AC Current detection circuit for a rotor driving supply source of a rotating anode X-ray tube

摘要

An AC current detection circuit is intended to detect whether an AC induction current for the rotor of the rotating anode X-ray tube flows or not. A current transformer is employed in the rotor supply circuit to generate a lower voltage at its output circuit by utilizing its magnetic-electric conversion effect. A transistor will switch on-off by receiving the generated voltage and produce a series of output pulse signals. A retriggerable monostable multivibrator will detect a missing pulse from the output pulse signals, which indicates a failure of the rotor supply operation.