Transistor (BJT) as Amplifier / Switch – 3D Interactive Model | NCERT Class 12 · Semiconductor Electronics

View

Explode

Cross-section

Base current

n-type (emitter & collector)
p-type (thin base)
Electrons
Emitter current I_E
Base current I_B
Collector current I_C

Slide the base current — watch tiny I_B control big I_C

Source: NCERT Class 12 Physics, Ch. 14 — Semiconductor Electronics · Interactive 3D learning model

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