| 主权项 |
1. A power tool comprising:
a housing defining a longitudinal axis and having a nose portion; a variable speed motor enclosed within the housing and including an output member that extends from the nose portion of the housing parallel to the longitudinal axis, the variable speed motor being configured to receive a speed control signal and to drive the output member at different drive speeds depending on a parameter of the speed control signal; a speed signal generator configured to generate the speed control signal; a power circuit for connecting the speed signal generator to a power source; and a slide switch slidably supported on the housing and being operably connected to the power circuit, the slide switch being slidable between a first position and a second position in relation to the housing and being configured to output a variable selection signal having a value that depends on a location of the slide switch in relation to the first and the second positions, wherein the speed signal generator is coupled to receive the selection signal from the slide switch and to generate the speed control signal such that the parameter of the speed control signal depends on the value of the selection signal, wherein, when the slide switch is in the first position, the slide switch opens the power circuit and cuts off power to the motor, and wherein, when the slide switch is moved from the first position toward the second position, the power circuit is closed and power is supplied to the motor. |
