A small signal source V_i(t) = A cos 20t + B sin 10⁶ t, is applied to a transistor Amplifier as shown in fig. The transistor has $$\beta $$ = 150 and h_ie = 3k$$\Omega $$ , which expression best approximates $${V_0}\left( t \right)$$ ?

In the following transistor circuit, V_BE = 0.7V, r_e = 25m/I_E, $$\beta $$ and all the capacitances are very large.

The Value of DC current I_E is

In the following transistor circuit, V_BE = 0.7V, r_e = 25m/I_E, $$\beta $$ and all the capacitances are very large.

The mid-band voltage gain of the amplifier is approximately

In a transconductance amplifier , it is desirable to have