Year 2 — Term 2
8 study notes · 97 practice questions · Aligned with NIE syllabus
Counted in the Idasara Academy app, which you open with a free account. The free notes, revision, practice and library pages for each lesson are linked below.
Lessons in This Term
Semiconductors & p–n Junctions
Energy Bands in Solids: In a solid, discrete atomic energy levels broaden into bands: the valence band (filled with electrons) and the conduction band (empty or partially filled).
Diodes & Rectification
Semiconductor Diode: A two-terminal device that allows current to flow primarily in one direction. A PN junction diode is formed by joining P-type (holes as majority carriers) and N-type (electrons as majority carriers) semiconductor materials.
Zener Diodes & Regulation
Zener Diode: A diode designed to operate in the reverse breakdown region at a precise, stable voltage.
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Create Free AccountBipolar Junction Transistors (BJT)
Bipolar Junction Transistor (BJT): A three-terminal semiconductor device that uses both electron and hole charge carriers to amplify or switch electrical signals.
Field Effect Transistors (FET/JFET/MOSFET)
Field Effect Transistor (FET): A voltage-controlled semiconductor device where output current is controlled by an electric field applied via a gate terminal.
Operational Amplifiers (Op‑Amps)
Operational Amplifier (Op‑Amp): A high‑gain DC-coupled differential voltage amplifier with two inputs and one output.
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Create Free AccountLogic Gates & Boolean Algebra
Logic Gate: A digital electronic circuit that performs a Boolean function on one or more binary inputs to produce a single binary output.
Flip‑Flops & Sequential Logic
Sequential Logic Circuit: A circuit whose output depends on both current inputs and the past sequence of inputs (i.e., it has memory).