Embodiments of the invention relate generally to semiconductors for power generation and conversion applications, and more particularly, to devices, integrated circuits, substrates, and methods to convert direct current voltage signals to alternating current voltage signals. The radiographic detector acquires a radiographic image in accordance with incident radiation, and has a heat-generating body inside. The sub-driving stage has two sub-current sources, and is adapted for receiving a second differential input data stream and counteractingreducing the attenuation or distortion of the differential output data stream caused by a long transmission distance by using the sub-current sources. A second demodulator is operative to generate a second AGC signal responsive to the second IF signal. The piston has a leading end, a trailing end, an inlet valve that is located at the leading end of the piston for receiving a compressible fluid from the compression chamber and an outlet valve that is located at the trailing end of the piston for expelling a combustion gas into the arcuate expansion chamber. The selectivity of the etch process for silicon carbide versus silicon oxide, organo silica-glass or other low dielectric constant type material is enhanced by adding hydrogen or ammonia or other hydrogen-containing gas to the etch chemistry.