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Control device for an electric motor

  • US 20040112616A1
  • Filed: 09/24/2003
  • Published: 06/17/2004
  • Est. Priority Date: 03/24/2001
  • Status: Active Grant
First Claim
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1. A device for driving an electric motor (23), in particular a brushless DC motor in an electrical tool which is powered by a rechargeable battery, having at least one power semiconductor (3), in particular for controllable application of an electrical voltage to the electric motor (23), having a control circuit (4) for controlling the power semiconductor (3), and having a mounting plate (2), in particular a printed circuit board, with at least a portion of the control circuit (4), in particular electrical and/or electronic components (5) as well as the conductor tracks (6) (which connect the electrical and/or electronic components (5)) of the control circuit (4), being arranged on the mounting plate (2), and with the power semiconductor (3) being arranged on the mounting plate and/or on a mount element (7) which is mounted on the mounting plate (2).

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