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E LECTRICAL E NGINEERING Mr. Kerins. E LECTRICAL ENGINEERING Definition- is the design and...
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Transcript of E LECTRICAL E NGINEERING Mr. Kerins. E LECTRICAL ENGINEERING Definition- is the design and...
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ELECTRICAL ENGINEERINGMr. Kerins
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ELECTRICAL ENGINEERING Definition- is the
design and construction of electrical and electronic components and devices
21% of all engineers are Electrical
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ELECTRICAL ENGINEERING DEGREE REQ’S
Coursework: Electricity Electronics Chemistry Biology Physics High level Math Statistics
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IEEE Institute of Electrical
and electronics Engineers
375,000 members
160 Countries
Goal and Purpose; Dedicated to advancing
technological innovation and excellence through their publications, conferences, standards, and activities
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ELECTRONIC BASICS Flow of Electrons
Negative to Positive Moving At Speed of
Light (24 x around earth in 1 second)
Schematics are a must
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ELECTRONIC BASICS3
Requirements for a complete circuit
SourceLoad Path
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TYPES OF ELECTRICAL CIRCUITS
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 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
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PARALLEL CIRCUITS Have multiple paths
and more than one load.
Voltage across each path is equal to source voltage
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PARALLEL VS SERIES CIRCUITS
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SOLDERING A must for
electronics
A fusion of allows which have a low melting point
Makes Connections Permanent and electrons flow
Allow Combination of two or more metals
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SOLDER 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 Fumes-
ventilation Cold Solder Joint Don’t interrupt
someone who is soldering
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SOLDERING – PROJECT Wire Strip 5 Wires
and Solder them together safely
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OHMS LAW
Relationship between resistance, current, and voltage in electrical circuits.
Extremely important component in electrical engineering
Discovered by German Physicist George Ohm
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OHMS LAW
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”
E = I (R)
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OHMS LAW
Resistance – Opposition of current flow. Measured in ohms Resistors are used to
limit current flow and divide voltage
Resistor- Color band codes
Variable vs. Fixed Resistors
R = E/I
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OHMS LAW
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
I = E/R
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OHMS LAW
Power- product of current and voltage Measured in watts
One watt is equal to one volt moving one amp of electricity at one second
P = I(E)
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ELECTRICAL ENGINEERING PROJECT
Line following mouse?
Breadboard? Solder Project?