a. Wire the circuit shown in figure 2.
V
BB
Microammeter
Milliammeter
Voltmeter
1 k$\Omega$
A
47 k$\Omega$
A
2N2222A
Fig.2
V
cc
RUN III: CUT OFF AND SATURATION
a. Set $V_{cc}$ = 10V in figure 2.
b. Open the base circuit (disconnect the 47k$\Omega$ resistor from the transistor). The
transistor is now biased at cutoff. Record $I_B$, $I_C$, and $V_{CE}$.
c. Reconnect the base circuit.
d. Increase $V_{BB}$ slowly from 0 to 5V, noting the effect on $I_B$, $I_C$, and $V_{CE}$. Record your
observations.
e. Continue increasing $V_{BB}$, noting that $I_C$ stops increasing while $I_B$ continues to
increase. The transistor is now biased at saturation. Record $I_C$ and $V_{CE}$ at saturation.
