FIELD: engineering.
SUBSTANCE: device has block for connection to AC current source, converter for forming a DC current source and light diode group, consisting of multiple light diodes. Light diode group is provided with block for prior telling of service duration, including counter for measuring power-on period on basis of frequency of AC current source, integration device for power feeding, which is measured by counter, and for recording integrated value in energy-independent memory device and device for controlling power feeding mode for controlling light level of diodes in different modes, including normal lighting modes. Prior messaging block is meant for integration of power-on period for output of forwarding message, indicating approach of service duration end.
EFFECT: broader functional capabilities.
10 cl, 2 dwg
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Authors
Dates
2005-03-10—Published
2000-11-03—Filed