FIELD: ultraviolet radiation control.
SUBSTANCE: device has photo-element with filter, generator, counter, control block with timer and an indicator. Photo-element is connected to check connection circuit of generator and counter, connected to generator and control blocks by appropriate inputs, and by output to indicator.
EFFECT: higher efficiency.
4 cl, 2 dwg
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Authors
Dates
2005-01-27—Published
2002-08-20—Filed