| 摘要 |
PURPOSE:To make it possible to obtain a satisfactory convergence quality by a simple constitution, by correcting mis-convergence appearing on the picture end by superposing a part of a parabola wave on a parabola wave and a saw tooth wave. CONSTITUTION:When a horizontal pulse is applied to the input terminal 1, the saw tooth wave generating circuit 2 receives this signal and generates a saw tooth wave, and provides it to the parabola wave generating circuit 3 consisting of a mirror integrated circuit, etc. And an output of the circuit 3 is transmitted to the clip circuit 4, and parabola wave which has been clipped is fetched from the circuit 4, and it is provided to the output circuit 5. To this output circuit 5 is connected a convergence coil 6, and into this coil 6 flows a current in which a saw tooth wave of an output of the circuit 2, a parabola wave of an output of the circuit 3, and a clip of an output of the circuit 4 have been superposed. Thus, it is possible to obtain a satisfactory convergence quality by correcting a mis-convergence appearing on the picture end, by a simple constitution. |
