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HW 6 - 6.1 - 6.3 Use the Figure below - Assume forward active mode. $V_{CC} = 5V$ $R_C = ?$ $R_{B1}$ $C$ $V_C = 3V$ $V_o = $ $R_S = 1k\Omega$ $\beta = 100$ $R_{B2}$ $E$ $\alpha = 0.99$ $V_A = 100$ $v_s \leq 10mV$ $V_T = 25mV$ $R_E = 1k\Omega$ $R_L = 1k\Omega$ $I_S = 1 \cdot 10^{-15} A$ 6.1 Determine and write down the small signal and large signal model for the circuit above. Determine an expression for $R_{B1}$ and $R_{B2}$ to yield a particular $I_C$ Determine expression for $R_{IN}$ with respect to $R_{B1}$ and $R_{B2}$. For a collector current of 1mA find $R_{B1}$ and $R_{B2}$, and $R_C$. Can you find $R_{B1}$ explicitly (no - explain why). 6.2 For the circuit above, determine $R_{B1}$ and $R_{B2}$ to maximize power gain. 6.3 Eliminate the capacitor between the emitter of the transistor and the ground. Re-write the small signal model. Determine, $R_{IN}$, $R_{OUT}$, and $A_v$.

          HW 6 - 6.1 - 6.3 Use the Figure below - Assume forward active mode.
$V_{CC} = 5V$
$R_C = ?$
$R_{B1}$
$C$
$V_C = 3V$
$V_o = $
$R_S = 1k\Omega$
$\beta = 100$
$R_{B2}$
$E$
$\alpha = 0.99$
$V_A = 100$
$v_s \leq 10mV$
$V_T = 25mV$
$R_E = 1k\Omega$
$R_L = 1k\Omega$
$I_S = 1 \cdot 10^{-15} A$
6.1 Determine and write down the small signal and large signal model for the circuit above.
Determine an expression for $R_{B1}$ and $R_{B2}$ to yield a particular $I_C$ Determine expression for $R_{IN}$
with respect to $R_{B1}$ and $R_{B2}$. For a collector current of 1mA find $R_{B1}$ and $R_{B2}$, and $R_C$. Can you
find $R_{B1}$ explicitly (no - explain why).
6.2 For the circuit above, determine $R_{B1}$ and $R_{B2}$ to maximize power gain.
6.3 Eliminate the capacitor between the emitter of the transistor and the ground. Re-write
the small signal model. Determine, $R_{IN}$, $R_{OUT}$, and $A_v$.

HW 6 - 6.1 - 6.3 Use the Figure below - Assume forward active mode.
VCC = 5V
RC = ?
RB1
C
VC = 3V
Vo =
RS = 1kΩ
β = 100
RB2
E
α = 0.99
VA = 100
vs ≤ 10mV
VT = 25mV
RE = 1kΩ
RL = 1kΩ
IS = 1 · 10^-15 A
6.1 Determine and write down the small signal and large signal model for the circuit above.
Determine an expression for RB1 and RB2 to yield a particular IC Determine expression for RIN
with respect to RB1 and RB2. For a collector current of 1mA find RB1 and RB2, and RC. Can you
find RB1 explicitly (no - explain why).
6.2 For the circuit above, determine RB1 and RB2 to maximize power gain.
6.3 Eliminate the capacitor between the emitter of the transistor and the ground. Re-write
the small signal model. Determine, RIN, ROUT, and Av.

Added by Jose Carlos W.

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