Method for regulating the power supply to a direct-current motor and a device for the application of said method

A device for regulating the current intensity and voltage applied to a direct-current electric motor comprising:

• two transducer-type sensors for separately converting the supply current intensity and voltage into converted quantities in accordance with the same scale of a representative quantity, first comparator means connected to said transducer type sensors for comparing said converted quantities and selecting the larger one, reference means for generating a reference value of said representative quantity, second comparator means connected to said first comparator means and said reference means for comparing said larger converted quantity with said reference value and producing a difference signal, supply regulator means connected to said second comparator means, power control means connected to said supply regulator for supplying said electric motor, a generator for producing oscillations, and third comparator means having inputs connected to said supply regulator and said generator and an output connected to said power control means whereby a chopped signal is supplied to said power control means.