Abstract: A transistor circuit comprising a first differential amplifier which is composed of a differential pair and a current mirror. The transistor circuit further comprises a second differential amplifier which measures a differential offset voltage in the first differential amplifier and reduces this offset voltage by means of common mode current feedback. The transistor circuit thus provides a stable amplifier having a high speed and a low offset voltage which can be used advantageously in a logic output buffer so that, for example, an ECL output buffer can be realized in CMOS.

Abstract: An adjusting device for the main shield of a grader in which two lifting cylinder, a sideways adjusting cylinder and two pivot arms interconnected by an arresting bridge for actuating the main shield are by the arresting bridge linked to a bridge frame of the grader which bridge frame has a rectangular cross section. Each of the two pivot arms are arranged for pivoting about two joints while one of the pivot arms has its free end provided with fulcrums arranged asymmetrically with regard to the vertical axis of symmetry for establishing linkage connection with one lifting cylinder and a sideways adjusting cylinder. The other one of the two pivot arms is at its free ends provided with a fulcrum for establishing linkage connection with the other lifting cylinder.