My Library - Magazine Articles By Don W. Hansen

Applying Modern Electronics Technology to Model Railroading

Magazine:
Model Railroader 1976-12
Page:
108
Category:
Electronics
Description:
The author explains how to build a 5-volt power supply, which is needed for transistor-based circuits.

Grade Crossing Flasher Circuit

Magazine:
Model Railroader 1976-12
Page:
111
Category:
Electronics
Description:
A train approaches a grade crossing and warning flashers turn on. The flashers continue operating until the train is safely past the crossing. You can add this feature to your layout by building this flasher circuit. It requires a 5-volt power supplies, which was covered in the other article of this issue.

Symposium on Electronics

Magazine:
Model Railroader 1981-03
Page:
106
Category:
Electronics
Description:
This installment has two circuits. The first is a simple chase light circuit, such as might be used for marques. The second is a signaling circuit that detects train movement across two reed switches to control things such as crossing flashers, signals, block-in-use signals, etc.

Symposium on Electronics

Magazine:
Model Railroader 1983-01
Page:
116
Category:
Electronics
Description:
Correction of the Jan. 1982 light-actuated action crossing circuit, and the Mar. 1982 pulse add-on throttle. New topics include: diesel sound generator, and onboard steam sound.

Symposium on Electronics

Magazine:
Model Railroader 1985-11
Page:
114
Category:
Electronics
Description:
The electronic schematic of an automatic switching circuit is covered. The idea is that an engine can be moved automatically from a point A to a point B, back again, and, with the turnout automatically flipped, on to point C and back to A. This might be good for an automatic Doodlebug passenger service on a layout.

Symposium on Electronics

Magazine:
Model Railroader 1986-02
Page:
104
Category:
Electronics
Description:
This installment covers the design of an infrared photo railroad crossing detector circuit.

Symposium on Electronics

Magazine:
Model Railroader 1987-11
Page:
135
Category:
Electronics
Description:
This article describes how to build a digital throttle. It is a very large project.

Symposium on Electronics

Magazine:
Model Railroader 1988-02
Page:
118
Category:
Electronics
Description:
This installment covers an infrared led/photo transistor automatic train control circuit to allow a train to move back and forth without operator intervention.