Abstract: A non-polarized laser trim chip stub in accordance with the invention includes a trimmable top conductor (12) capable of being trimmed to alter the electrical properties of the chip stub, a bottom conductor (58) having at least a first conductive portion (68) and a second conductive portion (72), a dielectric (44) separating said top conductor from said bottom conductor, and conductive passages (42) electrically connecting the top conductor or a portion thereof to the bottom conductor or a portion thereof. In alternate embodiments, the non-polarized laser trim chip stub's top conductor (102) is separated into a trimmable stub portion (110) and an end portion (112), and the bottom conductor (150) may be separated into three conductive portions (160, 162 and 164) to allow for the middle portion (162) to be used as a heat sink to aid in the dissipation of heat generated during high power applications.

Abstract: There is provided an electrical outlet apparatus including a plate having a pair of openings therein which are adapted to be placed in register with a pair of adjacent wall mounted electrical receptacles. A first land surrounds the first opening and a second land surrounds the second opening. Each land includes a well therethrough which is aligned with one of the openings in the plate. The lands are dimensioned to receive a standard, preferably three-prong, plug with minimal clearance for the plug. The thickness of each land is such that the plug cannot be energized unless the exposed contacts are below the top surface of the land. One of the lands is removable from the plate so that a larger, nonstandard plug may be inserted through one of the openings without having to remove the entire apparatus from the wall; A latchable slidable cover is received over each land.

Abstract: The present invention includes an apparatus and a method for transceiver self-diagnostic testing in a communication system. A feedback unit (228, 326) is utilized that allows performance of a loopback test independent of a transmit frequency to receive frequency difference without undue proliferation of circuitry.