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

🧩 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.

⚙️ 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.

🔋 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.

🔁 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.

⚖️ 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.

🧠 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

✅ Recommendation for Revision Before LIC

Before starting LIC, revise the following EDC topics thoroughly:

BJT small-signal analysis & hybrid-π model
Differential amplifier (BJT/MOSFET)
Concept of feedback (block diagram level)
Basic amplifier configurations (CE, CS)
Frequency response (gain-bandwidth tradeoff)

In a locality 65% of the families read Times of India, 75% read Indian Express, 15% read neither. If 330 families read both the newspapers, how many families lived in that locality? Draw a Venn diagram to solve the problem.

In an examination, 80% of students passed in Maths and 70% in Science while 12% failed in both the subjects. If 310 students passed in both the subjects, find the total number of students who appeared in the examination.

In a locality 65% of the families read Times of India, 75% read Indian Express, 15% read neither. If 330 families read both the newspapers, how many families lived in that locality? Draw a Venn diagram to solve the problem.