Abstract: The present invention relates to compact portable electronic scale having a scale lid mechanism which pivots the lid of the scale in a predetermined controlled manner between a closed position, where the lid overlays the weighing platform, and an open position, where the lid is pivoted towards the rear of the scale. The pivot mechanism positions the lid such that neither the lid nor the hinge interferes with weighing of oversized objects. Further, the scale includes a removable weighing tray to assist in weighing loose or oversized objects.

Abstract: Circuit and method for controlling circuitry in a power converter device during a soft-start process is provided. Synchronous rectifier control circuitry is adapted to gradually apply a gate drive signal derived from the main switch of the power converter device to a freewheeling synchronous rectifier of the switching circuitry during the soft-start process. The control circuitry gradually releases the amplitude or the pulse-width of the gate drive signal to the freewheeling synchronous rectifier to avoid a large duty ratio in the synchronous rectifier during start-up so that a negative current does not build up in the output inductor.

Abstract: A safety circuit is described that monitors a number of sensors for intrusion of objects or people into the workspace of a robot and controls the drive power to the motion control system via an emergency-stop circuit. The system monitors the motion control system and models it as just another sensor to ensure that it is working properly. In the event that there is intrusion, the safety circuit assigns a degree of intrusion (e.g., precautionary or serious). For serious intrusions, the safety circuit kills drive power thereby preventing additional motion of the robot. Killing drive power (de-energizing the emergency-stop circuit) requires a qualified operator to restart for further operation. For precautionary intrusions, the safety circuit takes control of the motion control system by disabling the power stages of motion control amplifiers but retaining drive power there. This inhibits further motion. The safety circuit keeps the amplifiers inhibited for a period to permit the intrusion time to clear.

Abstract: A power distribution system is provided including current sharing circuitry, current sensing and over-current protection. The system includes a plurality of power converter modules each having a current sharing signal terminal on an input side and power output terminals on an output side, the corresponding power output terminals of the several modules being connected together and adapted to power a common load; an interconnecting signal bus coupled across the current sharing signal terminals on the input side; a plurality of feedback circuits, each of which is associated with one of said modules, each feedback circuit including a comparator (error amplifier) for comparing a feedback voltage on the output side with a reference voltage to provide an error signal to the input side; the error signal conditioned to provide a current command signal to said signal bus, wherein the signal bus provides a common current command signal to drive the power converter modules.

Abstract: The present invention comprises a convertible fishing reel which has a unique design to allow for a more efficient line casting and line retrieval. To accomplish this, a preferred embodiment of the invention comprises two separate components, a main-body chassis and a spool chassis. The spool chassis is connected to at least one support arm of the main-body chassis. The connection is such that the spool chassis can be rotated 90 degrees within the spool chassis, to be perpendicular to the main-body chassis in line casting position and parallel to the main-body chassis in a line retrieval position.

Abstract: A device for digging and harvesting seed pods from plant roots, in particular, a device for digging and harvesting peanuts, where after the peanut plants are removed from the ground, the peanuts are removed from the peanut plant root system. The device comprises a harvesting head which includes three essential components for performing the requisite function, namely a shaft, a pair of circular hubs and at least one set of tines. A self-cleaning member is also provided.