| 摘要 |
PURPOSE: To enable the execution of a smooth resonance flyback in an erasure period when a deflection beam is returned to a start point by accepting the current flowing via a flyback switching means from an electric power stage means in a deflecting yoke so that the current is used for a magnetic deflection CRT. CONSTITUTION: The system used for the magnetic deflection cathode ray tube CRT includes the deflection yoke driven by an amplifier system 12 to which a prescribed sweep signal is inputted. The electric power stage means 14 is coupled to the amplifier means 12 to constitute a gain-limiting current source. The first input signal is amplified by the system and applies the current output within the amplified and satd. region range. The flyback switching means 16 receives the current from the electric power stage means 14. The current limiting current source passes the current signal through the flyback switching means 16 and supplies the signal to the deflection yoke. As a result, the sweep signal is amplified with high resolution in the active sweep period and the smooth resonance flyback is executed in the erasure period when the deflection beam is returned to the start point. |
