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Abstract

A method for assembling a hair cutting appliance is presented. A body is provided with a power switch connected to a power source. A drive system within the body is in selective electrical communication with the power source. A cutting unit is electrically connected to the drive system. An optical sensor is mounted to the body to sense a pre-defined skin-hair edge. A control circuit within the body is electrically connected to the optical sensor. A switching element is electrically connected with the control unit. The switching element is switchable by the control circuit between a conducting state and a non-conducting state. The switching element is switched to the non-conducting state when a sensed condition of the optical sensor exceeds a first pre-programed threshold. The first pre-programmed threshold is stored in the control circuit. A method is provided for assembling a power transform module used with a hair cutting appliance.

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First Claim