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Electrical and Electronics

Inexpensive White LEDs From Christmas Light Sets

Inexpensive White LEDs From Christmas Light Sets

LEDs provide a superior lighting solution over miniature bulbs. LEDs stay cool when lit and are very bright, energy efficient, and extremely reliable. Their long life and reliability are extremely important when installed in engines and buildings, where you really don't want to ever o...
Building Your First Model Railroad, Part 5

WGH Video: Building Your First Model Railroad, Part 5

This video series, hosted by Michael Gross, teaches you simple how-to techniques to take an HO scale electric train set and make it a scenic model railroad. This episode discusses DC train control and wiring a power pak....
Easy Block Detection and 2-Color Signals

Easy Block Detection and 2-Color Signals | Part 3: 2-Color Signals

Model railroad signals typically provide protection against running into an occupied block or running through an improperly aligned turnout. Most model railroads can be signaled using three types of signals: a one-headed block signal, a two-headed interlocking signal, and a one-headed...
Easy Block Detection Step by Step Assembly Instructions

Easy Block Detection and 2-Color Signals | Part 2: Step by Step Assembly Instructions

Step-by-step assembly instructions for a block detector with built-in delay and logic for 2-color signal indication....
Easy Block Detection and 2-Color Signals

Easy Block Detection and 2-Color Signals | Part 1: Detection Systems and Circuits

An overview of model railroad detection types and a method of detection using an optoisolator....
Scratchbuilt Searchlight Signal

Home Made Searchlight Signals

Although the cost of the materials is small, you can produce a very believable searchlight signal with these simple parts....