H05B41/18

LED driver with auxiliary power output
09603208 · 2017-03-21 · ·

An LED driver has a primary side regulation with at least one input connected to the AC power line, and at least two outputs. At least one output is for driving LEDs and at least one output is for providing auxiliary power for associated circuits. The driver is constructed using the flyback principle, having at least one flyback transformer which has at least one primary winding connected to a flyback switching transistor. At least one principal output winding is connected to the LED load, and at least one feedback winding is connected to a control chip. At least one auxiliary winding drives the auxiliary power output. The auxiliary winding has a coupling coefficient to said feedback winding which is greater than the coupling coefficient between the principal output winding and the feedback winding.

Starting device for discharge lamps
09578725 · 2017-02-21 · ·

A starting device for discharge lamps including an ignitor and a ferromagnetic ballast, composed of a toroidal core, equipped with at least an air gap, and an electric coil wound around the toroidal core.

Starting device for discharge lamps
09578725 · 2017-02-21 · ·

A starting device for discharge lamps including an ignitor and a ferromagnetic ballast, composed of a toroidal core, equipped with at least an air gap, and an electric coil wound around the toroidal core.

Easy-install home automation light switch

A light switch plate includes a wireless transmitter for transmitting control signals to a smart light assembly. The light switch plate is placed over a conventional light switch and prevents a user from further manipulating the conventional light switch. The light switch plate includes a further switch which a user can manipulate to cause the transmitter to transmit control signals to turn on or turn off a light of the smart light assembly.