The MATSUNAGA series of variable auto transformers are suitable for any equipment which is controlled by voltage variation. Output voltage is continuously adjustable over a very wide range, and is little affected by load variations.

The series is also suitable for compensating supply voltage. In contrast with a rheostat, it is capable of increasing voltage and operates at high efficiency. Due to the high efficiency, excellent power factor, and great versatility, Matsunaga slide regulators are suitable for a wide range of applications.

The SD types illustrated have been manufactured for Australian use. Models have Australian standard output sockets and are fitted with input cords and plugs. A voltmeter is fitted as standard equipment in all bench mounting models.