Common Collector (Emitter Follower) Calculator
Calculate emitter follower voltage gain, input/output impedance
Circuit Parameters
Emitter Follower Characteristics
- • Voltage gain slightly less than 1
- • Very high input impedance
- • Very low output impedance
- • No phase inversion
- • High current gain
- • Ideal for impedance matching/buffering
Gain Characteristics
Voltage Gain (Av)0.946
Gain (dB)-0.48 dB
Current Gain (Ai)101
Power Gain (dB)19.8 dB
Phase Shift0°
Impedance Characteristics
Input Impedance (Zin)9.70 kΩ
Output Impedance (Zout)98.6 Ω
Transconductance (gm)192.31 mS
Base Resistance (rπ)0.52 kΩ
Bandwidth (fH)1.59 MHz