Mark
Teacher
6 (10 cents) For the circuit shown as following, $\beta_1 \approx \beta_2 \approx 50$, $r_{be2} = 1k\Omega$. Please:
(1) describe the function of emitter resistor $R_e$.
(2) calculate the differential mode voltage gain($A_{ud}$).
(3) calculate the differential mode input resistance ($r_{id}$)and output resistance ($r_{od}$)
$+U_{cc}(+16V)$
$R_c$
$4k\Omega$
$+u_o -$
$R_c$
$4k\Omega$
$R_L$ $8k\Omega$
$R_w$ $100\Omega$
$u_{id1}$ $R_s$
$100\Omega$
$R_e$
$4k\Omega$
$R_s$
$100\Omega$
$-U_{EE}(-16V)$
$u_{id2}$
