Download Electrical Engineering - Mr. Kerins

ELECTRICAL
ENGINEERING
Mr. Kerins
ELECTRICAL ENGINEERING
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Definition- is the
design and
construction of
electrical and
electronic components
and devices
21% of all engineers
are Electrical
ELECTRICAL ENGINEERING DEGREE REQ’S
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Coursework:
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Electricity
Electronics
Chemistry
Biology
Physics
High level Math
Statistics
IEEE
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Institute of Electrical
and electronics
Engineers
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375,000 members

160 Countries

Goal and Purpose;
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Dedicated to advancing
technological innovation
and excellence through
their publications,
conferences, standards, and
activities
ELECTRONIC BASICS
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Flow of Electrons
Negative to Positive
 Moving At Speed of
Light (24 x around
earth in 1 second)
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Schematics are a must
ELECTRONIC BASICS
3
Requirements
for a complete
circuit
Source
 Load
 Path
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TYPES OF ELECTRICAL CIRCUITS
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Engineers must weigh
unique benefits and
drawbacks for each
given circuit
Circuits can be
designed in three
ways:
Series
 Parallel
 Series in Parallel
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SIMPLE CIRCUITS
Source
 Load
 Path
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SERIES CIRCUITS
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Has only ONE path
for electrons/current
to flow
Runs through each
load back to source
Voltage drop is same
among all loads
If path or load is
broken will not work
PARALLEL CIRCUITS
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Have multiple paths
and more than one
load.
Voltage across each
path is equal to source
voltage
PARALLEL VS SERIES CIRCUITS
SOLDERING
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A must for electronics
A fusion of allows
which have a low
melting point
 Makes Connections
Permanent and
electrons flow
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Allow Combination of
two or more metals
SOLDER
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Definition:combination of lead
and tin in various
ratios
60/40 solder
 Avoid acid core solder
 Used in electronics
and plumbing
 Low melting point
among metals –
375degrees F(avg)
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SOLDER SAFETY
Wear Safety Goggles
 Avoid contact with
skin and eyes
 Conscience of
soldering iron tip
 Avoid Fumesventilation
 Cold Solder Joint
 Don’t interrupt
someone who is
soldering
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SOLDERING – PROJECT
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Wire Strip 5 Wires
and Solder them
together safely
OHMS LAW
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Relationship between
resistance, current, and
voltage in electrical
circuits.
Extremely important
component in electrical
engineering
Discovered by German
Physicist George Ohm
OHMS LAW
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E – Electromotive
Force
Amount of pressure
causing electrons to
flow
 Greater the pressure
of electrons higher the
voltage
 Measured in Voltage
 Could See “E” or “V”
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E = I (R)
OHMS LAW
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Resistance –
Opposition of current
flow.
Measured in ohms
 Resistors are used to
limit current flow and
divide voltage
 Resistor- Color band
codes
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Variable vs. Fixed
Resistors
R = E/I
OHMS LAW
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Intensity- Measure of
the flow of electrons
per unit of time.
Also known as
Coulomb, current or
intensity
 I or A can be used for
symbols of intensity
 Measured in Amps
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I
= E/R
OHMS LAW
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Power- product of
current and voltage
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Measured in watts
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One watt is equal to
one volt moving one
amp of electricity at
one second
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P = I(E)
ELECTRICAL ENGINEERING PROJECT
Line following mouse?
 Breadboard?
 Solder Project?
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