Bài giảng Electrical and electronic principles: Chương 2 - ThS. Ngô Quốc Cường

Những nội dung chính cần tìm hiểu trong chương này gồm có: Methods of analysis, thevenin’s theorem, norton theorem. Mời các bạn cùng tham khảo để biết thêm các nội dung chi tiết.

TRƯỜNG ĐẠI HỌC SƯ PHẠM KỸ THUẬT TP HỒ CHÍ MINH ELECTRICAL AND ELECTRONIC PRINCIPLES WEEK Cuong Q Ngo Last classes • Branch; node; loop • KCL • KVL CONTENTS (Today) • Methods of analysis • Thevenin’s theorem • Norton theorem Methods of analysis • Mesh analysis • Nodal analysis 1.1 Mesh analysis • A mesh is a loop which does not contain any other loops within it • Paths abefa and bcdeb are meshes, but path abcdefa is not a mesh 1.1 Mesh analysis 1.1 Mesh analysis • Find the branch currents and using mesh analysis 1.1 Mesh analysis 1.1 Mesh analysis • Use mesh analysis to find the current in the circuit below 1.1 Mesh analysis • Solution 10 2.1 Thevenin’s theorem • Finding Vth and Rth 16 2.1 Thevenin’s theorem • If the network has dependent source 17 2.1 Thevenin’s theorem • Find the Thevenin equivalent circuit of the circuit to the left of terminal a-b • Then find the current through RL = 6, 16 Ω 18 • Answer Rth = 4; Vth = 30 19 2.1 Thevenin’s theorem • Problem • Using Thevenin’s theorem, find the equivalent circuit to the left of the terminals a-b in the circuit below Then find I 20 • Answer 21 2.1 Thevenin’s theorem • Problem 2* • Find the Thevenin equivalent of the circuit at the terminals: ab 22 • Answer 23 Norton’s theorem 24 Norton’s theorem • Finding Norton current 25 Norton’s theorem • Problem 26 Norton’s theorem • Answer 27 Norton’s theorem • Exercise: Solve the problem by using Thevenin’s theorem 28 Norton’s theorem • Problem 29 Norton’s theorem • Answer 30 ... terminals a-b in the circuit below Then find I 20 • Answer 21 2. 1 Thevenin’s theorem • Problem 2* • Find the Thevenin equivalent of the circuit at the terminals: ab 22 • Answer 23 Norton’s theorem 24 ... variables • 13 1 .2 Nodal analysis • Calculate the node voltages (1; 2) in the circuit below 14 1 .2 Nodal analysis • At node • At node 15 2. 1 Thevenin’s theorem • Finding Vth and Rth 16 2. 1 Thevenin’s... • In the above circuit, we set i2 = - A 11 1.1 Mesh analysis • Mesh Analysis with Current Sources – Case 2: When a current source exists between two meshes 12 1 .2 Nodal analysis • Nodal analysis