Abstract: A gas discharge lamp power supply having a base, a pair of opposed side walls extending from the base, and opposed first and second end walls extending from the base between the opposed side walls. The first end wall has a sloped wall extending angularly between the side walls, and two input terminals are mounted on the sloped wall. In another embodiment, the power supply has a control with a nonvolatile memory for storing an error code in response to a detected fault condition, thereby permitting the error code to be displayed upon power being removed from and then, subsequently reapplied.

Abstract: A lamp fixture for mounting a high intensity discharge (HID) lamp. The lamp fixture integrates components needed to operate the HID lamp, including a lamp socket and a ballast, into a compact assembly covered by an enclosure. The fixture facilitates dissipation of heat from the lamp and ballast through a base mounting so that thermal insulation of the ballast transformed is not required, thereby reducing the weight of the device. The fixture may further include a diffuser mounted to the enclosure to distribute light from the HID lamp in a uniform manner. The fixture is particularly useful for mounting HID lamps within illuminated signs.

Abstract: An apparatus for rotationally adjusting a cam, that includes an adjustment pinion having a number of missing teeth that couple to an integral gear formed on a rotatable cam. The adjustment pinion is used to manually adjust the angular position of the rotatable cam relative to the rotatable cam's axis of rotation. When the missing teeth of the adjustment pinion disengage from the gear integral to the cam, rotation of the adjustment pinion ceases. The adjustment apparatus may be readily incorporated into a programmer/timer.