Innosys, Inc.

Other

William B Sackett

Laurence P Sadwick

Michael D Brady

A digital dimmable driver system includes an alternating current input, a dimmer operable to perform a phase cut operation on a waveform from the alternating current input, a driver circuit operable to switch from a dimming mode to a universal voltage input mode based on a phase angle of the dimmer, and a power output operable to power a light.

Digital dimmable driver

Various apparatuses and methods for starting a thyristor are disclosed herein. For example, some embodiments provide an apparatus for controlling power to a load. The apparatus includes a thyristor, a secondary load switchably connected to an output of the thyristor, and a sensor connected to the secondary load. The sensor is adapted to connect the secondary load to the thyristor when the output of the thyristor falls below a predetermined level.

Low current thyristor-based dimming

Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a controller connected to the power supply and the at least one LED in each of a plurality of colors. The controller is adapted to adjust current levels to the at least one LED in each of a plurality of colors to produce a blended color. The controller is also adapted to adjustably vary an intensity of the blended color without substantially changing the blended color.

LED lamp with remote control

Various embodiments of a dimmable power supply are disclosed herein. For example, some embodiments provide a dimmable power supply including an input current path, a switch in the input current path, an energy storage device connected to the input current path, a load output connected to the energy storage device, and a timer-based variable pulse generator connected to a control input of the switch. The timer-based variable pulse generator is adapted to generate a stream of pulses having a variable on-time and off-time. The dimmable power supply is adapted to vary the on-time and off-time to control a current at the load output.

Dimmable timer-based LED power supply

Various embodiments of an LED dimming driver are disclosed herein. In some embodiments, an apparatus for dimmably driving at least one load includes a power supply having a voltage output, a controller having at least one current setpoint output, and at least one driver channel circuit connected to the voltage output of the power supply and to at least one of the at least one current setpoint outputs, the at least one driver channel circuit having a load output.

LED dimming driver

Various embodiments of a fluorescent lamp power supply are disclosed herein. In one embodiment, a power supply includes a power input connected to a pulse generator. The power supply also includes a filter connected to a variable pulse width output on the pulse generator and to the power input. The filter is adapted to substantially block at least one harmonic frequency component of the variable pulse width output and to substantially pass a fundamental frequency component of the variable pulse width output. The power supply also includes a power output connected to the filter, wherein an amplitude at the power output is related to the pulse width at the variable pulse width output.

Fluorescent lamp power supply

Various embodiments of a universal dimmer are disclosed. In one embodiment of a universal dimmer, a power limiting switch is connected to an input voltage. An output driver in the universal dimmer includes a power input and a load path, with the power input being connected to the input voltage. A variable pulse generator includes a control input and a pulse output, with the control input connected to a control input of the power limiting switch. The pulse output is connected to a control input of the power limiting switch. The variable pulse generator is adapted to effectively vary a duty cycle at the pulse output. The universal dimmer also includes a load current detector having an input and an output. The load current detector input is connected to the output driver load path. The load current detector output is connected to the variable pulse generator control input. The variable pulse generator and the load current detector are adapted to limit the effective duty cycle when a load current reaches a maximum current limit to substantially prevent the load current from exceeding the maximum current limit.

Growing community of inventors

Sandy, UT, United States of America

William B Sackett