Circuits (Jiangsu University)

01 Circuits and circuit models02

Reference directions of current and voltage03

Electric power and energy04

Resistive elements05

Voltage sources and current sources06

Controlled power supply07

Kirchhoff's law08

Equivalent transformation of simple resistive circuits09

Resistor star connection and triangle Equivalent transformation of connection

10 Equivalent transformation of power supply

11 Diagram of the circuit

12 Number of independent equations of KCL and KVL

13 Branch current method

14 Loop current method (1)

15 Loop current method (2)

16 Node voltage method (1)

17 Node voltage method (2)

18 Superposition theorem

19 Homogeneity theorem and substitution theorem

20 Thevenin’s theorem

21 Norton’s theorem and maximum power transfer theorem

22 Micro course of maximum power transfer theorem (Li Changjie)

23 Tellegen’s theorem

24 Capacitive components and inductive components (1)

25 Capacitive components and inductive components (2)

26 Capacitive components and inductive components (3) Determination of circuit switching law and initial value (1)

27 Determination of circuit switching law and initial value (2) Dynamic response of first-order circuit (1)

28 Dynamic response of first-order circuit (2)

29 Dynamic response of first-order circuit (3) Three-element method of first-order circuit (1)

30 Three-element method of first-order circuit (2)

31 Three-element method of first-order circuit Element method (3) Step response of first-order dynamic circuit

32 Dynamic response of second-order circuit (1)

33 Dynamic response of second-order circuit (2)

34 Sine quantity and its phasor representation (1)

35 Sine quantity and its phase Quantity representation (2) Phasor form of circuit law

36 Complex impedance and complex admittance (1)

37 Complex impedance and complex admittance (2)

38 Analysis of sinusoidal steady-state circuit (1)

39 Analysis of sinusoidal steady-state circuit (2 )

40 Power of sinusoidal steady-state circuit (1)

41 Power of sinusoidal steady-state circuit (2)

42 Power of sinusoidal steady-state circuit (3) Improvement of power factor

43 Power of sinusoidal steady-state circuit (4) Maximum power transmission

44 Series connection Resonant circuit (1)

45 Series resonant circuit (2)

46 Series resonant circuit (3) Parallel resonant circuit (1)

47 Parallel resonant circuit (2) Series and parallel resonant circuit

48 Basic concepts of mutual inductance circuits (1)

49 Basics of mutual inductance circuits Concept (2)

50 Calculation of mutual inductance circuit (1)

51 Calculation of mutual inductance circuit (2)

52 Air-core transformer

53 Ideal transformer

54 Basic concept of three-phase circuit (1)

55 Basic concept of three-phase circuit (2) Symmetrical three-phase circuit Calculation of (1)

56 Calculation of symmetrical three-phase circuit (2)

57 Calculation of symmetrical three-phase circuit (3) Asymmetrical three-phase circuit

58 Power and measurement of three-phase circuit (1)

59 Power and measurement of three-phase circuit ( 2)

60 Harmonic analysis of non-sinusoidal periodic signals, effective value and average value

61 Power of non-sinusoidal periodic current circuit, calculation of non-sinusoidal periodic current circuit

62 Introduction to filters

63 Laplace transform, inverse transform and dynamic circuit complex Frequency domain model

64 Complex frequency domain analysis of dynamic circuits

65 Network function (1)

66 Network function (2)

67 Cut set

68 Correlation matrix, loop matrix, cut set matrix

69 Matrix form of loop current

equation 70 Matrix of node voltage equation Form

71 Matrix form of cut set voltage equation

72 State equation (1)

73 State equation (2)

74 Two-port network and its parameter equations (1)

75 Two-port network and its parameter equations (2)

76 Two-port network and its parameters Equation (3) Equivalent circuit of two-port network (1)

77 Equivalent circuit of two-port network (2) Connection of two-port network

• Chapter 1：Circuits and Circuit Models (41 minutes and 42 seconds)

• Chapter 2：Reference directions for current and voltage (35 minutes and 48 seconds)

• Chapter 3：Electrical power and energy (37 minutes and 41 seconds)

• Chapter 4：Resistive element (32 minutes and 0 seconds)

• Chapter 5：Voltage and current sources (42 minutes and 52 seconds)

• Chapter 6：controlled power supply (30 minutes and 49 seconds)

• Chapter 7：Kirchhoff's Law (40 minutes and 38 seconds)

• Chapter 8：Equivalent transformation of simple resistor circuit (50 minutes and 18 seconds)

• Chapter 9：Equivalent transformation of resistance star connection and delta connection (42 minutes and 32 seconds)

• Chapter 10：Equivalent transformation of power supply (52 minutes and 33 seconds)

• Chapter 11：circuit diagram (36 minutes and 53 seconds)

• Chapter 12：Number of independent equations of KCL and KVL (32 minutes and 24 seconds)

• Chapter 13：branch current method (57 minutes and 54 seconds)

• Chapter 14：Loop current method (1) (52 minutes and 8 seconds)

• Chapter 15：Loop current method (2) (50 minutes and 51 seconds)

• Chapter 16：Node voltage method (1) (44 minutes and 9 seconds)

• Chapter 17：Node voltage method (2) (58 minutes and 0 seconds)

• Chapter 18：superposition theorem (48 minutes and 46 seconds)

• Chapter 19：Homogeneity theorem and substitution theorem (44 minutes and 41 seconds)

• Chapter 20：Thevenin's theorem (50 minutes and 35 seconds)

• Chapter 21：Norton's Theorem and Maximum Power Transfer Theorem (51 minutes and 8 seconds)

• Chapter 22：Maximum power transfer theorem (14 minutes and 47 seconds)

• Chapter 23：Tellegen's theorem (49 minutes and 58 seconds)

