Abstract: Various examples are directed to a converter system comprising first and second series-connected converter modules and a synchronization circuit. The synchronization circuit may modulate a reference signal onto a carrier signal to generate a synchronization current signal and the synchronization current signal to an output current of the converter system to generate an aggregated output current. A first converter module may receive the aggregated output current from a first current sensor and generate a first reproduced synchronization signal at least in part from the aggregated output current. A first switch control signal for switching at least one switch at the first converter may be generated based at least in part on the first reproduced synchronization signal.

Abstract: Various examples are directed to a converter system comprising first and second series-connected converter modules and a synchronization circuit. The synchronization circuit may modulate a reference signal onto a carrier signal to generate a synchronization current signal and the synchronization current signal to an output current of the converter system to generate an aggregated output current. A first converter module may receive the aggregated output current from a first current sensor and generate a first reproduced synchronization signal at least in part from the aggregated output current. A first switch control signal for switching at least one switch at the first converter may be generated based at least in part on the first reproduced synchronization signal.

Abstract: A golf swing training apparatus consisting of positioning, indicating and guidance means cooperable with a golf club for learning, practicing and performing essential components of a swing method based on a concept of a lower swing phase related predominantly to a vertical virtual axis around which the body rotates, an upper swing phase related predominantly to a horizontal virtual axis tied to the vertical virtual axis and around which the arms swing and a “wrist cocking plane” maintained in a fixed relationship to the forearms, said essential components being: appropriate gripping formation; configuration of the forearms wrists hands and club when the wrists are fully cocked within the “wrist cocking plane”, appropriate relationships of arms, wrists, hands and club to the lower body in the lower swing phase; and relationship of the club and ‘wrist cocking plane” to the shoulders at the end of the backswing.

Abstract: A system for the direct firing of immersion tubes for heating of liquids in vats or tanks, including a gas burner, of the postmixer nozzle type comprising a gas supply tube having a blanked off downstream end provided with a series of peripheral gas ports, the gas tube being concentrically disposed within an air tube and having a perforated cone attached thereto slightly rearwardly of the gas ports, the arrangement being such that gas and air is entrained above atmospheric pressure and thoroughly mixed at the burner head by the turbulent flow of air through the perforated cone and around its periphery so as to create regions of gas rich and weak mixtures whereby to obtain flame stability. The system also includes a combustion chamber communicating the burner with the immersion tube.