application-note · English
Simulating a Bouncing Ball in a Box
A single-page application note by Bernd Ulmann describing how to simulate a bouncing ball in a box on an analog computer, inspired by an earlier Telefunken paper. Three subcircuits are used: one for y-position with gravity and damping via Z-diodes, one for x-position using comparators for wall reflection, and one generating a high-frequency sine/cosine pair to render a circular ball on an oscilloscope screen. The implementation runs on an RA742 analog computer in repetitive mode.
simulationoscilloscope displaydifferential equationscircuit design