Author: dapj

Mark Rollins – Model Railroading

Mark Rollins – Model Railroading –  model railroad information, complete with model railroad circuit diagrams.  Electrical Circuits you can make! With 3D wiring Sketches, easy for the beginner. I enjoy model railroading – HO...

The American QRP Club

The American QRP Club was formed in June 2003, and later incorporated, as a organization of ham radio operating enthusiasts interested in low power operation – these types of hams are called QRPers. The...

Production Notes – Electrical – 02

All Electronic Products have interfaces to external electrical circuits. The power supply is also derived using converters or power supplies. Motors, Heaters and Transformers are examples of components in the electric power circuits. Points...