BJT Amplifier Design Online Calculator

⚡ BJT LAB · 5 bias calculators

engineer's notebook

🔹 Base bias (fixed)

V
V
V
mA
base bias circuit
RB
RC
race
Zinb
Zin
rc
C1
C2
Av
📘 base bias notes – RB = (Vcc-Vbe)/Ib, RC=(Vcc-Vc)/Ic, race=25/Ie … tutorial

🔸 Self bias (collector feedback)

V
V
V
mA
self bias
RB
RC
race
Zinb
Zin
rc
C1
C2
Av
📘 self bias – RB = (Vc-Vbe)/Ib … tutorial

🔸 Emitter bias

V
V
V
mA
V
emitter bias
RB
RC
RE
race
Zinb
Zin
rc
C1
C2
C3
Av
📘 emitter bias – RE = Ve/Ie, RB = (Vcc-Ve-Vbe)/Ib …

🔸 Emitter‑collector

V
V
V
mA
V
ecb
RB
RC
RE
race
Zinb
Zin
rc
C1
C2
C3
Av
📘 emitter‑collector – RB = (Vc-Ve-Vbe)/Ib …

🔸 Voltage divider

V
V
V
mA
V
vdb
R1
RC
RE
race
Zinb
Zin
rc
C1
C2
C3
Av
📘 voltage divider – R1 = (Vcc/(Ve+Vbe)-1)*R2 …
🔬 lab-style BJT calculator · resistor & capacitor values appear with kΩ / MΩ / µF etc.

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