KOPPLINGSANORDNING FOR STYRNING AV ENERGIUPPTAGNINGEN HOS EN MED TYRISTORER FORSEDD HORISONTAL AVLENKNINGSANORDNING

摘要

A thyratron-like gating device governs the current supplied to an inductance in energy-exchanging relation with the storage capacitor in a reactive horizontal sweep circuit. The gating device is triggered by a control pulse that is delayed with respect to the start of the flyback portion of the sweep cycle by an amount proportional to the magnitude of the voltage stored on the capacitor at the start of flyback. The control pulse is generated upon the coincidence of a first saw-tooth voltage triggered at the start of flyback and a second voltage derived from the magnitude of the pulse generated in a secondary winding of the deflection transformer at the start of flyback. Suitable gain control facilities limit the magnitude of the second voltage to a value that assures generation of the control pulse within the flyback interval.