Variable-frequency drives

British Library Online Contents | 1993

Variable frequency drives for lifts

Shiner, A. J. / Chartered Institution of Building Services Engineers | British Library Conference Proceedings | 1995

What drives a variable-frequency drive?

Online Contents | 1995

Technology Quick Hit - Variable-frequency drives

Online Contents | 2003

Pumping Energy and Variable Frequency Drives

Bernier, M. A. / Bourret, B. | British Library Online Contents | 1999