Power tool

A power tool comprising:

• a brushless motor;
• a rectifier circuit configured to rectify an AC voltage and output a rectified voltage;
• a smoothing circuit configured to smooth the rectified voltage and output a smoothed voltage;
• an inverter circuit configured to supply the smoothed voltage to the brushless motor while performing switching actions with respect to the smoothed voltage;
• a controller configured to control switching operations of the inverter circuit;
• an operating part being operable by a user;
• and
• a switch rendered ON in accordance with an operation performed in the operating part by the user to allow power to be supplied to the inverter circuit by the rectifier circuit through the smoothing circuit and rendered OFF in accordance with release of the operation by the user to interrupt the inverter circuit from the rectifier circuit to halt supplying the power to the inverter circuit,
• wherein the smoothing circuit comprises a first capacitor and a second capacitor connected in parallel, and
• wherein the switch is interposed between the rectifier circuit and the inverter circuit and is interposed between the first capacitor and the inverter circuit.

A power tool comprising:

• a brushless motor;
• a rectifier circuit configured to rectify an AC voltage supplied from an AC power supply and output a rectified voltage;
• an inverter circuit configured to perform switching actions with respect to the rectified voltage to be supplied to the brushless motor;
• a controller configured to control the switching actions of the inverter circuit;
• a trigger having an operating part being operable by a user;
• a switch rendered ON and OFF in accordance with an operation performed in the operating part, wherein when the switch is ON, the inverter circuit is electrically connected to the AC power supply whereas when the switch is OFF, the inverter circuit is electrically disconnected from the AC power supply;
• and
• a power supply circuit connected between the switch and the AC power supply and is configured to supply a voltage to the controller.