modified 9 years ago

Design a capacitively coupled emitter follower with split supply for audio range

00:23:19

Art of Electronics 3rd ed. Exercise 2.8

Supply: +15V,-15V
20Hz<f<20Khz
Iquiescent=5mA

Step1: choose emitter resistor
Remitter = U/Iq=30V/5mA=6K

Step2: choose base resistor (path to ground)
Rb=β*Re/10 =60K

Step3: choose C (high pass filter)
f3db  << 20Hz 
f3db=10Hz
Zin=Rb||β*Re=60K||600K=54.5K
C=292nF

published 9 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.