Regulator circuit for controlling power supplied to electric motor for e.g. electric hand tool, has microprocessor incorporated into switching element control circuit

摘要

A microprocessor (6) is incorporated into the control circuit (4) for controlling the semiconductor switching element (3). The regulator circuit comprises a semiconductor switching element connected in series to the motor (2) and voltage source (1), a control circuit for controlling the semiconductor switching element, and an operating element (5) such as a finger-operated button for operating the control circuit by means of an operating signal generated by this element and fed to the control circuit.