The invention is directed to a system for adjusting a transmission ratio in a transmission built into a motor vehicle. This counter electromotive force is amplified applying a predetermined period and a predetermined chopper-width by a chopper-amplifying waveform shaping circuit. The power regulator provides power to the power rails, based upon a control signal. In yet another embodiment, the catholyte heat recovery process is used in conjunction with additional heat exchanger processes to further concentrate the final product as desired. The at least one telecommunication data set is preferably examined with regard to a parameter that indicates speech or with regard to portions that are representative for speech.