IT 327 - Supplemental Chap 1 1

Thought of the Day

As the conducting medium in an electric circuit is capable of conveying but a limited current, the maximum capacity depending upon the resistanceoffered by the conductor, and, as separate circuits of different degrees of conductivity may carry currents of widely varying intensity, so human souls are of varied capacity with respect to the higher powers. But as the medium is purified, as obstructions are removed, so resistance to the energy decreases, and the forces manifest themselves with greater intensity. By analogous processes of purification our spirits may be more susceptible to the forces of life, which are emanations from the Holy Spirit.

James E. Talmagefrom Articles of Faith

IT 327 - Supplemental Chap 1 2

PreliminariesIntroductions:

Name

Home

Class Standing (when will you graduate?)

TAs: Ricky Pullan; Kirk Johnson; Taylor BuergerLabs, Homework

Syllabus: Questions?

IT 327 - Supplemental Chap 1 3

BYU Dress & Grooming StandardsThe dress and grooming of both men and women should always be modest, neat, and clean, consistent with the dignity adherent to representing The Church of Jesus Christ of Latter-day Saints and any of its institutions of higher education.

 

Modesty and cleanliness are important values that reflect personal dignity and integrity, through which students, staff, and faculty represent the principles and standards of the Church. Members of the BYU community commit themselves to observe the following standards, which reflect the direction of the Board of Trustees and the Church publication For the Strength of Youth. The Dress and Grooming Standards are as follows:

 

Men

A clean and well-cared-for appearance should be maintained. Clothing is inappropriate when it is sleeveless, revealing, or form fitting. Shorts must be knee-length or longer. Hairstyles should be clean and neat, avoiding extreme styles or colors, and trimmed above the collar, leaving the ear uncovered. Sideburns should not extend below the earlobe or onto the cheek. If worn, moustaches should be neatly trimmed and may not extend beyond or below the corners of the mouth. Men are expected to be clean-shaven; beards are not acceptable. Earrings and other body piercing are not acceptable. Shoes should be worn in all public campus areas. 

Women

A clean and well-cared-for appearance should be maintained. Clothing is inappropriate when it is sleeveless, strapless, backless, or revealing; has slits above the knee; or is form fitting. Dresses, skirts, and shorts must be knee-length or longer. Hairstyles should be clean and neat, avoiding extremes in styles or colors. Excessive ear piercing (more than one per ear) and all other body piercing are not acceptable. Shoes should be worn in all public campus areas.

IT 327 - Supplemental Chap 1 4

Supplemental, Chap 1:DC Electric Circuits

IT 318 - M1 5

 Term

 Units

Unit Abbrev

 Symbol

 Meaning

Voltage Volts V E ElectroMotive Force (EMF)

Current Amperes A I Flow of electrons1 A = 1 Coulomb/sec

Resistance Ohms Ω R Opposition to electron flow

Power Watts W P Energy/unit time – Joules/sec1 W = 1 Joule/sec

Frequency Hertz Hz f Cycles/sec1 Hz = 1 cycle/sec

Electronic Terms

IT 318 - M1 6

 Term

 Units

Unit Abbrev

 Symbol

 Meaning

Voltage Volts V E ElectroMotive Force (EMF)

Current Amperes A I Flow of electrons1 A = 1 Coulomb/sec

Resistance Ohms Ω R Opposition to electron flow

Power Watts W P Energy/unit time – Joules/sec1 W = 1 Joule/sec

Frequency Hertz Hz f Cycles/sec1 Hz = 1 cycle/sec

Electronic Terms

IT 318 - M1 7

 Term

 Units

Unit Abbrev

 Symbol

Voltage

Amperes

Ω

P

Frequency

Electronic Terms

IT 318 - M1 8

Prefix Name

 Symbol

 Multiplier

Prefix Name

 Symbol

 Multiplier

milli m 10-3 kilo k 103

micro µ 10-6 Mega M(illion) 106

nano n(ine) 10-9 Giga G 109

pico p 10-12 Tera T(welve) 1012

femto f(ifteen) 10-15 Peta P 1015

atto a 10-18 Exa E(ighteen) 1018

zepto z 10-21 Zetta Z 1021

yocto y 10-24 Yotta Y 1024

Scientific Prefixes

IT 318 - M1 9

Prefix Name

 Symbol

 Multiplier

Prefix Name

 Symbol

 Multiplier

milli m 10-3 kilo k 103

micro µ 10-6 Mega M(illion) 106

nano n(ine) 10-9 Giga G 109

pico p 10-12 Tera T(welve) 1012

femto f(ifteen) 10-15 Peta P 1015

atto a 10-18 Exa E(ighteen) 1018

zepto z 10-21 Zetta Z 1021

yocto y 10-24 Yotta Y 1024

Scientific Prefixes

IT 318 - M1 10

Prefix Name

 Symbol

 Multiplier

Prefix Name

 Symbol

 Multiplier

milli kilo

µ M(illion)

10-9 109

pico Tera

f(ifteen) P

10-18 1018

Scientific Prefixes

IT 327 - Supplemental Chap 1 11

Resistor Color CodeColor Value (1st &

2nd Stripes)Multiplier (3rd Stripe)

Tolerance Color

Tolerance (%)

Black 0 100 Gold ±5Brown 1 101 Silver ±10Red 2 102 Blank ±20Orange 3 103

Yellow 4 104

Green 5 105

Blue 6 106 Violet 7 107   

Gray 8 108  White 9 109   

Mnemonic: Better Boys Realize Our Young Girls Become Very Great Women

IT 318 - M1 12

IT 327 - Supplemental Chap 1 13

Ohm’s Law• Water: more flow (gallons/min)

comes from:• More pressure• Less opposition

• Electricity: more flow (I) comes from:

• More pressure (E or V)• Less opposition (R)• I = E/R• R = E/I• E = IR

Power FormulaP = IE I = P/E E = P/I P = I²R P = E²/R

IT 318 - M1 14

IT 318 - M1 15

Series Circuits: Voltage Drops

+

-

R1

R2

E1

Element Voltage Drop Current Power

R1

R2

E1

Total

𝑉 𝑅𝑛=𝑉 𝑇∗

𝑅𝑛

𝑅𝑇

Voltage Divider Rule:

∑ 𝐸=¿∑ 𝑉 𝑲𝒊𝒓𝒄𝒉𝒐𝒇 𝒇 ′ 𝒔𝑽𝒐𝒍𝒕𝒂𝒈𝒆 𝑳𝒂𝒘 ¿

IT 327 - Supplemental Chap 1 17

Series Circuits: Voltage Rises

• Ampacity: (if all = 12 Volts)

+

-

Ri

700 Amps ≈3 Amps ≈0.75 Amps

D-Cells AAA-Cells

IT 327 - Supplemental Chap 1 18

Parallel Circuits: Voltage Drops

R1 R2+

-

•

•

E1

Element Voltage Drop Current Power

R1

R2

E1

Total

IT 327 - Supplemental Chap 1 19

Parallel Circuits: Voltage Rises

+

-

•

•

1.5 V @2.0 A +

-

2.0 V @2.5 A

E1 E2

Etotal =Itotal =