Abstract: The present invention relates to and is limited by a multi-segmented electroluminescent lamp with lamp segments that are turned on at or near a AC current zero crossing. The electroluminescent lamp is also powered by an inverter.

Abstract: A power supply periodically draws power from a DC soure. The power supply includes an electroluminescent lamp and an inverter used to convert the DC into a sinusoidal voltage that is applied to the lamp.

Abstract: An electrical outlet wiring analyzer includes generator circuitry for periodically providing an alternating current pulse of one cycle at a frequency of an alternating current voltage supplied by an electrical outlet having a plurality of conductors. The wiring analyzer also includes connecting circuitry for electrically applying the alternating current pulse to at least one of the conductors and circuitry for determining an impedance of each of the conductors to which the alternating current pulse is applied. Another embodiment of the electrical outlet wiring analyzer includes pulser means for periodically providing a current pulse of one-half cycle at a frequency of an alternating current voltage supplied by an electrical outlet having a plurality of conductors.

Abstract: A fluorescent lamp control circuit includes a dimmer and a sensor. The dimmer is electrically connected in parallel with the fluorescent lamp. The sensor is electrically connected in parallel with the dimmer and lamp. The dimmer adjustably controls the brightness of the lamp when an operating voltage is applied to the lamp. The sensor electrically disables the dimmer when a starting voltage is applied to the lamp and electrically enables the dimmer when an operating voltage is applied to the lamp. The sensor includes a voltage controlled switch, a voltage regulator, a direct current power supply, and a voltage controlled trigger. An output of the voltage regulator is electrically connected to an input of the voltage controlled switch. The voltage controlled trigger is electrically connected between an output of the direct current voltage supply and an input of the voltage regulator. The dimmer includes a current controlled switch, a variable phase-shift (RC) network, and a voltage controlled switch.

Abstract: A motion sensor assembly has a housing with an opening therein, an infrared detector, a lens which may be of the Fresnel type, a holder, a circuit, and a transformerless direct current power supply that provides power to the circuit and detector. The housing has an interior space bounded by at least one wall. The opening is formed in the wall. The holder receives and secures both the lens and the detector so that the lens focuses a field of view on the detector. The holder also orients the detector and lens so as to reduce internal reflections between the lens and detector. The holder further mounts both the lens and the detector adjacent the opening in the wall. A radiation permeable covering disposed in the opening conceals the elements of the assembly within the interior space of the housing. In one embodiment, the radiation permeable covering includes louvers.

Abstract: A power supply for an electroluminescent lamp. The power supply includes an inverter circuit for conveying a DC voltage into a 2000 Hz sinusoidal voltage. The lamp is capacitive in its nature and changes its capacitive value over extended use which adjusts the output frequency of the inverter. A sensor and timers are included which in combination flash the lamp in a predetermined pattern when motion is detected by the sensor.