Patent ID: 8373317

Claim:
A hand tool RFI suppression system comprising: a DC motor having a conductive housing; a power supply; a suppression circuit board supporting at least one suppression assembly and at least one ground circuit electrically coupled to the suppression assembly; wherein the suppression circuit board is mounted to the motor housing with the at least one suppression assembly electrically coupled in parallel between the power supply and the DC motor and the ground circuit is electrically coupled to the motor housing and wherein the motor includes a motor voltage terminal and a motor around terminal, and the suppression circuit board includes a ground contact that is electrically connected to the motor ground terminal without wires and a voltage contact that is electrically connected to the motor voltage terminal without wires, wherein the voltage contact is electrically connected to a terminal of the suppression assembly and the ground contact is electrically connected to another terminal of the suppression assembly to suppress RFI.