EECS 140 Lab #1
EECS 140 Lab #1
EECS 140 Lab #1
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<strong>EECS</strong> <strong>140</strong><br />
<strong>Lab</strong> <strong>#1</strong><br />
Electrical terminology and components<br />
Soldering video
Current<br />
Rate of flow of electric charge (Q)<br />
Represented by letter i and measured in amperes (amps)<br />
1 A = 1 coulomb/second<br />
I = dQ<br />
dt<br />
Amount of water flowing through a hose in certain time<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Voltage or<br />
Potential difference<br />
Work done by unit charge to move between two points<br />
Units are volts (V) or joules per coulomb (J/C)<br />
Measured using Voltmeter or Multimeter<br />
Water needs pressure to force it through a hose<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Resistor<br />
Two terminal electronic component<br />
Restricts the passage of current<br />
Unit of resistance (R) is ohm ( )<br />
Constriction in a water pipe<br />
Ω<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Capacitor<br />
Stores electric charge<br />
Two metal plates separated by dielectric<br />
capacitance<br />
C = εA d<br />
Unit of capacitance is Farad (F)<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Diode<br />
Allows current to flow in only one direction<br />
Biasing a diode<br />
forward<br />
reverse<br />
LED’s, Zener, etc.<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Potentiometer<br />
Three terminal resistor<br />
Knob used to adjust resistance<br />
Used in light dimmers<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Transistor<br />
Three terminal device<br />
Functions as amplifier or switch<br />
increases voltage or current<br />
Essentially two diodes<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
Printed Circuit Board<br />
PCB<br />
Interconnects components<br />
without discrete wires<br />
Simplest PCB can be made by<br />
glue a layer of copper on plastic<br />
remove excess foil by etching<br />
solder components<br />
<strong>EECS</strong> <strong>140</strong> <strong>Lab</strong> 1<br />
© Mahmood A. Hameed
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