A building board as a carrier for a surface cladding of tiles, a plaster or a thin-layer trowel mortar has a moisture-resistant foam core layer which is provided on both sides with a paper or plastic film web on which a fibre material web made of nonwoven fabric or a knitted or machine-knitted fabric defining the outer side of the building board is disposed. In an illustrative embodiment, a control circuit may be independently configurable with respect to an amplifier that generates a signal for the output stage, and the control circuit may bias a compensation circuit that provides thermal tail compensation for an output stage transistor. The electric motor is configured to change volumes of the cylinder chambers by eccentrically moving the cylinder and the piston relative to each other. The charge generation layer may be on the first organic light emitting layer. The lead frame is cleaned and subsequently rolled onto a fourth coil to be cut into sheets. The present invention can provide a semiconductor device having a reference voltage generating circuit capable of generating the reference voltage that does not greatly depend on a power supply voltage and its control method.