Abstract: A back-up emergency power unit called the Little Power House Emergency Power System. The device provides unique features and combinations of features that are specifically used to charge a battery, retain power, then invert the stored power for use in the event of a power failure. The device 31 is comprised of a three way power switch 32 with a neutral {acute over (Ø)}; an outlet 90; an inverter 34; a battery 40; a three way charge switch 80; a float charge device 36; a transformer 55; and electrical means to interconnect all the components. The entire device is encased in a compact configuration.

Abstract: A contact probe including a length of wire with head, coil and tail sections. The head and tail sections may be lengthened and offset from the longitudinal axis of the coil section to allow the probes to be densely packed in a substrate material. Two probes may be interleaved to provide improved electrical performance of the probe.

Abstract: A gold plating process is described in which gold concentration is monitored by a radioactive excitation procedure. This procedure for measuring gold concentration requires no chemical manipulation and yields immediate results. The procedure can be adapted to continuous concentration measurement for use in automatic control of gold concentration in a gold plating procedure.