Class A Power Amplifier Online Calculator

⚡ Class A PA · 5 bias methods

lab calculator

🔹 Base bias

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

🔸 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 …

🔸 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 (power)

V
V
vdb
Ap
η
PDQ
Pin
Pout
Av
📘 power equations: Pin = Vin²/(8·Zin), Pout = Vout²/(8·RL), efficiency η = Pout/Pdc … tutorial
⚡ lab‑style class A power amplifier calculator · results in kΩ / MΩ / µF / mW etc.

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