Varon Lighting, Inc.

James E Hudson

Thomas J Mayer

This invention relates to a limited range low voltage testing, regulating, and indicating device comprising a detector and low voltage measurer of magnitude in a switch-regulated power supply circuit wherein indicator LEDs are operated directly from a power supply wherein continually increasing current draw provided by shunt switching operates to cause the first display LEDs to 'fade' in an overlapping pattern of activation, in and out with slight voltage changes. Increased voltage causes a second LED to turn on. Further increased voltage causes the second LED to turn off and a third LED to turn on. Shunt and series connected voltage regulators selectively exert control over the LEDs.

Low voltage testing and illuminating device

The invented voltage regulator is a solid state low voltage regulator for quartz halogen or low voltage incandescent lamps and quartz halogen or low voltage incandescent lamp or LED array circuits wherein the volt regulator reduces a conventional mains power line source of, for example, a 115 volt AC to 480 V AC power source, to within a range of from 11.0 volts to 12.5 volts, preferably 11.6 volts, wherein the lamps, and LED arrays have consistent color, consistent light output, the lamp filaments and LED arrays are exposed to soft start operating currents and lamp and array life can be increased. The voltage regulator utilizes an AC rectifier circuit to provide a pulsing DC voltage, a DC voltage sensing circuit, a soft start oscillator circuit, an internal DC voltage oscillator reference circuit and an AC power line control circuit.

Voltage regulator for line powered linear and switching power supply

The instant invention relates to a solid state low voltage power supply controller which reduces a conventional 120 volt AC power source to 12 volt pulsating DC for the purpose of operating a single &ldquo;point of use&rdquo; light source wherein the low voltage power supply is in proximate location to the light source. A pulse width modulator integrated circuit operating in conjunction with a field effect transistor induces energy in the secondary of a step-down transformer to provide a reduced pulsating DC current to a lamp load. A feedback voltage from the secondary winding of the stepdown transformer operates to set the gain of internal circuitry of the integrated circuitry to provide a predetermined constant pulsating DC voltage and a predetermined limited range of power wattage. A feedback voltage operates to reduce current drawn by overcurrent demands on the primary of the transformer.

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Arlington Heights, IL, United States of America

James E Hudson