• on Audio/Video/Photography
  • Published in issue 7/2009 on page 72
About the article

Load Protection for Audio Amplifiers

In order to be effective, any protection device connected between an audio amplifier output and the speakers needs to connect the load only after a few seconds' delay, disconnect it immediately the mains supply is turned off, and prevent any high-level DC component from being able to damage the loudspeakers. The cheap and simple circuit discussed in this article meets all these criteria.
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