Power supply for flash lamp

Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply

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315205, 315208, 315239, 315240, 320 1, 323 25, H05B 4134

Patent

active

041941438

ABSTRACT:
A power circuit for a discharge lamp, in particular a flash lamp serving as light source in an optical analysis apparatus which comprises an electric power source outputting a d.c. voltage and capable of reabsorbing electrical energy, which also comprises an energy transferring circuit inserted between the electric power source and a first capacitor connected to the lamp, the capacitor being charged via the energy transferring circuit and adapted to store the energy required for each discharge across the lamp, the energy transferring circuit comprising a first current path comprising the primary winding of an autotransformer and adapted to transfer current from the electric power source to the first capacitor until the voltage across it reaches a predetermined value, and a second current path comprising a second capacitor for storing part of the surplus or non-used energy stored in the autotransformer during the charging of the first capacitor. To reduce interalia the duration of the charging cycle of the first capacitor, the energy transferring circuit further comprises a third current path comprising the secondary winding of the autotransformer, which path serves for returning the unused energy stored in the autotransformer and in the second capacitor to the electric power source.

REFERENCES:
patent: 3127573 (1964-03-01), Weil
patent: 3588667 (1971-06-01), Duff et al.
patent: 3614586 (1971-10-01), King
patent: 3749976 (1973-07-01), Colyn
patent: 3963945 (1976-06-01), Colyn

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