# Electronic Circuits/Determining Transistor modes

• Question 1 Determine the mode the NPN transistor is in based on the voltages measured at the terminals with respect to ground. Assume The simplified diode model with no threshold voltage.
Case Vc Vb Ve
A 5v 0v -1v
B 3v 0v -1v
C 2v 0v 2v
D 5v 0v 4v
E 5 1 2
F 0v 0v 0v
G 3v 0v 3v
H 10v 0v -2v
I -3v 0v -3v
J 5 11 -2
K 2 5 -3
L 7v 0v -10v
• Question 2 Determine the mode the PNP transistor is in based on the voltages measured at the terminals with respect to ground. Assume The simplified diode model with no threshold voltage.
Case Vc Vb Ve
A 5v 0v -1v
B 3v 0v -1v
C 2v 0v 2v
D 5v 0v 4v
E 5 1 2
F 0v 0v 0v
G 3v 0v 3v
H 10v 0v -2v
I -3v 0v -3v
J 5 11 -2
K 2 5 -3
L 7v 0v -10v
• Question 3 Determine the mode the NPN transistor is in based on the voltages measured at the terminals with respect to ground. Assume The simplified diode model with a Thershold voltage of Vbe(on) = .5v and Vbc(on) = .4v
Case Vc Vb Ve
A 5v 3v 0v
B 3v 0v -1v
C 2v 0v 2v
D 5v 0v -1v
E 5 10 2
F 0v 0v 0v
G -3v 0v 3v
H 10v 0v -2v
I -3v 0v -3v
J -5 11 -2
K 2 5 -3
L 7v 10v -10v
M 0v 10v -.1v
N 2.2v 1v -1v
O 7v 0v -3v