HIGH FREQUENCY HORIZONTAL DEFLECTION AND HIGH VOLTAGE GENERATING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide the high frequency horizontal deflection circuit and the high voltage generating circuit in a horizontal deflection circuit where deterioration in the characteristic due to increase in loss resulting from a reduced inductance of a deflection coil and due to a decreased number of turns of the deflection coil is prevented. SOLUTION: First a 2nd resonance synchronization switching using a FET 21 is applied to a horizontal deflection circuit consisting of a deflection transformer 13 and a switching transistor(TR) 10 so as to make connection to maximize a voltage applied to a deflection york and timing adjustment of the synchronization switching is executed by using a deflection winding voltage to obtain a correction means required for deflection. Second, a primary winding of the deflection transformer and a primary winding of a high voltage transformer are operated under a loose coupling, a 3rd resonance switching circuit employing a FET is formed at a low voltage winding of the high voltage generating transformer and high voltage control is realized by changing a resonance voltage.