# Why are circuit results different from theorised?

From the following circuit:

I got the following results in comparison to my theorized calculations:

Why were my result different to my calculations?

Here is my calculations:

Equipment used:

• Agilent E3630A
• Agilent 33210a
• Agilent MSO-X2012a
• Agilent U3401A
• It would help a lot if you provided the process and calculations you used to get your theorized values.
– jonk
Nov 7, 2019 at 7:22
• Note how your $V_{ce}$ is very small in the measurement. The transistor now operates in saturation mode. I suspect that you have an error in the circuit that you're measuring. To investigate, also compare the voltages at base, emitter and collector ($V_b, V_e, V_c$) Nov 7, 2019 at 7:33
• I have provided my calculation work flow. Nov 7, 2019 at 8:01
• Do you assume that no voltage is applied to Vin? And are you calculating and measuring at DC steady state? Nov 7, 2019 at 8:14
• Just one example: in your calculation you use $\beta=200$. Where do you get this value from? What reason do you have to assumne that it is the correct value for your real component?
– Curd
Nov 7, 2019 at 8:33