High-frequency operation of self-saturating magnetic amplifiers

THE supply frequency of magnetic amplifiers has been restricted largely to the readily available 60-cycle-per-second (cps) and 400-cps power sources. Recent developments in high-frequency power supplies which have ruggedness and reliability commensurate with magnetic amplifiers have made it practical to operate magnetic amplifiers at supply frequencies of over 400 cps. Several papers have described improved frequency multiplier techniques1-3 which can be used to supply power for magnetic amplifiers in the audio range.