Abstract: Example embodiments include an apparatus with a buffer amplifier having an output node. A first switchable unidirectional current path is provided between the output node and a capacitor, the first path allowing current flow from the capacitor to the output node. A second switchable unidirectional current path is provided between the output node and the capacitor, the second path allowing current flow from the output node to the capacitor. Comparator circuitry is provided that operates to open the first path if the capacitor voltage is above an upper threshold and to open the second path if the capacitor voltage is below a lower threshold. The capacitor voltage may be read by an analog-to-digital converter.

Abstract: Example embodiments include a mounting system and method for a sensor node or other electrical or electronic device. An apparatus according to some embodiments includes a housing having a perimeter and a rear surface, a set of power plug prongs extending from the rear surface of the housing, and a bracket releasably engageable with the rear surface of the housing, the bracket having at least one flange that extends beyond the perimeter of the housing when the bracket is engaged with the rear surface. In some embodiments, at least one of the flanges includes a frangible region allowing for removal of at least a portion of the respective flange.

Abstract: Example embodiments include an apparatus with a buffer amplifier having an output node. A first switchable unidirectional current path is provided between the output node and a capacitor, the first path allowing current flow from the capacitor to the output node. A second switchable unidirectional current path is provided between the output node and the capacitor, the second path allowing current flow from the output node to the capacitor. Comparator circuitry is provided that operates to open the first path if the capacitor voltage is above an upper threshold and to open the second path if the capacitor voltage is below a lower threshold. The capacitor voltage may be read by an analog-to-digital converter.