catto.ar
0
Betelgeuse Bellatrix Mintaka Alnilam Alnitak Saiph Rigel

Electronics, from technician to engineer

Two complete curricula developed topic by topic: the Electronics Technician program (years 4–7 of technical secondary school) and the Electronic Engineering degree at the UTN (Argentina's National Technological University). Theory, animated diagrams, worked examples, lab practice and self-assessment.

Technician4years17subjects95topics88pages
Engineering6levels37subjects321core topics321pages

"Omnes sumus in canale, pauci autem ad astra vident"

Little pig with wings flying toward the stars
Q&A forum (in Spanish) Stuck on a topic? Ask in the forum (in Spanish): other students and teachers will answer. Ask →

The four years of the technician program

Pick a subject to see its topics. Each topic has its own full page.

Year 4 4 subjects · 19 topics
Year 5 4 subjects · 21 topics
Year 6 4 subjects · 33 topics
Year 7 5 subjects · 22 topics

The six levels of the engineering degree

The same breakdown for the degree program. Topics with their own page are linked; the rest are still in development.

Level 1 7 subjects · 53 topics
Level 2 7 subjects · 87 topics
Level 3 7 subjects · 58 topics
Level 4 7 subjects · 60 topics
Level 5 7 subjects · 55 topics
Level 6 2 subjects · 8 topics

How they relate to each other

The curriculum is not a list: topics come back year after year, each time in greater depth. One map for the technical school and another for the degree program.

🗺️

Topic Map · Electronics Technician Program

Three views of the complete program: the mind map year by year, the matrix showing how deeply each subject covers each topic, and the explorer that follows a cross-cutting topic from its introduction to its application.

Interactive Curriculum For planning
Open the map → 🎓

Topic Map · Electronic Engineering

The same map, one step up: the 37 subjects and 321 core topics of the degree program, according to the UTN curriculum design (2023 curriculum). It applies to all the regional faculties.

UTN 6 levels 2023 curriculum
Open the map →

Tools and publications

Calculators, simulators and notes that go along with the subjects. They run in the browser, with nothing to install.

🔬

Instrument simulator

A lab bench with nine instruments: two oscilloscopes, a spectrum analyzer, two generators, a multiplier, an adder and two filters. BNC cables are connected by dragging, and you can set up and compare double sideband, AM and the two single-sideband variants.

Interactive Electronics Modulation
Enter the bench → 🎨

Resistor calculator

Get a resistor's value from its color code. For 4 and 5 bands, with the color table and the calculation step by step.

Interactive Electronics
Open calculator → 🔢

SI converter and symbols

Convert between International System prefixes (pico, nano, micro, kilo…), decode the capacitor code and copy Greek and electronics symbols.

Interactive Electronics
Open tool → 🔀

Digital logic

Interactive course: binary numbers, logic gates (with 40XX ICs), a circuit builder with truth table, Karnaugh map and simplification, sequential logic and the datasheets of the ICs.

Interactive Electronics
Open course → ⏱️

LM555 simulator

Astable and monostable: choose R and C and watch the capacitor charge and discharge next to the timing chart, with the equations, reverse design and the datasheet.

Interactive Electronics
Open simulator → 🔋

Regulated power supply with the LM317

From mains AC to a stable, adjustable DC: see how the signal is transformed at each stage, with the equations, the circuit and the datasheet.

Interactive Electronics
Open simulator → 🔺

Operational amplifiers

From the fundamentals to the instrumentation amplifier: each configuration with its schematic, its equation and the step-by-step mathematical derivation of the four basic amplifiers.

Interactive Electronics
Open card → 🎛️

Bipolar transistors

From the transistor effect to signal amplifiers: characteristic curves, load line, the transistor as a switch and as an amplifier, biasing, regulated power supplies, common emitter and common collector, and Darlington. With live diagrams and calculations.

Interactive Electronics
Open card → 📡

MC1496 · Product modulator

The classic balanced modulator: what it means to multiply two signals, DSB-SC versus AM, the IC inside and the circuit of Figure 27 of its datasheet, with live oscilloscopes and spectra.

Interactive Telecommunications
Open card → ⚡

Vector study of AC

Where the sine wave comes from, starting with a rotating vector, peak and RMS values, how R, L and C behave under alternating current, impedance and resonance, the plot of V against I and the three powers. All animated, with exercises at the end.

Interactive Electrical Technology
Open card → 📻

Q code and Morse

The Q code used by amateur radio operators, the tree that shows how letters are built in Morse, and a key trainer for practicing sending with the keyboard.

Interactive Telecommunications
Open card →

The workshop

What isn't electronics but is here anyway.

🐷

The catto.ar workshop

A chessboard to play with a friend, the scientific calculator and cursive handwriting practice. Odds and ends that kept turning up.

Chess Calculator Cursive
Enter the workshop →
✉️

Email

diegoscattaneo@gmail.com

Write → · For questions, material or collaborations. 🎸

Cuatro Menguantes

My band. Discography, shows and news.

cuatromenguantes.com.ar →
👁️

Visits

…

Thanks for stopping by ⭐
☕

Buy me a coffee

Everything here is free to use at no cost. If it helped you study or teach and you want to lend a hand with what it costs to keep it going, it is appreciated.

cafecito.app → 🤝

Sponsors

The site is free to use and sustains itself. If your institution, your business or your club would like to support it, write to me and we will set up the space.

I want to sponsor →
New · catto.ar catto.ar T-shirts are coming A black T-shirt with Orion on the back and the motto «Omnes sumus in canale, pauci autem ad astra vident». On the front, catto.ar over the chest. 👕 All sizes ✦ Orion on the back 🎨 White and light-blue print Order yours! → Black catto.ar T-shirt: the brand over the chest on the front; on the back, the Orion constellation, catto.ar and the Latin motto.