12 Oscilloscope

The Heathkit model O-12 Laboratory Oscilloscope, when properly constructed will represent a precision instrument capable of years of service. It input characteristics include a selector switch that permits the use of external input through panel terminal, line-frequency sweep of variable phase or internal sweep from sweep generator. The DC type horizontal positioning permits wide range of positioning to examine any part of trace even with full horizontal gain. The Heath patented recurrent type sweep circuit has automatic lock-in circuit using self-limiting synchronizing cathode follower.