My Library - Magazine Articles By Bob Kendall

A Power Supply For Micro Lamps

Magazine:
N-Scale 2003-03/04
Page:
33
Category:
Electronics
Description:
Two solutions to powering 1.5 Volt micro lamps. One uses a collection of diodes to reduce the voltage to the lamps (with support for a limited number of lamps), and a full-blown regulator supply that can handle a predetermined number of lamps.

Blinking Barricades

Magazine:
N-Scale 2000-07/08
Page:
50
Category:
Electronics
Scale:
N
Description:
This article shows, in great detail, how to construct a scale barricade with a blinking LED. Also includes information about making some changes to the circuit to obtain different results.

Coil Saver

Magazine:
N-Scale 2003-07/08
Page:
36
Category:
Electronics
Description:
Building a circuit that will protect the coil switch machine from being fried by an operator who pushes the button too long. The article includes photos and schematic drawings.

Components Part IIIa

Magazine:
N-Scale 2003-01/02
Page:
33
Category:
Electronics
Description:
Covers various switches (toggle, slide, etc.), relays, SCR (also known as triacs), transformers, and optical devices (such photocells, IR LEDs). Includes a diagram for wiring up a DPDT toggle switch which can be used to reverse electricity, and a diagram for controlling relays using transistors.

Electronic Workshop

Magazine:
N-Scale 2006-07/08
Page:
52
Category:
Electronics
Description:
Turnout position indicators. Various solutions to the same problem. Covers stall-motor switch machines. Lots of schematics, and a parts list.

Electronics For Model Railroaders 101 Part III

Magazine:
N-Scale 2002-10/11
Page:
60
Category:
Electronics
Description:
Description of typical electronics projects components. Standard resistor value chart.

Electronics For Model Railroaders 101 Part IV

Magazine:
N-Scale 2003-05/06
Page:
34
Category:
Electronics
Description:
Dealing with 110 volt components.

End-of-train Device

Magazine:
N-Scale 2000-09/10
Page:
38
Category:
Electronics
Scale:
N
Description:
This article shows how to install an end-of-train device in a boxcar. An on/off switch and battery power the LED.

Kids and Model Railroading

Magazine:
N-Scale 2002-10/11
Page:
42
Category:
Model Railroads and People

Layout Lighting

Magazine:
N-Scale 2002-07/08
Page:
56
Category:
Electronics
Description:
The author describes how he built a control panel to control the structure lights on his layout.

Level Crossing Bell

Magazine:
N-Scale 2004-03/04
Page:
41
Category:
Electronics
Scale:
N
Description:
Using a conventional door bell as the ringer for grade crossing warning signal.

New Life for an Old Power Pack

Magazine:
N-Scale 2002-03/04
Page:
40
Category:
Electronics
Description:
Converting the AC output of an old hobby transformer into a quality 12-volt DC power supply with just a handful of parts.

Preparing Structures for Interior Lighting

Magazine:
N-Scale 2002-11/12
Page:
53
Category:
Electronics
Description:
Methods of lamps, installation, and leak detection.

The Electronics Workshop

Magazine:
N-Scale 2006-05/06
Page:
23
Category:
Electronics
Description:
When building a large number of identical electronic components, taking the time to build a tester is worth it. The author needed 44 capacitor-discharge controllers for his yard's turnouts, so he built this tester. Includes diagrams and parts list.

The Electronics Workshop Part 11

Magazine:
N-Scale 2005-11/12
Page:
25
Category:
Electronics
Description:
This installment covers how to do troubleshooting.

Track Tester

Magazine:
N-Scale 2005-07/08
Page:
22
Category:
Electronics
Description:
A simple device that verifies track power, polarity, and whether or not there's a short. One light will light up indicating that the rail directly under it is the positive rail. Disconnecting power to the track, and flipping a switch on the device will allow it to test against a short. Another light will light up in the case of a short. Parts list and diagrams are included.

Turnout Position Indicator

Magazine:
N-Scale 2003-11/12
Page:
50
Category:
Electronics
Description:
Various ways to display the current position of a turnout.

Turnout Testers

Magazine:
N-Scale 2005-09/10
Page:
22
Category:
Electronics
Description:
The author describes how he built several testers for testing solenoid-operated turnouts. One is a switch machine tester, and the other is a turnout continuity tester. Schematics and parts lists are included.