| 摘要 |
A pulse applied to DC restoring networks associated with the grid electrodes of a color kinescope for biasing the same is maintained at a relatively constant amplitude. The constant amplitude is provided for by means of a unidirectional current-conducting device coupled to the output electrode of a blanking amplifier, and used to control the pulse amplitude at the output electrode as further applied to the DC restorers. The unidirectional device limits the voltage excursions of the pulse when the device is caused to conduct, due to the bias impressed thereon. The action serves to regulate the bias voltage applied to the kinescope grids via the DC restoring networks independent of amplitude variations in the pulse as applied to the input electrode of the blanking amplifier and amplitude variations due to tolerances and aging of the blanking amplifier associated components. |
