Electric lamp and discharge devices: systems – Current and/or voltage regulation – Plural load device regulation
Patent
1990-08-14
1992-01-21
Laroche, Eugene R.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Plural load device regulation
315134, 315153, 315370, 315322, 382 7, H05B 3702
Patent
active
050830635
ABSTRACT:
Apparatus for controlling operation of a number of radiation generator assemblies comprises a store for storing calibration values for respective assemblies, respective switches, a digital to analogue converter (D/A) and control means. The switches are coupled between the radiation generator assemblies and D/A. The control means selectively addresses the store and controls the switches such that when a switch is closed a corresponding calibration value is supplied to the D/A to energize the generator assembly. Such apparatus is typically for use in monitoring of passage of sheets such as in banknote sorting.
REFERENCES:
patent: 3763394 (1973-10-01), Blanchard
IBM Technical Disclosure Bulletin, "Adjustment of LED Current in Optical, Document Sensor", vol. 30, No. 7, Dec. 1987, pp. 130-131.
De La Rue Systems Limited
Dinh Tan
LaRoche Eugene R.
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