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See A. R. Johnson & Murphey CTAE 2015 at the bottom of this long web page.
Topics in Math and Science Supported by Solder and Circuits
Middle-School Math
Four Functions used in Ohm's Law, series/parallel circuits, and amplifiers, measure to confirm with digital multimeter
Algebra to get permutations of Ohm's Law and power formula
Inductor calculation for radio tuning using L of a helix in microhenry=(.8r2N2) / (6r+9l+10b) (inch measurements) (r radius, l length, b thickness of the layers if multilayer, N turns)
Square/square root to find resistor power
Ratio applied to transformers
High-School Math
Scientific notation (effects of 10-6 to 108 volts, effects of 10-6 to 105 amps)
Two simultaneous equations to calculate voltage divider
Audio filter calculations using ratios
Imaginary numbers explain resonance, 2*pi*f=1/(LC).5
Logarithms for audio dB
Matrix algebra solves networks
Capacitor ohms=1/(2*pi*f*C), inductor ohms=2*pi*f*L, solve for the unknown
Algebra to solve for one unknown using C=It/V or L=Vt/I
Logic: Atmel brand programmable logic for AND, OR, Invert, and frequency division
Excel: maximize Q of an inductor
Science
Electricity
Resistance=Volts/Amps
Power=Current*Volts
Typical speaker ohms are 4 and 8 ohms, power .05W to 20W
Temp and light sensing
Charging NiMH cells from solar cells
Chemistry: remove oxide before soldering, etch printed circuit board with ferric chloride
Chemistry: Molymod brand molecular modeling
Organ-pipe resonance, measure with microphone and frequency meter
A. R. Johnson & Murphey CTAE 2015 John Engelbrecht Augusta Solder and Circuits
https://sites.google.com/site/solderandcircuits 12311 Culebra Road #6104 San Antonio johnenge@earthlink.net
(You are seeing this at https://sites.google.com/site/solderandcircuits/home/teachers--topics-in-common-with-your-teaching)
Electrical Engineering: electronic circuit design, printed circuit board fabrication, analog & digital, Atmel logic chip programming, Arduino C++ programming, Linux, nonprofit STEM education offerings
These fields of Electrical Engineering are interesting because of new, low-cost building blocks: Arduino, Raspberry Pi; Adafruit & Jameco.com wireless, RFID, 3-axis gyro/accelerometer, GPS, MP3, touch screen
Salary: $55,000 for full-time; many electrical engineering jobs have become contract (high $/hour but you have to be an entrepreneur)
My personal tech & computer programs: Excel, CorelDRAW, logic programming, Arduino development environment. Windows 8.1 and Linux (Ubuntu, free, virus resistant, runs on your neighbor's discarded tower computer)
Soft skills: writing, drawing (technical diagrams), negotiating (nothing is handed to you, you must network, make your own opportunities, & help others find opportunities), pursue technical certifications such as Cisco network certifications & CompTIA Network+, business ethics, patent rights
High school courses: STEM. College: associate degree (Augusta Tech) or bachelor degree (Univ of GA or GA Institute of Technology)
Advice to high-school student: 1) go with a buddy to the above colleges & talk to a program chairman or professor, get a tour (do both of these, make appointments) 2) Find a way to build electrical circuits, starting with little D.C. motors and LEDs. https://sites.google.com/site/solderandcircuits/home/progress-using-switches-and-lamps If you get to an EE or physics lab in college without ever building a circuit, you are at a big disadvantage.
The job changes with time: outsourcing, obsolescence of skills, need to keep learning. Duration of non-management, technical employment: 10-20 years. One of the leading fields for new employment, but competition from China, India. Power industry (Georgia Power) & govt. have longer-duration employment.
Local jobs: industrial instrumentation & process control (Instrument Society of America & IEEE meet monthly, Mr. Engelbrecht can help you attend a meeting). Unpaid internship (summer) with Mr. Engelbrecht's initiative, https://sites.google.com/site/solderandcircuits in Grovetown.
Electrical Engineering is NOT train engineer, broadcast engineer
Is STEM employment all they say it is? https://sites.google.com/site/solderandcircuits/home/more-circuit-design/stem-reality
Women in engineering: does not appeal to many women, university engineering enrollment of women is down, there are some local women in engineering in IEEE/ISA you can talk to, EE jobs other than power & government do not have a lot of “security of employment”
Other engineering fields: mechanical, chemical, materials, biomed, automotive, civil. Electrical Engineering is often called ECE, Electrical and Computer Engineering, in the universities. Computer Science is not EE.
EE fields: not so much robots. Networking (world wide networks, cell phone systems), power (Georgia Power), NSA at Baltimore (Ft. Meade), semiconductors including microprocessors (Intel) & “embedded processors” ($2 chips), digital signal processing, radar, manufacturing control (ISA in Augusta). Big employers: Honeywell, Northrup Grumman, Boeing, Dell, Bechtel, Schlumberger, Intel, NSA, Micron Technology, APC, Keysight, National Instruments.
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