Step-up frequency changer
R. J. Wurm, L. J. Stratton · Transactions of the American Institute of Electrical Engineers Part II Applications and Industry · 1960
WITH THE SCIENTIFIC advancement of the aircraft and missile fields, a need arises for power at high frequencies. High frequency power is needed in commercial and industrial fields as well; for example, in fluorescent lighting and ultrasonic cleaning. Presently available semiconductor devices can be used in the construction of completely static frequency conversion equipment, capable of power outputs of many kilowatts at frequencies as high as 25 kc.