| 摘要 |
A video display monitor operable at different horizontal deflection frequencies incorporates a circuit that produces an electron gun control grid potential that compensates for screen grid potential changes due to changes in operating frequency. A sawtooth signal is generated that has a peak to peak amplitude determined in response to the deflection frequency. The sawtooth signal is peak detected to produce a direct voltage, for the control grid, that varies in response to the horizontal deflection frequency. |
