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L02 Circuit Diagrams

# L02 Circuit Diagrams - EE 40 Circuit Diagrams EE 40 Lecture...

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EE 40 Circuit Diagrams EE 40 Lecture 2: Circuit Diagrams 1

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Schematic Diagram EE 40 Lecture 2: Circuit Diagrams 2 Components (branches) Connections (wires, nodes)
Current & Voltage EE 40 Lecture 2: Circuit Diagrams 3 Current: [Ampere] = [Coulombs/second] Voltage (“Electromotive Force”): *Volts+

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Current Current = Charge [Coulomb] per second Charge: electrons, q e = -1.6 x 10 -19 C 6 x 10 18 electrons per Coulomb Free electron density of copper: n Cu = 10 24 cm -3 How fast do electrical signals travel in wires? How fast do electrons move in wires? EE 40 Lecture 2: Circuit Diagrams 4 A = 1mm 2 L = 6 m m 1 Coulomb
Digital Voltmeter (DVM) EE 40 Lecture 2: Circuit Diagrams 5 Multimeter Measure Voltage Current Resistance Precision

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Measuring Voltage EE 40 Lecture 2: Circuit Diagrams 6
Measuring Current (“Am - Meter”) EE 40 Lecture 2: Circuit Diagrams 7

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Kirchhoff’s Current Law (KCL) EE 40 Lecture 2: Circuit Diagrams 8
KCL Example EE 40 Lecture 2: Circuit Diagrams 9 Given: i 1 , i 2 Find i x = i y = 5 min Voltage same everywhere in node, not current!

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Kirchhoff’s Voltage Law (KVL) EE 40 Lecture 2: Circuit Diagrams 10
KVL Example EE 40 Lecture 2: Circuit Diagrams 11 Given: v 1 , v 2 , v 3 Find v x = v y = v z =

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Common Node EE 40 Lecture 2: Circuit Diagrams
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L02 Circuit Diagrams - EE 40 Circuit Diagrams EE 40 Lecture...

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