0

Who built the first electric car in the world. History of creation and development

The article tells about the history of the first electric car, o tom, who created it and when, as well as the prospects for the development of electric vehicles in the future. “Everything new is well forgotten old”. You will be surprised, but electric cars, surprisingly, already exist more… Continue Reading

0

What etch the board, if there is no ferric chloride?

This article discusses some easy ways to PCB etching, in the case when there is no ferric chloride. The etching solution of sulfuric acid and hydrogen peroxide. The water was poured carefully concentrated sulfuric acid at the rate of 20-30 ml per cup of water. Then there… Continue Reading