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Common Emitter Amplifier in PartSim

PartSim is used in this example to simulate the Common Emitter Amplifier. The base bias voltage is set with the voltage divider arrangement. The input signal is amplified by the 2N2222 NPN transistor. Coupling capacitors are used to separate and block any DC component from the AC signals. Also shown is a bypass capacitor CE that is open at low frequencies but bypasses the emitter resistor at high frequencies, increasing the gain. This is a very common arrangement for BJT’s and produces a stable amplifier.

RL = 1.2K CF18JT10K0 CF18JT10K0CT-ND RES 10K OHM 1/8W 5% CF AXIAL
RE = 220 CF18JT10K0 CF18JT10K0CT-ND RES 10K OHM 1/8W 5% CF AXIAL
R1 = 20K CF18JT10K0 CF18JT10K0CT-ND RES 16K OHM 1/4W 5% AXIAL
R2 = 3.6K ERD-S2TJ622V P6.2KBACT-ND RES 6.2K OHM 1/4W 5% AXIAL
C1 = 1uF ECA-1HM010 P5174-ND CAP ALUM 1.0UF 50V 20% RADIAL
CE = 1uF ECA-1HM010 P5174-ND CAP ALUM 1.0UF 50V 20% RADIAL
C2 = 1nF FK18X7R1H102K 445-5291-ND CAP CER 1000PF 50V 10% RADIAL
Q1 = NPN — PN2222ABU PN2222AFS-ND TRANSISTOR AMP NPN GP TO-92 CASE

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