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Lamp housing for motion picture film projector
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Endless loop transport and storage system
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Endless loop transport and storage system
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Endless loop transport and storage system
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Endless loop transport and storage system
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Controller for battery charger
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Magnetic tape degausser and method of erasing magnetic recording tape
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Connector for battery pack
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Method and circuit for determining battery capacity
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Film tensioning device
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Cooling system for xenon arc lamps
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Integrated rejuvenable energy system and method
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Battery charger with control circuit for cyclical charge and discharge as a function of battery voltage during discharge
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Illumination means
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Power supply impedance control with positive slope
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D.c. power supply with fast initial current buildup and limits on maximum and minimum current during starting
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Regulated power supply
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Apparatus for testing storage batteries
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Battery charging system
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Rectifier control system
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