Rated voltage (V)/minimum voltage (V), end of charge voltage (V) …

The voltage generating unit (7) generates the maximum voltage (VHmax) and the minimum voltage (VHmin) for positive polarity driving and the maximum voltage (VLmax) and the minimum voltage (VLmin) for negative polarity driving.

For this purpose, preferably a minimum voltage and a maximum voltage are detected at the ouput terminals.

The universal switching power supply achieves a ratio between the highest voltage and lowest voltage of at least 27.

Finally, a buck boost convertor (120) receives the DC current haaving the at least said minimal voltage and outputs DC having a desired voltage.

The apparatus has a filter for determining the battery terminal voltage when the vehicle ignition is turned on.

of a voltage of 5 V or more but not more than 90 V

The calculator (30) may be arranged for calculating the boundary voltage value as a function of a minimum voltage value of the voltage signal and of a steady state voltage value of the voltage signal.

A boost converter (110) receives DC current having a first voltage from the rectifier (101) and outputs DC current having at least a minimal voltage.

What is the minimum voltage which is usually dangerous to humans?

The current load supplied by the fuel cell stack (54) is decreased if the minimum fuel cell voltage value is less than a second voltage value.

The current load supplied by the fuel cell stack is increased if the minimum fuel cell voltage value exceeds a first voltage value.

The minimum voltage needed is in the region of 3 V.

Remember, minimum tension, just enough to hold it smooth.

The current load is increased and decreased based upon a difference between the minimum fuel cell voltage and the first voltage value.