The ladder for fishes is a construction which reduces environmental impact caused by hydro power plants and it is this post’s subject.
Voltage multiplier circuits
In this post will be shown how it is possible to produce high voltages only with diodes and capacitors. These circuits are the voltage multipliers.
News: first train moved by hydrogen
The first train moved by hydrogen is ready and enters in operation in Germany.
Basic concepts of alternate current (AC)
Meeting requests, the subject is about basic concepts of AC. Has been already mentioned AC in the post about electromagnetism, this post will go deeper.
50 and 60 Hz, what is the difference?
Why some countries adopt 60 Hz electrical energy and others 50 Hz and what is the difference between the two frequencies? It is this post’s subject.
Visit to Ilha Solteira hydro power plant
This post is about the visit to Ilha Solteira (Single Island) hydro power plant. Stays in the Paraná river between the municipalities of Selvíria, in Mato Grosso do Sul state and Ilha Solteira, in São Paulo state.
Electrical e-Library in Geek City 2018
Here in Curitiba, it occurred the Geek City 2018, a three days event about technology and entertainment, it is the biggest of south Brazil. I will show what I saw in the second day.
Circuit analysis (Part 2)
In this second part, will be presented two circuit analysis methods. Will be shown only DC circuits with resistors.
Meet the rhodium
This post’s subject is the element rhodium. Lately it has become a very valuable metal. Will be shown your properties, biggest reserves, extraction and applications.
Arduino tutorial (Part 9, music and 4×4 keypad)
This post is the part 9 of Arduino tutorial. Will be shown how to play music using a buzzer or a speaker and how to use a matrix keypad 4×4.