• Chapter 24：Capacitive components and inductive components (1) (44 minutes and 42 seconds)

• Chapter 25：Capacitive components and inductive components (2) (39 minutes and 49 seconds)

• Chapter 26：Capacitive components and inductive components (3) Circuit switching law and determination of initial values ​​(1) (43 minutes and 56 seconds)

• Chapter 27：Determination of circuit switching law and initial value (2) Dynamic response of first-order circuit (1) (46 minutes and 5 seconds)

• Chapter 28：Dynamic response of first-order circuits (2) (44 minutes and 58 seconds)

• Chapter 29：Dynamic response of first-order circuit (3) Three-factor method of first-order circuit (1) (47 minutes and 5 seconds)

• Chapter 30：Three-element method for first-order circuits (2) (45 minutes and 50 seconds)

• Chapter 31：Three-element method of first-order circuit (3) Step response of first-order dynamic circuit (45 minutes and 17 seconds)

• Chapter 32：Dynamic response of second-order circuits (1) (46 minutes and 43 seconds)

• Chapter 33：Dynamic response of second-order circuits (2) (51 minutes and 27 seconds)

• Chapter 34：Sinusoidal quantity and its phasor representation (1) (46 minutes and 4 seconds)

• Chapter 35：Sinusoidal quantity and its phasor representation (2) Phasor form of circuit law (39 minutes and 17 seconds)

• Chapter 36：Complex impedance and complex admittance (1) (38 minutes and 29 seconds)

• Chapter 37：Complex impedance and complex admittance (2) (46 minutes and 24 seconds)

• Chapter 38：Analysis of sinusoidal steady-state circuit (1) (37 minutes and 32 seconds)

• Chapter 39：Analysis of sinusoidal steady-state circuit (2) (47 minutes and 27 seconds)

• Chapter 40：Power of sinusoidal steady-state circuit (1) (44 minutes and 54 seconds)

• Chapter 41：Power of sinusoidal steady-state circuit (2) (48 minutes and 46 seconds)

• Chapter 42：Power of sinusoidal steady-state circuit (3) Improvement of power factor (49 minutes and 9 seconds)

• Chapter 43：Power of sinusoidal steady-state circuit (4) Maximum power transfer (46 minutes and 2 seconds)

• Chapter 44：Series resonant circuit (1) (48 minutes and 21 seconds)

• Chapter 45：Series resonant circuit (2) (44 minutes and 16 seconds)

• Chapter 46：Series resonant circuit (3) Parallel resonant circuit (1) (47 minutes and 28 seconds)

• Chapter 47：Parallel resonant circuit (2) Series and parallel resonant circuit (51 minutes and 9 seconds)

• Chapter 48：Basic concepts of mutual inductance circuit (1) (40 minutes and 32 seconds)

• Chapter 49：Basic concepts of mutual inductance circuit (2) (44 minutes and 5 seconds)

• Chapter 50：Calculation of mutual inductance circuit (1) (41 minutes and 22 seconds)

• Chapter 51：Calculation of mutual inductance circuit (2) (50 minutes and 4 seconds)

• Chapter 52：Air core transformer (43 minutes and 8 seconds)

• Chapter 53：ideal transformer (43 minutes and 40 seconds)

• Chapter 54：Basic concepts of three-phase circuits (1) (48 minutes and 24 seconds)

• Chapter 55：Basic concepts of three-phase circuits (2) Calculation of symmetrical three-phase circuits (1) (40 minutes and 56 seconds)

• Chapter 56：Calculation of symmetrical three-phase circuit (2) (43 minutes and 38 seconds)

• Chapter 57：Calculation of symmetrical three-phase circuit (3) Asymmetrical three-phase circuit (46 minutes and 23 seconds)

• Chapter 58：Power and measurement of three-phase circuits (1) (43 minutes and 51 seconds)

• Chapter 59：Power and measurement of three-phase circuits (2) (43 minutes and 34 seconds)

• Chapter 60：Harmonic analysis of non-sinusoidal periodic signals, rms and average values (45 minutes and 32 seconds)

• Chapter 61：Power of non-sinusoidal periodic current circuit, calculation of non-sinusoidal periodic current circuit (46 minutes and 26 seconds)

• Chapter 62：Introduction to filters (48 minutes and 23 seconds)

• Chapter 63：Laplace transform, inverse transform and complex frequency domain model of dynamic circuits (47 minutes and 32 seconds)

• Chapter 64：Complex Frequency Domain Analysis of Dynamic Circuits (31 minutes and 42 seconds)

• Chapter 65：Network functions (1) (39 minutes and 48 seconds)

• Chapter 66：Network functions (2) (42 minutes and 10 seconds)

• Chapter 67：cut set (44 minutes and 10 seconds)

• Chapter 68：Correlation matrix, loop matrix, cut set matrix (49 minutes and 17 seconds)

• Chapter 69：Matrix form of loop current equation (50 minutes and 41 seconds)

• Chapter 70：Matrix form of the node voltage equation (38 minutes and 11 seconds)

• Chapter 71：Matrix form of cut set voltage equation (46 minutes and 34 seconds)

• Chapter 72：State equation (1) (43 minutes and 14 seconds)

• Chapter 73：State equation (2) (53 minutes and 45 seconds)

• Chapter 74：Two-port network and its parameter equations (1) (56 minutes and 32 seconds)

• Chapter 75：Two-port network and its parameter equations (2) (56 minutes and 24 seconds)

• Chapter 76：Two-port network and its parameter equation (3) Equivalent circuit of the two-port network (1) (44 minutes and 10 seconds)

• Chapter 77：Equivalent of two-port network (2) Connection of two-port network (33 minutes and 31 seconds)