An automatic kinescope beam current limiter in a television receiver comprises a sensing network for deriving a signal representative of average and peak beam current demand directly from the video signal cathode current of the kinescope, and a control circuit responsive to the derived signal. When excessive...http://www.google.com.au/patents/US4253121?utm_source=gb-gplus-sharePatent US4253121 - Plural sequential operating mode automatic kinescope beam current limiter
