Abstract: A voltage threshold circuit for the power factor correction stage of a power conversion system is provide. The circuit features a voltage threshold circuit with a comparator for (i) comparing a predetermined threshold voltage to the output voltage of a power factor correction stage of a power conditioner and (ii) outputting a signal if the output voltage is at least equal to the predetermined threshold voltage. The presence of the signal decreases the predetermined threshold voltage, thereby effectively changing the output voltage above which the comparator continues to output the signal.

Abstract: A fountain device selectively produces either a spray or a stream of water when used with a hose. The device includes a hollow body portion which has a water inlet formed at one end thereof. The body portion includes a water exit surface formed with both a plurality of small water exit ports and a large water exit port therein. A flow selecting valve is provided which has three states: an off state in which no water flows through the body portion, a spray producing state in which water flows through the body portion and exits therefrom through the plurality of small water exit ports, and a stream producing state in which water flows through the body portion and exits therefrom through the large water exit port. The flow selecting valve is positioned downstream of said water inlet and upstream of said water exit ports.