Abstract: A flagpole rotation device comprised of an upper collar having two U-shaped portions. The two U-shaped portions are adapted for securement around a flag pole. The two U-shaped portions are tightly secured around the flagpole. The device contains a rotator portion having two U-shaped portions. The two U-shaped portions have inner nylon surfaces. The two U-shaped portions are adapted for securement around the flag pole. The two U-shaped portions are loosely secured around the flagpole. The rotator is disposed on the flagpole beneath the upper collar. The device contains a lower collar having two U-shaped portions. The two U-shaped portions are adapted for securement around a flag pole. The two U-shaped portions are tightly secured around the flagpole. The lower collar is disposed on the flagpole beneath the rotator. A tie-off cleat is secured to the outer surface of the rotator portion. The tie-off cleat serves for securement to a lanyard attached to a flag.

Abstract: A resonant inverter is current mode-controlled with a transistor supplying current through a primary winding of a transformer. The cycle of operation includes conducting, resonating, and clamping portions of the cycle, with the transistor being turned on for the conducting portion. The resonating portion includes a storage capacitor connected to the primary winding and commences when current-responsive means of the transistor or first semiconductor turns on a second semiconductor, which in turn turns off the first semiconductor. During this resonating stage, the current in the primary winding reverses and stores energy in a storage capacitor. A clamping portion of the cycle includes a unidirectional conducting means or diode which conducts for a time for the excess energy stored in the tank circuit to return to the input and be stored in a filter capacitor.