Abstract: An R-C relaxation oscillator having two comparators and a silicon controlled rectifier dissipates very low average power without resulting in frequency instabilities due to circuit propagation delays. A timing capacitor C.sub.T is charged through a timing resistor R.sub.T. The first comparator compares the voltage across the timing capacitor with an upper threshold voltage V.sub.TH. When the voltage across the timing capacitor crosses the upper threshold voltage, the comparator turns on the silicon controlled rectifier, which causes the capacitor to discharge the voltage that it has stored. The second comparator turns off the silicon controlled rectifier when the voltage across the timing capacitor falls below a lower threshold voltage V.sub.TL.

Abstract: A hollow container or carton for an article formed of a single blank which has been suitably shaped and provided with selected fold lines. The carton is provided with a bottom structure which may readily snap open to provide access to the carton. The uppermost edges of both the carton front panel and the rear panel define parabolic curves and the carton side panels include tabs having curved outer edge portions conforming to the uppermost edges of the front and rear panels for alignment therewith and securement thereto.