Abstract: The present invention provides a power converter apparatus which reduces power loss in a diode bridge element in order to achieve energy saving. The power converter apparatus is equipped with two diode bridge elements, and reduces power loss in respective diodes by connecting two input terminals of the one diode bridge element to one AC input terminal of the power converter apparatus, connecting two input terminals of the another diode bridge element to another AC input terminal, connecting a positive pole output terminal to respective positive pole output terminals of the two diode bridge elements and a positive electrode terminal of a capacitor, and connecting a negative pole output terminal to respective negative pole output terminals of the two diode bridge elements, and a negative electrode terminal of the capacitor.

Abstract: The present invention provides a hot water device for bathtub in which water is not wasted to allow energy saving and at the same time it is possible to save a trouble of adjusting the temperature of water for bathtub supplied to the bathtub to a temperature desired by the user during bathing. In the hot water device for bathtub of the invention, the water for bathtub having its temperature varied by the controller to temperature desired by the user during bathing is supplied to a bathtub. Accordingly, the temperature adjustment using hot water is not needed, and thus water is not wasted to allow energy saving and at the same time it is possible to save a trouble of adjusting the temperature of hot water in the bathtub to a temperature desired by the user during bathing.