Mapping EDC → LIC

 

Mapping EDC → LIC

Here’s the topic-by-topic link between what you studied in EDC and what you’ll use in LIC:

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🧩 1. BJT (Bipolar Junction Transistor)

EDC Topics:

• BJT construction, biasing, CE configuration

• Hybrid-π model

• CE Amplifier analysis

Required for LIC:

• Understanding Op-Amp internal circuitry (it uses multiple BJTs inside).

• Concept of differential amplifier (LIC Module 1 & 2) → built using matched BJTs.

• Current mirrors and active loads used in op-amp ICs rely on BJT operation.
  So: Knowing transistor operation, biasing, and small-signal analysis is essential.

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⚙️ 2. MOSFET

EDC Topics:

• Enhancement/Depletion MOSFETs

• Biasing & small-signal equivalent

• CS (Common Source) amplifier

Required for LIC:

• Used in CMOS Op-Amps, Differential Amplifiers, and Active Filters.

• Understanding input impedance, gain, and biasing principles helps you when studying op-amp internal stages and linear amplifier circuits.

• LIC Module 2 & 3 use MOSFETs indirectly in op-amp-based design understanding.

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🔋 3. Amplifiers

EDC Topics:

• Class A, B, AB, C power amplifiers

• Transformer-coupled amplifiers

Required for LIC:

• Knowing gain, bandwidth, and distortion concepts helps you understand closed-loop and open-loop gain of op-amps.

• Practical op-amp circuits (like inverting and non-inverting amplifiers) are refined versions of transistor amplifiers with feedback.

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🔁 4. Oscillators

EDC Topics:

• RC phase shift, Wien bridge, Hartley, Colpitts oscillators

• Positive and negative feedback

Required for LIC:

• Feedback theory directly connects to op-amp design and stability.

• In LIC Module 3 (Non-linear applications), you’ll again see Schmitt triggers and waveform generators, which depend on similar feedback principles.

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⚖️ 5. Differential Amplifier

EDC Topics:

• DC & AC analysis of differential amplifiers

• MOSFET/BJT differential amplifier

Required for LIC:

• Absolutely crucial — the heart of an operational amplifier is a differential amplifier.

• LIC Module 1 (“Introduction to Differential and Operational Amplifier”) builds entirely on this.

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🧠 Summary: Core EDC Concepts You’ll Use in LIC

EDC Concept	Role in LIC (IC Sem 4)
BJT biasing & hybrid-π model	Op-amp internal transistor design
MOSFET small-signal model	Used in CMOS op-amps
Differential amplifier	Basis of op-amp working
Feedback (positive/negative)	Key to op-amp stability and gain control
Amplifier gain, bandwidth, distortion	Analyzing op-amp circuits
Oscillator basics	Understanding Schmitt triggers & waveform generators

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✅ Recommendation for Revision Before LIC

Before starting LIC, revise the following EDC topics thoroughly:

1. BJT small-signal analysis & hybrid-π model

2. Differential amplifier (BJT/MOSFET)

3. Concept of feedback (block diagram level)

4. Basic amplifier configurations (CE, CS)

5. Frequency response (gain-bandwidth tradeoff)