the results were the same.
In real life, I get a current of about 53mA. I thought that was pretty strange and after doing some more experimenting I removed the collector resistor entirely and saw that the collector current rose to 63mA. Now I know the 47ohm resistor at 5V should pass about 106mA so I can't understand why the current is less when the resistor value is added. I removed the resistor value in the simulator and I got the same 63mA collector current (it didn't increase at all).
It's probably something really simple, but any help would be much appreciated!
Thanks,
Judd