Download Resistors, Capacitors, Inductors

UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Components
Batteries, Resistors, Capacitors,
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
• Current
– Flow of electrons
• Voltage
– Potential which makes current flow in a
conductor
• Resistance (Impedance)
– Property which impedes the flow of current
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
• Current
– Flow of electrons
• Electron 1.6*10-19 coulombs
– Units: Ampere
– Ampere = 1 coulomb/second
• 6.25 *1018 electrons/second
– Symbols & abbreviations
• Amps, I
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
• Voltage
–
–
–
–
–
Electromotive Force (EMF)
Potential difference between two points
Units: Volts
Makes current flow through conductors
Symbols & abbreviations
• V E
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
• Resistance
– Property which impedes the flow of current
– Units: Ohms
– Ohm = 1 Volt / 1 Ampere
– Symbol: Ω
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
Resistors
12V
6Ω
Circuit with Battery and Resistor
Printed Circuit Sized Resistors
Ohm’s Law: I = V/R
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Resistors
Color
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Value
0
1
2
3
4
5
6
7
8
9
Two digits plus multiplier
AB*10C
Yellow – Violet – Red
47*102
4700 Ω
Brown – Black – Orange
10*103
10,000 Ω
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
Resistors
Tolerance
Gold +/-5%
Silver +/-10%
None +/-20%
Computer and Electronics Engineering Department
COLLEGE OF ENGINEERING
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Resistors
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
10
12
15
18
22
27
33
39
47
56
68
82
Available in +/-10%
Range of values is from 0.10 Ω
To 22.0 x106 Ω
Available in +/-5%
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
Capacitors
C= Charge/Voltage = Q/V
Units: Farad
Smooths changes
in voltage
Computer and Electronics Engineering Department
UNIVERSITY OF NEBRASKA – LINCOLN
COLLEGE OF ENGINEERING
Circuit Parameters
Typical Resistor-Capacitor Circuit
Computer and Electronics Engineering Department