JPS6381563U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a high voltage generating circuit according to an embodiment of this invention, and FIG. 2 is a block diagram of a conventional high voltage generating circuit. 1 is an input terminal for the frequency that drives the high voltage generation circuit, 2 is a switching transistor, 3 is a damper diode, 4 is a switch that switches the resonance capacitor, 5 and 6 are the resonance capacitors, and 7 is a switch that switches the terminal of the flyback transformer. , 8 is a flyback transformer,
9 is a power input terminal, 10 is a high voltage output terminal, 11 is a flip-flop, and 12 is a switch for selecting 1/2 of the input frequency. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) In a flyback transformer-type cathode ray tube high voltage generation circuit equipped with a switching circuit that switches in synchronization with the horizontal frequency, in the case of a standard scanning line number method, high scanning In the case of the number of lines method, the switching circuit is driven at 1/2 of the horizontal frequency.
A television receiver that displays scanning images. (2) A television according to claim 1 of the utility model registration claim, characterized in that a frequency dividing circuit is provided between the input terminal and the switching circuit, and switching is performed by the frequency dividing circuit output in the case of a high scanning line system. Jiyoung receiver.