| 摘要 |
A horizontal deflection circuit of a video display includes a first retrace capacitance and a second retrace capacitance. A deflection winding is coupled to the first and second retrace capacitances to form a resonant circuit, during retrace. A first switching transistor is coupled to the first retrace capacitance for generating a resonant, first retrace pulse voltage in the resonant circuit. In a first embodiment of the invention, a second switching transistor is responsive to the first retrace pulse voltage and coupled to the second retrace capacitance for controlling the second switching transistor in accordance with the first retrace pulse voltage. A second retrace pulse voltage is generated in the second retrace capacitance in a manner to provide for capacitance transformation. In a second embodiment of the invention, a second switching transistor is coupled to the second retrace capacitance for generating a second retrace pulse voltage in the second retrace capacitance in a manner to provide for capacitance transformation. A modulator is used for modulating a deflection current in the deflection winding without substantially varying a phase difference between said first and second retrace pulse voltages to provide for East-West raster distortion correction.
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