| Image | Item No. | Description |
| 706-1 (Inv) | 12V Rail Contact Wire with Transformer Connector
1 Part, 1969
Catalog: Sets: Train: Supplemental: 12V |
| 706-3 (Inv) | 12V Rail Contact Wire with Transformer Connector with Cap
1 Part, 1974
Catalog: Sets: Train: Supplemental: 12V |
| 742-1 (Inv) | 12V Transformer for 110V Pack
1 Part, 1969
Catalog: Sets: Train: Supplemental: 12V |
| 740-2 (Inv) | 12V Transformer for 220V Pack
1 Part, 1969
Catalog: Sets: Train: Supplemental: 12V |
| 741-1 (Inv) | 12V Transformer for 220V Pack
1 Part, 1974
Catalog: Sets: Train: Supplemental: 12V |
| 9833-2 (Inv) | AC Adapter, 120V - 10V Transformer
1 Part, 2000
Catalog: Sets: MINDSTORMS: NXT |
| 45517-1 (Inv) | AC Adapter, 120V - 10V Transformer (for use with 8878, 9693, and 45501)
1 Part, 2015
Catalog: Sets: MINDSTORMS |
| 45517-3 | AC Adapter, 220V - 10V Transformer (for use with 8878, 9693, and 45501) - BS 1363 Plug
2013
Catalog: Sets: MINDSTORMS |
| 45517-2 (Inv) | AC Adapter, 220V - 10V Transformer (for use with 8878, 9693, and 45501) - CEE 7 Plug
1 Part, 2013
Catalog: Sets: MINDSTORMS |
| 9833-1 (Inv) | AC Adapter, 230V - 10V Transformer
1 Part, 1996
Catalog: Sets: Educational & Dacta: Supplemental |
| 9833-3 (Inv) | AC Adapter, 230V - 10V Transformer Type G Plug (British)
1 Part, 2006
Catalog: Sets: MINDSTORMS: NXT |
| 9750-1 (Inv) | Interface A (LEGO Interface Box & Transformer)
3 Parts, 1 Book, 1986
Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 8887-1 (Inv) | Power Functions Transformer 10VDC
1 Part, 2009
Catalog: Sets: Power Functions |
| 4561-1 (Inv) | Railway Express with Transformer and Speed Regulator
618 Parts, 9 Minifigures, 1999
Catalog: Sets: Train: 9V |
| K9833-2 (Inv) | Rechargeable Battery Set (AC Adapter, 230V - 10V Transformer)
2 Sets, 2006
Catalog: Sets: MINDSTORMS: NXT |
| 7864-1 (Inv) | Transformer / Controller 12V
28 Parts, 1980
Catalog: Sets: Train: Supplemental: 12V |
| 4548-1 (Inv) | Transformer and Speed Regulator
3 Parts, 1991
Catalog: Sets: Train: Supplemental: 9V |
| 94164 | Electric Power Adapter / Transformer, 100V - 240V / 10V DC - Angled Top
Catalog: Parts: Electric |
| 16521 | Electric Power Adapter / Transformer, 100V - 240V / 10V DC - Square Top
Catalog: Parts: Electric |
| bb0274 | Electric Power Adapter / Transformer, 7V AC - 1.6 amp
Catalog: Parts: Electric |
| 16523 | Electric Power Adapter / Transformer, Input: 100V - 240V AC / Output: 10V DC (Square Top)
Catalog: Parts: Electric |
| 45541 | Electric Power Adapter / Transformer, Input: 120V AC / Output: 10.8V AC
Catalog: Parts: Electric |
| 86444 | Electric Power Adapter / Transformer, Input: 120V AC / Output: 10V DC
Catalog: Parts: Electric |
| 45540 | Electric Power Adapter / Transformer, Input: 230V AC / Output: 10V AC (UK ONTOP Version)
Catalog: Parts: Electric |
| 71140 | Electric Power Adapter / Transformer, Input: 240V AC / Output: 10V AC (UK TRADANIA Version)
Catalog: Parts: Electric |
| bb0293 | Electric, Train 12V Transformer for 110V - Type 1
Catalog: Parts: Electric, Train |
| 740 | Electric, Train 12V Transformer for 220V - Type 1
Catalog: Parts: Electric, Train |
| bb0092 | Electric, Train 12V Transformer for 220V - Type 2
Catalog: Parts: Electric, Train |
| 7864 | Electric, Train 12V Transformer for 220V - Type 3
Catalog: Parts: Electric, Train |
| 7864a | Electric, Train 12V Transformer for 220V - Type 3 (Continental European)
Catalog: Parts: Electric, Train |
| 7864c01 (Inv) | Electric, Train 12V Transformer for 220V - Type 3 with Output Cover Plug
Catalog: Parts: Electric, Train |
| 7864ac01 (Inv) | Electric, Train 12V Transformer for 220V - Type 3 with Output Cover Plug (Continental European)
Catalog: Parts: Electric, Train |
| 7864b | Electric, Train 12V Transformer for 230V - Type 3 (UK)
Catalog: Parts: Electric, Train |
| 7864bc01 (Inv) | Electric, Train 12V Transformer for 230V - Type 3 with Output Cover Plug (UK)
Catalog: Parts: Electric, Train |
| 7864c | Electric, Train 12V Transformer for 240V - Type 3 (Australian)
Catalog: Parts: Electric, Train |
| 7864cc01 (Inv) | Electric, Train 12V Transformer for 240V - Type 3 with Output Cover Plug (Australian)
Catalog: Parts: Electric, Train |
| x471 | Electric, Train 12V Transformer Speed Throttle
Catalog: Parts: Electric, Train |
| bb0529 | Electric, Train 12VAC Output Cover for Train 12V Transformer Type 3
Catalog: Parts: Electric, Train |
| 120403 | Paper Information Note for 9V Transformer - 120403
Catalog: Parts: Paper |
| 108679 | Paper Information Note for Parents, 12V Transformer - 108679
Catalog: Parts: Paper |
| 108681 | Paper Information Note for Parents, 12V Transformer - 108681
Catalog: Parts: Paper |
| 15068pb135 | Slope, Curved 2 x 2 x 2/3 with Silver and Medium Azure Transformer Pattern (Sticker) - Set 70165
Catalog: Parts: Slope, Curved, Decorated |
| 93273pb083 | Slope, Curved 4 x 1 x 2/3 Double with Lime, Silver and Black Circuitry, Microchips and Transformer Pattern (Sticker) - Set 70165
Catalog: Parts: Slope, Curved, Decorated |