# Networks and systems

- Institution: IIT Madras
- Department: Electronics & Communication Engineering
- Taught by: Prof. Andrew Thangaraj, Prof. C. S. Ramalingam
- Level: Undergraduate
- Language: English
- Subjects: Engineering, Society and politics
- Source: [NPTEL](https://nptel.ac.in/courses/117106116)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/117106116)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

## Lectures

1. [Functions in circuits - constant and sinusoidal functions](https://invisiblenetwork.ai/learn/nptel/117106116/14548744e22e) (Video)
2. [Functions in circuits - Exponential function](https://invisiblenetwork.ai/learn/nptel/117106116/5db8ee4d8dda) (Video)
3. [Complex numbers and other topics](https://invisiblenetwork.ai/learn/nptel/117106116/2d0377a1d8da) (Video)
4. [Systems, Signals, Networks](https://invisiblenetwork.ai/learn/nptel/117106116/e92ef6722889) (Video)
5. [Representation and Classification of Systems](https://invisiblenetwork.ai/learn/nptel/117106116/62770631174b) (Video)
6. [Linear systems](https://invisiblenetwork.ai/learn/nptel/117106116/d4329f9d5a13) (Video)
7. [Time-invariance and causality](https://invisiblenetwork.ai/learn/nptel/117106116/93c6fceefab9) (Video)
8. [Signals, Elementary continuous signals](https://invisiblenetwork.ai/learn/nptel/117106116/b0ec639b8f09) (Video)
9. [Complex frequencies of signals](https://invisiblenetwork.ai/learn/nptel/117106116/2ca06073b45a) (Video)
10. [Discontinuous signals - step, ramp](https://invisiblenetwork.ai/learn/nptel/117106116/75759aa7bd2a) (Video)
11. [Unit impulse or delta function](https://invisiblenetwork.ai/learn/nptel/117106116/ec2ec42046d0) (Video)
12. [Basic discrete-time signals](https://invisiblenetwork.ai/learn/nptel/117106116/d52c563b8e98) (Video)
13. [Week 1 Solutions](https://invisiblenetwork.ai/learn/nptel/117106116/6a1e935cc586) (Video)
14. [Examples of Signals](https://invisiblenetwork.ai/learn/nptel/117106116/abb5aa2d1466) (Video)
15. [Introduction to Systems, Complementary Functions, Initial Conditions](https://invisiblenetwork.ai/learn/nptel/117106116/1d1a1f365989) (Video)
16. [Special initial conditions](https://invisiblenetwork.ai/learn/nptel/117106116/25eedf205a66) (Video)
17. [Characterization of a linear system](https://invisiblenetwork.ai/learn/nptel/117106116/8956d3e152b0) (Video)
18. [Impulse Response](https://invisiblenetwork.ai/learn/nptel/117106116/bca0d12dfa94) (Video)
19. [Evaluating the Convolution Integral](https://invisiblenetwork.ai/learn/nptel/117106116/946aba4b1e8e) (Video)
20. [Worked-out Problems](https://invisiblenetwork.ai/learn/nptel/117106116/9619b8e77e1a) (Video)
21. [Hints for Assignment 2](https://invisiblenetwork.ai/learn/nptel/117106116/5ef68590fd73) (Video)
22. [Introduction and Motivation](https://invisiblenetwork.ai/learn/nptel/117106116/9f7a039b525f) (Video)
23. [Evaluating Fourier series coefficients](https://invisiblenetwork.ai/learn/nptel/117106116/485270d5fa1f) (Video)
24. [Symmetry conditions](https://invisiblenetwork.ai/learn/nptel/117106116/7d40efd5fac4) (Video)
25. [Symmetry Condition Examples](https://invisiblenetwork.ai/learn/nptel/117106116/e0f13a31d56b) (Video)
26. [Application to Network Analysis](https://invisiblenetwork.ai/learn/nptel/117106116/9fe9770e2ba4) (Video)
27. [Hints for Assignment 3](https://invisiblenetwork.ai/learn/nptel/117106116/574bb772cce5) (Video)
28. [Exponential Fourier Series](https://invisiblenetwork.ai/learn/nptel/117106116/5ef54f4ccc0d) (Video)
29. [Frequency Spectrum](https://invisiblenetwork.ai/learn/nptel/117106116/5b550e2405ef) (Video)
30. [Examples](https://invisiblenetwork.ai/learn/nptel/117106116/b81877a1412c) (Video)
31. [Signal Power and Related Ideas](https://invisiblenetwork.ai/learn/nptel/117106116/61459dfc9393) (Video)
32. [Convergence of Fourier Series](https://invisiblenetwork.ai/learn/nptel/117106116/1677679eaa55) (Video)
33. [Additional Properties of Fourier Series](https://invisiblenetwork.ai/learn/nptel/117106116/19af039c666e) (Video)
34. [Exercises on Fourier Series](https://invisiblenetwork.ai/learn/nptel/117106116/a2ef2be25f88) (Video)
35. [Lab Demo](https://invisiblenetwork.ai/learn/nptel/117106116/161aa6334439) (Video)
36. [From Fourier Series to Fourier Transform](https://invisiblenetwork.ai/learn/nptel/117106116/799b5580d982) (Video)
37. [Continuous Time Fourier Transform](https://invisiblenetwork.ai/learn/nptel/117106116/7748410523e0) (Video)
38. [Fourier Transform Examples](https://invisiblenetwork.ai/learn/nptel/117106116/56f872d4f492) (Video)
39. [Examples and Some Properties of Fourier Transform](https://invisiblenetwork.ai/learn/nptel/117106116/c410b04bc70c) (Video)
