LIGHTING CONTROL UNIT Russian patent published in 2003 - IPC

FIELD: public utilities of apartment houses and industrial buildings. SUBSTANCE: control unit designed for automatic control of electrical quantities of miscellaneous lighting fixtures has contactless switching devices built around triacs and floor lighting switches incorporating provision for stepless on/off control of voltage applied to lighting lamps with its amplitude limited to minimal admissible value. Its photosensor is supplied with pulsed power and functions to ensure high-precision operation within specified temperature range without malfunctions in case of short-time lighting or photosensor dimming. Control unit incorporates means preventing unauthorized connection of tenants to lighting system of non-residential rooms. EFFECT: enhanced reliability, service life, and safety of device; reduced power requirement. 2 cl, 1 dwg