Electronic switching module for a power tool

摘要

An electronic power apparatus is provided, including a circuit board having a conductive pads and a sense pad coupled to an output signal, and an actuator having a wiper portion accommodating a conductive wiper. The wiper includes a first end arranged to engage the sense pad and a second end arranged to slidably engage at least one of the conductive pads on the circuit board. The conductive pads are arranged in a first row of conductive pads and a second row of conductive pads in parallel with and at a distance to the first row of conductive pads. An alignment of the second row of conductive pads is offset with respect to the first row of conductive pads.

主权项

1. An electronic power apparatus comprising:
a circuit board comprising a plurality of conductive pads and a sense pad coupled to an output signal; and an actuator having a wiper portion accommodating a conductive wiper, the wiper having a first end arranged to engage the sense pad and a second end arranged to slidably engage at least one of the plurality of conductive pads, wherein the plurality of conductive pads comprises a first row of conductive pads and a second row of conductive pads arranged in parallel with and at a distance to the first row of conductive pads, an alignment of the second row of conductive pads being offset with respect to the first row of conductive pads, the plurality of conductive pads further comprising an end pad arranged at a distal end of the plurality of conductive pads, wherein the conductive pads from the first and the second rows are alternatingly coupled via a plurality of first resistors that are connected in series and coupled to a first power source having a first voltage level and the end pad is coupled via a second resistor not in series with the first resistors to a second power source having a second voltage level different from the first voltage level.