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:
🧩 1. BJT (Bipolar Junction Transistor)
EDC Topics:
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BJT construction, biasing, CE configuration
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Hybrid-π model
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CE Amplifier analysis
Required for LIC:
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Understanding Op-Amp internal circuitry (it uses multiple BJTs inside).
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Concept of differential amplifier (LIC Module 1 & 2) → built using matched BJTs.
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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:
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Enhancement/Depletion MOSFETs
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Biasing & small-signal equivalent
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CS (Common Source) amplifier
Required for LIC:
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Used in CMOS Op-Amps, Differential Amplifiers, and Active Filters.
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Understanding input impedance, gain, and biasing principles helps you when studying op-amp internal stages and linear amplifier circuits.
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LIC Module 2 & 3 use MOSFETs indirectly in op-amp-based design understanding.
🔋 3. Amplifiers
EDC Topics:
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Class A, B, AB, C power amplifiers
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Transformer-coupled amplifiers
Required for LIC:
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Knowing gain, bandwidth, and distortion concepts helps you understand closed-loop and open-loop gain of op-amps.
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Practical op-amp circuits (like inverting and non-inverting amplifiers) are refined versions of transistor amplifiers with feedback.
🔁 4. Oscillators
EDC Topics:
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RC phase shift, Wien bridge, Hartley, Colpitts oscillators
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Positive and negative feedback
Required for LIC:
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Feedback theory directly connects to op-amp design and stability.
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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:
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DC & AC analysis of differential amplifiers
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MOSFET/BJT differential amplifier
Required for LIC:
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Absolutely crucial — the heart of an operational amplifier is a differential amplifier.
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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:
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BJT small-signal analysis & hybrid-π model
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Differential amplifier (BJT/MOSFET)
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Concept of feedback (block diagram level)
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Basic amplifier configurations (CE, CS)
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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.
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