article · German
EAI-Report Nr. 011, März–April 1967
The March-April 1967 issue of the EAI-Report (No. 011), published by EAI Electronic Associates GmbH in Aachen, introduces the Series 6200 modular digital measuring system with detailed specifications for its DC integrating voltmeter (Series 6201), digital counter (Series 6202), and AC converter (Series 6203) plug-in modules. A technical article by Dipl.-Ing. K.H. Hortenbach describes an analog computer sample-and-hold circuit that exploits the parallel subroutine technique for efficient polar-to-Cartesian, Cartesian-to-polar, and coordinate-axis-rotation transformations, demonstrating substantial savings in nonlinear computing elements. The issue also covers the Brush logarithmic preamplifier for multi-channel recorders, Class B used-equipment availability (TR-48/58, TR-20), characteristics of the EAI 9000 hybrid scientific computing system, and a calendar of 1967 EAI events across Germany.