This is the latest most mature schematic for the Troller Autopulse model 20, known as the 'Transamp 1'. It may also serve as a good starting point for any of the Transpack(s) including the 'twins'. The momentum units are a different animal.
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This documentation is for educational and historical preservation purposes only. The author is an amateur hobbyist, not a licensed electrical engineer. Vintage train power packs contain high-voltage components that can be lethal.
- Work at your own risk: I am not responsible for any damage to your equipment, property, or personal injury resulting from the use of these schematics.
- Accuracy: While I have done my best to trace these circuits, they may contain errors or reflect specific production runs that differ from your unit.
This work is licensed under a Creative Commons Attribution 4.0 International License. © 2026 [Ed Graffius/THE-Quaddriver].