![LEGO PART 7864 Electric Adapter / Transformer, Train 12V, 220V Type 1 | Rebrickable - Build with LEGO LEGO PART 7864 Electric Adapter / Transformer, Train 12V, 220V Type 1 | Rebrickable - Build with LEGO](https://rebrickable.com/media/parts/photos/7/7864-7-aaeaaf9e-e4f9-42be-8807-7af94e4ff807.jpg)
LEGO PART 7864 Electric Adapter / Transformer, Train 12V, 220V Type 1 | Rebrickable - Build with LEGO
![BrickLink - Set 7864-1 : LEGO Transformer / Controller 12V [Train:Supplemental:12V] - BrickLink Reference Catalog BrickLink - Set 7864-1 : LEGO Transformer / Controller 12V [Train:Supplemental:12V] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/IN/0/7864-1.png)
BrickLink - Set 7864-1 : LEGO Transformer / Controller 12V [Train:Supplemental:12V] - BrickLink Reference Catalog
LEGO 7864 12v Transformer Controller ( 1) : LEGO : Free Download, Borrow, and Streaming : Internet Archive
![Anyone know the secret history of the gray era 12v/4.5v system? - LEGO Train Tech - Eurobricks Forums Anyone know the secret history of the gray era 12v/4.5v system? - LEGO Train Tech - Eurobricks Forums](http://www.brickshelf.com/gallery/Carrera124/Trains/7864.jpg)