| 摘要 |
<p>A hysteresis voltage switch is coupled between a direct current supply voltage and a source of deflection synchronizing waveforms. The source of deflection synchronizing waveforms is operable when the supply voltage reaches a minimum amplitude. The switch does not close to couple the deflection synchronizing waveform generator to the supply voltage, however, until the supply voltage is substantially in excess of the minimum amplitude. Cycling off and on of the deflection synchronizing waveform generator as a result of reduction in the supply voltage when the deflection output stages draw current from the supply is thereby prevented.</p> |
