FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and can be used in lighting unit. Electric installation device (1) hidden wiring comprises control system to adjust desired brightness lighting installation (18), instrument insert (13) hidden wiring with load-carrying ring (14), mounted on body (16) of control unit, protective frame (17). Instrument insert (13) hidden wiring includes unit (2) connecting terminals for connection of phase wire (L) of AC circuit and load wire (L') fed to lighting installation (18). Lighting installation (18) on other side is connected with neutral wire (N) of AC circuit. Element (9) has control element (9) control for setting required brightness. Control system in form of high-frequency generator of pulse-width modulation, which through the LC-filter (3) is connected to unit (2) connecting terminals and is controlled by microcontroller (8). Element (9) for regulation of loads microcontroller (8), thus ensuring ratio of the pulse/pause length of high-frequency alternating voltage network timing.
EFFECT: high quality of control of brightness and reduced power losses.
5 cl, 5 dwg
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