Problem $3$: Common$-$Emitter Voltage Amplifier Analysis $(0$ to $35$ points$)$

Figure $3$: Common Emitter Amplifier

This PSPICE activity has multiple objectives:

See the practical DC performance of the BJT amplifier $-$ exact $V_{BE}$ and $$ values.

Learn how to easily modify the Q$-$Point of the amplifier.

Learn how to measure the voltage gain in Transient.

See the effect of the Early Effect on the voltage gain.

Learn how to easily modify the amplifier's voltage gain.

Observe the BJT total voltages $-$ small$-$signal AC on top of a DC$.$

Compute small$-$signal parameters and later calculate the small$-$signal gain of the amplifier.

Refer to the above Schematic diagram in Figure $3.$ The input signal is VSIN with an amplitude of $5$ mV and a frequency of $1$ KHz $.$ The resistors $Rb1,Rb2,Re$ are all part of the amplifier DC biasing, selected to provide an approximate emitter DC current of around $1$ mA $.$ The collector resistor Rc and the load resistor Rload play a major role in determining the voltage gain of the amplifier, designed to be approximately $-100.$ All capacitors are $100$uF$.$ These capacitors act like short circuits at the frequency of $1$ kHz $,$ but they block DC signals.

Useful formulas:

$I_E=\frac{V_{BB}-V_{BE}}{R_E+\frac{R_B}{+1}}$