Abstract: A circuit that indicates an impedance of a battery dielectric includes a signal generator module that flows a first current from a ground to a first terminal of a battery. A sensor circuit generates a signal based on a second current that flows from a second terminal of the battery through a resistance to ground. The second current includes the first current and a third current that flows to ground via an impedance presented by a battery dielectric housing. A signal conversion module generates an output signal based on the signal. The output signal represents the impedance presented by the battery dielectric housing.

Abstract: A circuit that indicates an impedance of a battery dielectric includes a signal generator module that flows a first current from a ground to a first terminal of a battery. A sensor circuit generates a signal based on a second current that flows from a second terminal of the battery through a resistance to ground. The second current includes the first current and a third current that flows to ground via an impedance presented by a battery dielectric housing. A signal conversion module generates an output signal based on the signal. The output signal represents the impedance presented by the battery dielectric housing.

Abstract: A new lighting control utilizes common infrared remote controllers such as the “universal remote controller” available for controlling TV, VCR and other audio/video components and devices in home use. The new infrared receiver controllers incorporate receivers that recognize many control protocols, have the ability to learn and respond to one protocol field-assigned to a particular control device and to simultaneously ignore messages directed to other control system components. A particular receiver is able to accept different communication protocols generated under audio/video maker-specific presets. Most audio/video makers have a proprietary code format which differs from others in carrier frequency used, code type (bi-phase or pulse distance modulation), length of message, timing of data bits and start sequence, repetition format and rate and number of bits/message.

Abstract: A fluorescent lamp lighting arrangement controlled by both a motion detector and a light sensing detector operable when said motion detector senses motion.

Abstract: A fluorescent lighting arrangement including a lamp controller for controlling the light intensity of fluorescent lamps in response to a motion detecting arrangement which receives its operating voltage from the lamp controller.

Abstract: A method for controlling the luminescence of a fluorescent lamp in which a light sensor operates in response to light other than that from the fluorescent lamp striking it to increase the luminescence of the lamp.

Abstract: A control circuit for a dimmer which receives all of its operating power through the control terminals from the dimmer of the fluorescent lamp to which said dimmer is connected.

Abstract: A method of controlling fluorescent lamps in accordance with any selected one of a family of curves plotting sensed natural and artificial light against lamp output, each curve having a steep portion and a more moderate portion and a circuit for providing such control.