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Transformer / Controller 12V (7864-1) is a 12V LEGO set released in 1980 with 34 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing 12V sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 20 unique part types.
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Parts in this set
20 parts · updating…
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Brick 1 x 83008 · ×2 · Black -
Brick 2 x 43001 · ×2 · Black -
Brick Round 2 x 2 with Axle Hole3941 · ×4 · Black -
Control Switch, Train 12V Transformer Speed Throttleupn0260 · ×1 · Black -
Electric Adapter / Transformer, Train 12V, 220V Type 17864c01 · ×1 · Light Gray -
![Electric Connector, 1 Way Male Squared [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/7/765c01.png)
Electric Connector, 1 Way Male Squared [Complete Assembly]765c01 · ×4 · Light Gray -
Plate 1 x 63666 · ×1 · Black -
Plate 2 x 43020 · ×2 · Light Gray -
Plate 4 x 63032 · ×1 · Black -
Slope 45° 2 x 33038 · ×4 · Black -
Technic Axle 23704 · ×1 · Black -
Technic Axle 63706 · ×1 · Black -
Technic Axle 83707 · ×1 · Black -
![Technic Brick 1 x 4 [3 Pin Holes]](https://cdn.rebrickable.com/media/parts/elements/370126.jpg)
Technic Brick 1 x 4 [3 Pin Holes]3701 · ×2 · Black -
Technic Bush3713 · ×2 · Light Gray -
![Technic Gear 24 Tooth [Old Style - Three axle holes]](https://cdn.rebrickable.com/media/parts/ldraw/7/3648a.png)
Technic Gear 24 Tooth [Old Style - Three axle holes]3648a · ×1 · Light Gray -
Technic Gear 24 Tooth Crown with Flat Teeth3650a · ×1 · Light Gray -
![Technic Plate 2 x 8 [7 Holes]](https://cdn.rebrickable.com/media/parts/elements/373826.jpg)
Technic Plate 2 x 8 [7 Holes]3738 · ×1 · Black -
User Guide, Information Note for Parents, 12V Transformer - 108681108681 · ×1 · [No Color/Any Color] -
![Wire 12V / 4.5V with Two Leads [Undetermined Length]](https://cdn.rebrickable.com/media/parts/photos/7/x466-7-25bbfc56-279c-42a8-977e-b193111f3579.jpg)
Wire 12V / 4.5V with Two Leads [Undetermined Length]74503 · ×1 · Light Gray