application-note · German
Totzeitglied
Engineering report produced after a ten-week internship at Dornier Friedrichshafen (October 1971), describing a dead-time element add-on unit for the DO 80 analog computer. The unit implements variable delay (1 ms to 10 s) via an analog-to-digital conversion chain: input op-amp (AD 503) compresses ±10 V to 0–10 V, an ADC 540-8 digitises to 8-bit words, a 100-position Signetics 2510k shift register provides the programmable delay, and a DAC 371-8 with output op-amp reconstructs the ±10 V analog signal. A VCO (8038) clocks the chain at a rate controlled by a panel voltage, and control logic interfaces the unit to the DO 80 bus (Compute/Halt/Initial Condition modes). Detailed circuit analysis, component selection, calibration procedures, oscillograms, and a full schematic are included.