- #1
shaunakde
- 2
- 0
Problem Statement:
1. Given that the beta of a transistor is 36, Vcc=5v, Vbb= 3.6V, Rc=440 ohm, Rb=640 ohm, find Ic, and Ib. Also find power dissipated across transistor.
Figure: http://yfrog.com/7hdiagram1j
Assume silicon diode. [Ie vbe = 0.7]
The attempt at a solution
I applied voltage equations on the collector and base loop. My equations are:
5 - 440Ic - Vce = 0 ------(1)
and
3.6 -40Ib - 0.7 =0 ------(2)
I got the value of Ib from equation 2.
Now I can't find Ic.
I tried using the following relation:
Ic = beta Ib.
But then Ic comes to 3.625 A which is wrong.
What am I doing wrong? How do I solve this?
1. Given that the beta of a transistor is 36, Vcc=5v, Vbb= 3.6V, Rc=440 ohm, Rb=640 ohm, find Ic, and Ib. Also find power dissipated across transistor.
Figure: http://yfrog.com/7hdiagram1j
Assume silicon diode. [Ie vbe = 0.7]
The attempt at a solution
I applied voltage equations on the collector and base loop. My equations are:
5 - 440Ic - Vce = 0 ------(1)
and
3.6 -40Ib - 0.7 =0 ------(2)
I got the value of Ib from equation 2.
Now I can't find Ic.
I tried using the following relation:
Ic = beta Ib.
But then Ic comes to 3.625 A which is wrong.
What am I doing wrong? How do I solve this?