Abstract: A recessed downlighting fixture mountable in a ceiling between spaced joists or carried by T-bars and the like to direct light downwardly into an environmental space. The invention particularly takes the form of a pan assembly preferably formed of a thermoplastic material of a rigidity sufficient to support standard cans or reflector housings and associated lamping, electrical wiring inter alia. A junction box preferably formed of the same thermoplastic material is mounted to the pan assembly, access being gained to the interior of the box at opposite sides the box through positive latching doors which remain open to facilitate wiring operations within the box. The thermoplastic pan mounts adjustable bar hangers for rough-in of the downlighting assembly.

Abstract: Battery charging circuits configured as a combination of current limited charging sources and a shunt regulating path to bypass current from a battery charging path through a low impedance path so that charge current can be regulated and terminated or controlled, the invention further includes combination of the circuits in emergency lighting systems utilizing conventional AC mains power in a non-emergency mode and DC battery power in an emergency mode, the battery being charged with regulation of charge current effected by said circuits when in the non-emergency mode. In the present circuits, current is by-passed from that portion of the circuit used for battery charging by provision of a low impedance alternate path through which current may also be supplied to non-emergency lamps, the alternate path supplanting prior art circuits which function by continuously turning a single path on and off for charge regulation.