JPS6181268U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a diagram for explaining its operation. 1a, 1b, 1c are color signal output circuits, 2a, 2
b, 2c are cathode electrodes, 3a, 3b, 3c are amplification transistors, 4 is a video signal output circuit, 6 is a first circuit, and 9 is a second circuit.

Claims (1)

[Claims for Utility Model Registration] (1) An amplification transistor is provided between the color signal output circuit and the cathode electrode of the CRT, a video signal output circuit is connected to the emitter (or collector) of the amplification transistor, and the amplification A color television receiver comprising a cathode electrode of a CRT and a cathode power supply commonly connected to the collector (or emitter) of a transistor, the first circuit generating a trigger signal only for a predetermined period of time from when the power is turned on; a second circuit connected to the base of the amplification transistor and generating a noise removal signal that makes the amplification transistor non-conductive in response to the trigger signal, the noise removal signal of the second circuit causing the amplification transistor to become non-conductive. 1. A CRT screen noise removal circuit when power is turned on, characterized in that the cathode electrode is supplied as a cathode cut-off voltage to the cathode electrode of the CRT when the cathode electrode is non-conductive. (2) The circuit according to claim 1, wherein the first circuit is a differentiating circuit.