The invention relates to a DEPFET transistor for detecting a radio-generated signal charge and for generating an electronic output signal in a manner dependent on the detected signal charge according to a predetermined characteristic curve. The base portion of the brush is installed at the exposed portion of the pattern of the brush base above the bracket at an elevation angle of 45\xb0 or less with respect to the brush base. The first matrix component may predominantly comprise a substantially uncatalyzed component and the at least one other matrix component may predominantly comprise a substantially unreacted hardener component. The presentation of the history may be manipulated through a set of controls, such as a play button, a reverse button, a fast forward button, and a stop button.