CONCEPTUAL TOOLS Introduction to Electronics Neil E Cotter
- Slides: 36
CONCEPTUAL TOOLS Introduction to Electronics Neil E. Cotter Associate Professor (Lecturer) ECE Department University of Utah
CONCEPTUAL TOOLS Outline Quantities: Voltage Current Power Devices: Resistor Capacitor Inductor LED Transistor Op-Amp Laws: Ohm’s Law Kirchhoff’s Laws
CONCEPTUAL TOOLS Voltage
CONCEPTUAL TOOLS Voltage = pressure that pushes electrons through circuit Water analogy: voltage = altitude of water
CONCEPTUAL TOOLS Current
CONCEPTUAL TOOLS Current = flow of electrons through circuit Water analogy: current = flow of water
CONCEPTUAL TOOLS http: //www. usbr. gov/power/data/sites/gle ncany/glencany. html Power http: //en. wikipedia. org/wiki/H ydroelectric http: //www. wapa. gov/newsroom/cct/20 05/july 15/27 no 141 a. htm
CONCEPTUAL TOOLS Power http: //www. usbr. gov/power/data/sites/gle ncany/glencany. html http: //en. wikipedia. org/wiki/H ydroelectric http: //www. wapa. gov/newsroom/cct/20 05/july 15/27 no 141 a. htm Power = voltage x current Water analogy: power = altitude drop x flow
CONCEPTUAL TOOLS Resistor
CONCEPTUAL TOOLS Resistor reduces current flow Water analogy: flow less for winding river
CONCEPTUAL TOOLS Capacitor
CONCEPTUAL TOOLS Capacitor stores charge Water analogy: tank stores water
CONCEPTUAL TOOLS http: //www. furuier. com/english/product/index 0. htm LED http: //www. xmission. com/~m 3 lody/jun k/xmas 2002/lit_waterfall 1. jpg
CONCEPTUAL TOOLS LED http: //www. furuier. com/english/product/index 0. htm http: //www. xmission. com/~m 3 lody/jun k/xmas 2002/lit_waterfall 1. jpg LED lights up and acts like voltage drop Water analogy: lit waterfall
CONCEPTUAL TOOLS Ohm’s Law
CONCEPTUAL TOOLS Ohm’s Law Current in resistor = voltage / resistance Water analogy: flow = altitude drop / length of river
CONCEPTUAL TOOLS Kirchhoff’s Voltage Law
CONCEPTUAL TOOLS Kirchhoff’s Voltage Law Sum of voltage drops around loop = 0 Water analogy: total altitude change for loop = 0
CONCEPTUAL TOOLS Kirchhoff’s Current Law
CONCEPTUAL TOOLS Kirchhoff’s Current Law Sum of current flowing out of node = 0 Water analogy: what flows in must flow out
LED Circuit
LED Circuit
LED Circuit
LED Circuit
LED-Capacitor Circuit
LED Circuit
LED-Capacitor Circuit
LED-Capacitor Circuit
LED-Capacitor Circuit
Digital Electronics
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Digital Electronics
Digital Electronics Flip-Flop
Digital Electronics Flip-Flop
Digital Electronics Flip-Flop
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