| 摘要 |
The circuit is provided for adjusting the focus in the optimization state by controlling the focus voltage for the vertical and horizontal synchronizer, and includes a vertical deflection amplifier amplifying the vertical deflection signal providing in the vertical deflection coil of a picture tube, a horizontal deflection amplifying part amplifying the horizontal deflection signal providing in the horizontal deflection coil of a picture tube, a mixing part providing the vertical deflection signal and the horizontal deflection signal into the coil of a grounded transformer, a control signal generator outputting the switching control signal by amplifying the output signal of the mixing part, a focus voltage control part adjusting the focus voltage by the control signal.
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