4548 Transformer and Speed Regulator

4548 Electric Train Speed Regulator is a Trains set released in 1991.
== Description ==
The speed regulator has twelve settings to regulate the speed of the user's 9V motor and six speed settings each for forward and reverse. It is powered by an external 9V power supply - therefore it differs from its predecessor set 7864 Transformer / Speed Controller 12V which plugged directly into a mains socket and therefore contained the mains transformer itself.
== Notes ==
* This is the only 9V set which used mains power rather than batteries.
*The regulator unit uses a version of the same casing as the 8094 TECHNIC Control Center launched the previous year.
*This set was included in the Product Collections sets 65537 Classic Freight Train, and K2159 Holiday Train Starter Collection and K4548 9-V Train Accessory Collection.
== External links ==
Category:Trains
Category:9V
Category:Trains Accessories
Category:4000 sets
Category:1992 sets