Electric lamp and discharge devices: systems – Plural load device systems – Sequential starting
Patent
1979-04-02
1980-08-05
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Plural load device systems
Sequential starting
315200A, 315241R, 340 26, 340310R, 340331, H05B 4134, G08G 500
Patent
active
042164133
ABSTRACT:
A control system which is organized such that a power distribution line only is required for connecting the control unit and the flash lamps and such that the sequencing control, the energy level control of the light bursts and the positive monitoring of the lamp operation are centralized in the control unit. The usual high voltage storage capacitors and the related charge and protection circuitries are consequently needless in the triggering circuit associated with each flash lamp. The lamps are triggered by a burst of pulsed voltage waveforms which are applied on the power distribution line in synchronism with positive half cycles of the supply voltage at the control unit, each pulsed waveform being associated to the control of a respective flash lamp.
REFERENCES:
patent: 3488558 (1970-01-01), Grafton
patent: 3531765 (1970-09-01), Christianson et al.
patent: 3873962 (1975-03-01), Eggers et al.
LaRoche Eugene R.
Societe Anonyme des Etablissements Adrien de Backer
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