| 摘要 |
PURPOSE: A circuit for modulating deflection current is provided to correct raster distortion to the deflection circuit by modulating the deflection current and generating modulated voltage from the output stage of the modulation amplifier. CONSTITUTION: A horizontal deflection circuit generates a horizontal deflection current(iy) in deflection winding(27) during a trace interval and during a retrace interval of a deflection cycle. A transistor(62) is responsive to a vertical rate parabola signal(VIN) and to a negative feedback signal(Ve) for producing a vertical rate parabolic modulation voltage at a collector of the transistor. A negative feedback network(R26) generates the feedback signal that is indicative of a current(ie) flowing in the transistor for increasing an output impedance at the collector of the transistor. An inductor(34) is coupled to the collector of the transistor.
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