Method and device for hand-held machine tool for optimized processing to various substrates by energy adjustment

A method for automatically setting a hand-guided machine tool (M), in particular a hammer drill, which in different operating states (I, II) is operable, characterized in that the machine tool (M) when switching on, first in a first operating state (I) at a reduced supply voltage and after a predetermined period of time in a second operating state (II) is switched at an elevated power supply voltage.