Abstract: The present teachings provide control systems and methods for monitoring the performance of an absorption refrigerator. The system includes a temperature sensor that senses the temperature of a generator of a cooling arrangement. The circuit may communicate with the sensor and turn off a heat source of the cooling unit if a sensed temperature condition of the generator exceeds a predetermined temperature condition.

Abstract: A stand for carrying a reel around which a linear product such as wire may be wound. The stand comprises a base and a support member for engaging the reel in a manner that permits the reel to rotate so that the linear product may be unwound therefrom or wound thereon. The stand comprises a line guide having a guide head designed to guide the linear product during the winding or unwinding process. The guide head is carried on a guide arm which is configured to be mounted on the stand. Optionally, the line guide and stand are configured to provide a position on the stand where the line guide may be stowed when not in use. Preferably, the guide arm is flexible to permit the desired positioning of the guide head and, optionally, to facilitate stowage.

Abstract: A wire reel stand that is capable of supporting multiple wire reels in its open position and is easily collapsed for storage. The stand includes a pair of "U"-shaped frame supports, with a central wire reel support rod disposed between the open ends of the frame supports. A pair of angle brackets, attached to one of the frame supports, is utilized to maintain the stand in a fixed, open position. Side bars are releasably attached to each frame member and, advantageously, remain attached to the wire reel stand in its closed configuration.

Abstract: Disclosed is an antenna element that is defined by a substantially Y-shaped slot (22) formed in the broad face (12) of a section of dielectrically-filled waveguide (10). Various design parameters including leg length, leg width and angle formed between the legs permit the antenna element to be configured for circularly polarized radiation of a controlled portion of the electromagnetic energy that propagates along the waveguide.