Patent ID: 9720016
Date: 2017-08-01
CPC Classifications: B25D,B25F,G01R

Claim:
1. A hand-held power tool having a measuring system for determining an effective value of an alternating voltage supplied via an external conductor with respect to a neutral conductor, comprising: a regulated direct voltage source; a voltmeter which is supplied with power by the direct voltage source; a voltage divider disposed between a power supply potential and a ground and which has a first resistor between the power supply potential and a tap and a second resistor between the tap and the ground; wherein the voltmeter has a measurement range whose measurement input is connected to the tap and determines an effective voltage from a voltage on the tap; and a measurement line which connects the tap to the external conductor; wherein a first resistance value of the first resistor is lower than a second resistance value of the second resistor such that an average voltage value at the tap is equal to a mean of the measurement range for a period of the alternating voltage.