Submitted by: Höhere Technische Bundeslehranstalt Braunau / Inn
Implemented country: Austria
Title: Digital audio amplifier
This workshop project at the technical secondary school in Braunau, Austria, set the goal of developing an audio amplifier with a better efficiency than conventional products in order to save energy. Instead of continuous voltage at the speaker, the speaker magnet is activated to vibrate by with short current pulses. This creates equivalent audiophile enjoyment with energy-saving music. The prototype has already been implemented.