40. [Properties of Fourier Transform (contd.)](https://invisiblenetwork.ai/learn/nptel/117106116/ed00fa00d270) (Video)
41. [More Fourier Transform Properties](https://invisiblenetwork.ai/learn/nptel/117106116/4291390546c1) (Video)
42. [Energy Considerations](https://invisiblenetwork.ai/learn/nptel/117106116/6c9cd0228c30) (Video)
43. [Energy Considerations II](https://invisiblenetwork.ai/learn/nptel/117106116/e3abeb7f3f37) (Video)
44. [Helpful Relationships for Inverse Fourier Transform](https://invisiblenetwork.ai/learn/nptel/117106116/b108dd509ad1) (Video)
45. [Fourier transform of signals that are not absolutely integrable](https://invisiblenetwork.ai/learn/nptel/117106116/cd153602cd50) (Video)
46. [Fourier Transform of Periodic Signals, Unit Step and Signum Function](https://invisiblenetwork.ai/learn/nptel/117106116/2326d8918e5f) (Video)
47. [Truncated Sine wave and Convolution properties](https://invisiblenetwork.ai/learn/nptel/117106116/fca7af9226e9) (Video)
48. [Integration in Time domain](https://invisiblenetwork.ai/learn/nptel/117106116/4eac72535d6a) (Video)
49. [Application of continuous-time Fourier transform to system analysis](https://invisiblenetwork.ai/learn/nptel/117106116/790ecd3895bb) (Video)
50. [Comments about transient analysis](https://invisiblenetwork.ai/learn/nptel/117106116/3747e0337e77) (Video)
51. [Sampling Theorem and Exercises on Fourier Transforms](https://invisiblenetwork.ai/learn/nptel/117106116/ec06d2c5df30) (Video)
52. [Introduction to Laplace Transform](https://invisiblenetwork.ai/learn/nptel/117106116/633b065ba39a) (Video)
53. [Laplace transforms of important functions](https://invisiblenetwork.ai/learn/nptel/117106116/ca91f14b158a) (Video)
54. [Recap, Poles / Zeros and Laplace Transform Notation](https://invisiblenetwork.ai/learn/nptel/117106116/23aecf6dd5ad) (Video)
55. [Properties: Linearity, differentiation in the time domain](https://invisiblenetwork.ai/learn/nptel/117106116/4fa883607fde) (Video)
56. [Application and properties of Laplace transform](https://invisiblenetwork.ai/learn/nptel/117106116/230af8d00fb7) (Video)
57. [More properties of Laplace transform: Shift in frequency domain](https://invisiblenetwork.ai/learn/nptel/117106116/f1494d5e7d11) (Video)
58. [More properties of Laplace transform](https://invisiblenetwork.ai/learn/nptel/117106116/4fd98ff6ef28) (Video)
59. [Properties: Division by `t, Initial value theorem, Final value theorem](https://invisiblenetwork.ai/learn/nptel/117106116/230d44652cca) (Video)
60. [Properties: Convolution in time domain](https://invisiblenetwork.ai/learn/nptel/117106116/4f8c206e5690) (Video)
61. [Complex convolution and periodic functions](https://invisiblenetwork.ai/learn/nptel/117106116/e8b97ca23486) (Video)
62. [Examples of Laplace transform](https://invisiblenetwork.ai/learn/nptel/117106116/a91384a17a0a) (Video)
63. [Laplace transform examples](https://invisiblenetwork.ai/learn/nptel/117106116/cf3a8722dfc6) (Video)
64. [Inverse Laplace transform](https://invisiblenetwork.ai/learn/nptel/117106116/4de825aac70e) (Video)
65. [Partial fractions: general case](https://invisiblenetwork.ai/learn/nptel/117106116/b02412881e78) (Video)
66. [Inverse Laplace Transform and Contour Integration](https://invisiblenetwork.ai/learn/nptel/117106116/f84cff573db1) (Video)
67. [Relating Fourier and Laplace Transform](https://invisiblenetwork.ai/learn/nptel/117106116/2672980d3749) (Video)
68. [Exercises](https://invisiblenetwork.ai/learn/nptel/117106116/e13e7938de58) (Video)
69. [Applications of Laplace transform to network transients](https://invisiblenetwork.ai/learn/nptel/117106116/e62508c96861) (Video)
70. [Laplace transform for resistor and system analysis](https://invisiblenetwork.ai/learn/nptel/117106116/8153a58a4b7f) (Video)
71. [Laplace transform method for mutual inductance](https://invisiblenetwork.ai/learn/nptel/117106116/aafc9a542aab) (Video)
72. [Mutual Inductance Continued](https://invisiblenetwork.ai/learn/nptel/117106116/dcb91bb5a210) (Video)
73. [Examples and Advantages of L-transform](https://invisiblenetwork.ai/learn/nptel/117106116/5012a42bb806) (Video)
74. [General LTI systems and more about H(s)](https://invisiblenetwork.ai/learn/nptel/117106116/730708a8e3b0) (Video)
75. [Many facets of the system function (contd)](https://invisiblenetwork.ai/learn/nptel/117106116/64db530482f1) (Video)
76. [Frequency response and stability](https://invisiblenetwork.ai/learn/nptel/117106116/309a78c9c540) (Video)
77. [Full circuit example](https://invisiblenetwork.ai/learn/nptel/117106116/48bb877cad8b) (Video)
78. [Exercises.](https://invisiblenetwork.ai/learn/nptel/117106116/aade2cf2ae9a) (Video)