Abstract: Proposed is a showerhead device including a pleated filter. In the showerhead device, a head includes a housing allowing water to enter and a cap coupled to the housing and having water discharge holes. A filter module inside the head includes a pleated filter. A core is provided inside the filter and has holes. An outer cage is provided outside the filter and has holes. A housing frame is mounted inside the head, accommodates the filter module, and includes an inner support inserted into the core, an outer frame surrounding the outer cage and having holes, a first side plate closing one sides of the outer frame and the inner support, and a second side plate coupled to the other sides of the outer frame and the inner support and having discharge holes. The filter module accommodated within the housing frame is inserted into or removed from the head.

Abstract: A regulator control circuit includes a regulator configured to provide an output voltage by regulation using one of an input voltage and a dropped input voltage, to a load; and a heat dissipation circuit configured to sense a change in the input voltage, and provide the dropped input voltage to the regulator when the input voltage is sensed to be equal to or higher than a preset level.

Abstract: A regulator control circuit includes a regulator configured to provide an output voltage by regulation using one of an input voltage and a dropped input voltage, to a load; and a heat dissipation circuit configured to sense a change in the input voltage, and provide the dropped input voltage to the regulator when the input voltage is sensed to be equal to or higher than a preset level.