| 摘要 |
Embodiments of a trigger switch circuit are described. In some embodiments of the trigger switch circuit wasteful power consumption is suppressed without increasing the number of components by providing a changeover switch. In some embodiments, a trigger switch circuit operates in conjunction with a trigger of an electric instrument and comprises a main switch, a sliding switch, a light-emission control unit, and a rotation control unit. In some embodiments, when the trigger is in a first position, the sliding switch is connected to one of the fixed contact points, and electric power is fed to the light-emission control unit without interposing the main switch to emit light in an LED. When the trigger is in a second position, the main switch is turned on to feed the electric power into the trigger switch circuit.
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