The single-core magnetic amplifier as a computer element

THE magnetic amplifier and magnetic devices in general have garnered an enviable reputation for reliability and maintenance-free operation1 in their not-so-short history.2 For these reasons these devices have been a subject of considerable interest3, 4 to the computer field wherein electron tube failure is a major headache. There have been many magnetic devices developed for use in this field, but for the most part they either have been slow (requiring several cycles of excitation frequency for build-up of output) or have not exhibited any considerable power gain. Speed of response is quite important for this determines computing speed. Power gain is quite important, for in a given computer these devices must be cascaded so that one device operates others as well as associated registering or indicating devices.