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Machine translation
1. (WO1979000449) VARIABLE INTENSITY CONTROL APPARATUS FOR OPERATING A GAS DISCHARGE LAMP
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000449    International Application No.:    PCT/US1978/000254
Publication Date: 26.07.1979 International Filing Date: 28.12.1978
IPC:
H05B 41/04 (2006.01), H05B 41/28 (2006.01), H05B 41/288 (2006.01)
Applicants:
Inventors:
Priority Data:
865209 28.12.1977 US
Title (EN) VARIABLE INTENSITY CONTROL APPARATUS FOR OPERATING A GAS DISCHARGE LAMP
(FR) ROULEAU ECRASEUR POUR METIER A CARDER
Abstract: front page image
(EN)In a gas discharge lamp, when the current through the inductor (17) has increased to a point where the voltage drop across the resistor (15) exceeds the voltage of the reference source (23, 24), the comparator amplifier (20) triggers the monostabile multivibrator (18) causing the solid state switching device (14) to be turned off. This acts to collapse the magnetic field in the inductor (17) thereby causing a large flyback voltage to appear across the lamp (11) sufficient to light the lamp. At the end of the predetermined time period of the low output state of the monostabile multivibrator (18), its output turns the solid state switching device (14) on, allowing current to flow from the power supply (16) through the inductor (17) and the lamp (11), thereby maintaining the lamp in the lit state and increasing the magnetic field in the inductor (17). The current flow through the lamp, when the solid state switching device (14) is on, is in the opposite direction from the current flowing through the lamp when the solid state switching device is off.
(FR)Rouleau ecraseur pour metier a carder comprenant deux rouleaux (6) et (10) travaillant ensemble, par exemple pour l"ecrasement des graines et des particules d"enveloppes dans les metiers a carder. Au moins un des deux rouleaux (6) et (10) est creux, le manchon cylindrique (19) est pressurise interieurement et se deforme radialement. Par cette deformation qui est contre-carree par un second rouleau, la pression d"ecrasement est creee entre les rouleaux (6 et 10). Le manchon (19) peut, entre autres solutions, etre d"epaisseur variable le long de sa longueur de telle maniere que la deformation radiale puisse etre adaptee le long des rouleaux (6 et 10).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)