Basic Elec. Engr Basic Elec. Engr. Lab . Lab ECS 204 ECS 204 - PowerPoint PPT Presentation

Basic Elec. Engr Basic Elec. Engr. Lab . Lab ECS 204 ECS 204 Asst. Prof. Dr. Prapun Suksompong prapun@siit.tu.ac.th Superposition Theorem (Part A) • Lab 3 Maximum Power Transfer (Part B) • 1

Part A 1 3 1 2 A.(b) A.(a) 3 2 ps1 1 3 1 2 3 2 ps1 ps2 A.(c) 2

A.(b) Voltage divider / / R R    b 2 3 V V   1  A / / ps R R R 1 2 3 A     b V V V 1 1 ps A    b V V 2 A    b V V 3 A V    b 1 I 1 R 1 V    b 2 I 2 R 2 V    b 3 I 3 R 3 3

Voltage divider A.(c) / /    R R      c 1 3 V V  2  A / / ps R R R 2 1 3     c V V 1 A A        c V V V 2 2 A ps    c V V 3 A V    c 1 I 1 R 1 V    c 2 I 2 R 2 V    b 3 I 3 R 3 These two nodes are not the same. Resistor R2 and R3 are not in parallel. 5

A.a 1 3         a b c V V V 1 1 1 1 2         a b c V V V 2 2 2         a b c V V V 2 3 3 3 3         a b c I I I 1 1 1         a b c I I I 2 2 2         a b c I I I 3 3 3 Remark: Some of these values will be negative!! 6

Multiple voltage sources 1 3 Vps2 Vps1 1 2 3 2 This connection can use Note that it is the “-” (black) terminal of the small connector. Vps1 that is connected to the “+” (red) terminal of Vps2. 8

Multiple voltage sources 1 3 Vps2 Vps1 1 2 3 2 This connection can use Note that it is the “-” (black) terminal of the small connector. Vps1 that is connected to the “+” (red) terminal of Vps2. 9

2 V  L P L Part B R L + V L _ You may have to combine the 2 V  TH potentiometer (in series) with some P max 4 R regular resistor to produce the TH desired resistance value. 10