ECE201_4_Qi - 1 ECE 201, Lecture 4 Computation of power,...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 ECE 201, Lecture 4 Computation of power, passive sign convention; Formulas are simple: P=V*I, but Math may be complicated; Ohm’s Law; Resistors in serial and parallel; Capacitors. Summary of previous lecture 2 Example: P1.48 in textbook Find R so that V out /V in =150 +- I 1 V in 10I 1 V R V out 10 Ω 10 Ω +- +- 5V R 1 1 1 10 10 5 50 50 150 10 30 in R out R in in V I V I R V V I R V R V R = Ω = = = = = Ω = Ω 1 1 1 10 10 1 1 5( ) 10 50 500 500 150 10 3 in in R out R R in in V I V V I R R V V V I R V R V R = Ω = = Ω = Ω = = Ω = = Ω = Ω R +- I 1 V in 10I 1 V R V out 10 Ω 10 Ω +- +- 5V R + R- 3 Four dependent sources • Voltage controlled voltage source • Current controlled voltage source • Voltage controlled current source • Current controlled current source • V x , I y , V z and I w are voltages and currents specified elsewhere in the circuit. 1.3 I w 2.6 V z + _ 3.2 I y + _ 2.5 V x 4 Short circuit and Open circuit Regular resistors 1—1MΩ One piece of metal 10-8-10-6 Ω One piece of doped semiconductor ~ Ω-kΩ One piece of wood (insulator) >10 9 Ω (1) Short circuit (zero resistance): R=0, V=IR=0 V for all current (2) Open circuit (infinite resistance): R→ ∞, I=V/R=0 A for all voltage In circuit diagrams, all thin lines have zero resistance 5...
View Full Document

This note was uploaded on 02/03/2012 for the course ECE 201 taught by Professor All during the Fall '08 term at Purdue University.

Page1 / 20

ECE201_4_Qi - 1 ECE 201, Lecture 4 Computation of power,...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online