When two sine-wave signals in quadrature, the integral of the output is equal to zero. The negative electrode comprises a lithium-titanium composite oxide, wherein a crystallite diameter of the lithium-titanium composite oxide is not larger than 6. Each set of power supplies and their load, i. The sequence of micro-operations constitutes an operation pipeline. The apparatus and method rectifies an AC voltage emanating from the generator source and monitors unsafe operating conditions of the generator’s circuit wherein operation of the lifting device is ceased when predetermined electrical operating parameters are exceeded.