Abstract: Methods and systems for controlling power output from an external power source in a transcutaneous energy transfer (TET) system are provided to prevent inadvertent energy transfer when no secondary coil is present. The system operates by transmitting power transcutaneously from an external primary coil and determining whether a response from a secondary coil implanted within a patient is detected. If no response is detected, the power output of the primary coil is decreased. The decrease in power output can be accomplished by operating the primary coil at a lower average power level, which can include variations in power level, duty cycle, etc. The system can also be configured to periodically repeat the process in order to continue searching for a coupled secondary coil.

Abstract: Methods and systems for controlling power output from an external power source in a transcutaneous energy transfer (TET) system are provided to prevent inadvertent energy transfer when no secondary coil is present. The system operates by transmitting power transcutaneously from an external primary coil and determining whether a response from a secondary coil implanted within a patient is detected. If no response is detected, the power output of the primary coil is decreased. The decrease in power output can be accomplished by operating the primary coil at a lower average power level, which can include variations in power level, duty cycle, etc. The system can also be configured to periodically repeat the process in order to continue searching for a coupled secondary coil.

Abstract: The present invention provides a method for making the production of hydrogen during electrolysis more efficient. By using the expansion of hydrogen and oxygen during electrolysis to produce electricity by turning air pressure wheels attached to DC generators, allows us to harvest the pressure the gases make in their sealed sections of the apparatus. By using the rising of the gas bubbles in the electrolytic solution to turn several small wheel attached to small DC generators, allows us to harvest power from their motion to the top of the apparatus. This invention does not alter the oxygen gas or hydrogen gas in any way, allowing both gases to be used or stored in their pure form. The energy gained by this method is directed back to the DC power source and makes the production of hydrogen and water more efficient by replacing electrical energy lost in the form of heat during electrolysis.