Hey all, I ran into a wall while trying to design a common emitter amplifier. I was wondering if someone here would be able to point me in the right direction: Specifications: Common Emitter BJT amplifier with an Emitter Resistance and two coupling capacitors (assumed infinite for now) Transistor 2N2222 (assume =100 and ) Design Goals: Voltage Gain of -20 V/V Output Voltage Swing ΔV=10V peak-to-peak Input Resistance greater than 10kΩ Attempt at Solution: I thought to set to best bias the circuit. Thus . This would give a transconductance of . Since the signal generator impedance is low: The gain equation is . We can solve for . Which makes , , and . I'm using a rule of thumb and making the current through the voltage divider equal to one tenth of the emitter current. Thus . Since the sum of the two resistances needs to equal and the voltage divider has to make , then and . Finally, the collector current will be at a maximum when the amplifier is in saturation: So by my math, the output signal should be linear up to 13Vpp. However, when I simulate this in SPICE (0.5V signal at 1kHz), my output signal is clipped above at 6.5V. I am sure that there is small mistake somewhere, but I have been unable to pick it out. I can provide more detail on how I derived my equations if necessary. Any suggestions on where to go from here? P.S.: Sorry for the poor formatting, this is my first post!