I've tried to make the following circuit (both physically and simulated):
There is one thing I can't understand, I tried measuring voltage across R1 and R2, I though it would be the same, but instead as shown in simulink, the R2 voltage shows ~4.8V and R1 shows ~4.3V (on physical model multimeter has shown 5V and ~4.3V
Why would voltage across R1 be less 5V (4.3V) as if I was measuring the voltage drop on base-emitter of Q1? On physical model the C4881 transistor was used. While on simulink some standard settings were there.