Electronics and Wiring for Model Railways by Andrew Duckworth
Author:Andrew Duckworth
Language: eng
Format: epub
Publisher: Crowood
Fig. 6.40 A range of different types of magnetic switch. JPR ELECTRONICS
Fig. 6.40a Normally open contact.
Fig. 6.40b Changeover contact. BRIMAL
Fig. 6.40c Normally closed contact. BRIMAL
Reed switches in glass form are very delicate and should be handled with care – the one illustrated is only 10mm long. See the section on installing reed switches for the best method of bending, cutting and soldering them.
THE SPRING-LEVER SWITCH
A spring-lever switch has a C spring to snap it from one state to the other. The switch has different actuation forces, dependent on the strength of the C spring: this can vary from 0.25N to 0.6N. Most spring-lever switches used on model railways have changeover contacts, as shown. They are not latching switches, so when the pressure is removed the switch will snap back to its resting state.
The drawing shows how a spring-lever switch is wired to indicate the position of a set of points. The R and G can be wired to red or green indicators for a visual indication as to the state of the points.
Download
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.
Dollhouses | Dolls & Doll Clothing |
Miniatures | Model Trains |
Models | Stuffed Animals |
Toymaking | Wood Toys |
On Writing A Memoir of the Craft by Stephen King(4191)
The Doodle Revolution by Sunni Brown(4018)
A Simplified Life by Emily Ley(3556)
Mummy Knew by Lisa James(3153)
Marijuana Grower's Handbook by Ed Rosenthal(3103)
Paper Parties by Erin Hung(3031)
Better Homes and Gardens New Cookbook by Better Homes & Gardens(2936)
Figure Drawing for Artists by Steve Huston(2778)
Draw Your Day by Samantha Dion Baker(2693)
The Genius of Japanese Carpentry by Azby Brown(2590)
Japanese Design by Patricia J. Graham(2540)
Lions and Lace by Meagan Mckinney(2479)
Dangerous Girls by Haas Abigail(2455)
The Curated Closet by Anuschka Rees(2368)
Zero to Make by David Lang(2338)
How to Make Your Own Soap by Sally Hornsey(2320)
The Wardrobe Wakeup by Lois Joy Johnson(2218)
The Code Book by Simon Singh(2191)
The Checklist Manifesto by Atul Gawande(2185)