H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/109
H04N 5/14 (2006.01) H04N 9/64 (2006.01) H04N 5/44 (2006.01)
Patent
CA 1150395
27-11-1979 1 PHN 9444 ABSTRACT "Television picture display device". In a class-B output amplifier having an npn- transistor the collector of which controls a cathode of a picture display tube via oppositely conducting parts of a diode and an emitter follower, respectively, a signal corresponding with the beam current through the relevant cathode is obtained from the collector circuit of an npn- transistor whose base-emitter path is arranged in parallel with the diode. The signal corresponding with the beam current can be used for controlling a background current and for limiting a beam current, respectively.
351106
Hovens Paulus J.m.
Smeulers Wouter
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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