A power tool comprising: a housing able to be coupled to an electrical power source ; a motor contained in the housing and selectively connectable to the power source ; a light unit coupled to the housing and selectively connectable to the power source ; a switch unit coupled to the housing , wherein the switch unit can be selectively activated to cause power to be delivered to the motor and to the light unit , and selectively deactivated to cause power delivered to the motor to be interrupted; a control circuit connected to the switch unit and to the light unit , and having a timer configured to keep the light unit illuminated for a predetermined amount of time after the switch unit has been activated or deactivated; and a boot circuit connected to the control circuit , the boot circuit configured to connect the control circuit and the light unit to the power source when the switch unit is deactivated subsequent to being activated to enable the light unit to remain illuminated after the switch unit has been deactivated, wherein the boot circuit comprises a semiconductor switch having a first terminal connected to the power source on one side of the switch unit and a second terminal connected to the power source on an opposite side of the switch unit, so that closing the semiconductor switch causes power to be delivered to the control circuit and to the light unit ; characterized in that the control circuit is configured to interrupt power flow through the semiconductor switch if the control circuit determines that the switch unit has been activated a second time, subsequent to being deactivated, before expiration of the predetermined amount of time. a housing able to be coupled to an electrical power source ; a motor contained in the housing and selectively connectable to the power source ; a light unit coupled to the housing and selectively connectable to the power source ; a switch unit coupled to the housing , wherein the switch unit can be selectively activated to cause power to be delivered to the motor and to the light unit , and selectively deactivated to cause power delivered to the motor to be interrupted; a control circuit connected to the switch unit and to the light unit , and having a timer configured to keep the light unit illuminated for a predetermined amount of time after the switch unit has been activated or deactivated; and a boot circuit connected to the control circuit , the boot circuit configured to connect the control circuit and the light unit to the power source when the switch unit is deactivated subsequent to being activated to enable the light unit to remain illuminated after the switch unit has been deactivated, wherein the boot circuit comprises a semiconductor switch having a first terminal connected to the power source on one side of the switch unit and a second terminal connected to the power source on an opposite side of the switch unit, so that closing the semiconductor switch causes power to be delivered to the control circuit and to the light unit ; characterized in that the control circuit is configured to interrupt power flow through the semiconductor switch if the control circuit determines that the switch unit has been activated a second time, subsequent to being deactivated, before expiration of the predetermined amount of time. <EOS>