Improvements in or relating to circuit arrangements for the production of periodical potential pulses

Abstract

Abstract 488,842. Valve generating circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 10, 1938, No. 4237. Convention date, Feb. 13, 1937. [Class 40 (v)] [Also in Group XXXV] To prolong the impulses produced when a condenser 3 which is charged through a resistance 4, is discharged through a grid-controlled vapour-filled or gas-filled valve 1, a resistance 5 having a parallel condenser 6 is connected as shown. The condenser 6, which charges when the condenser 3 is discharging and discharges through resistance 5 when the valve 1 no longer passes current, prolongs the pulses taken from resistance 5 via movable contact 13. The frequency of the pulses is the same as or a multiple of that supplied to the grid circuit of the valve at 15. An embodiment using an alternating current supply at 2 is also described in the Specification.

Inventors

No inventors recorded.

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