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QRP and homebrew by DL2YEO

“My name is Udo and I am living in the small village called Spenge, about 15 km north of Bielefeld. The DARC radio club is ‘OV Widukind – N59’ and the locator is JO42FD. I spend a part of my freetime with designing circuits and home-brewing electronic devices…”

QRP and homebrew by DL2YEO

  • Front Panel Design
  • Some useful Tables
  • 13.8 V / 15 A from a PC
  • 250 W S.M.P.S.
  • Analogue Frequency Display
  • Oscillators

QRP and homebrew by DL2YEO

“The electronics industry uses several methods for labelling front panels and enclosures, including screen printing, press forming, erosion, lasers etc.. The common factor of these techniques is that they are generally beyond the home constructor. Having these parts specially made commercially can be very expensive, and the only alternative is standardized scales and fonts.”

Elektronik – Basteln – Projekte – German

Elektronik – Basteln – Projekte – GermanTimer 555

“The electronics Kompendium.de is the website about electronics, computer technology, communications and networking technology for students, apprentices and students.”

( after Google Translate )

Timer 555

This book summarizes the articles and mini-courses by Thomas Schaerer and Patrick on the timer 555 together.

  • wide scope of applications
  • CMOS-Version practical tips to CMOS version
  • alternative timer and clock circuits

The electronics workshop is a combination of fundamentals, application-oriented circuits and extracts from data sheets.

Elektronik-Magazin – Design info and circuits in german