Help understanding Schematic — Percussion Synthesizer

MrChips

Joined Oct 2, 2009
26,099
The LM741 op-amp is wired as a twin-T oscillator.
Normally, the circuit is sitting idle generating no output. When S1 is pressed, the oscillator is triggered and then rapidly dies away. This generates a percussion sound.

LM386 is a popular ¼W audio amplifier driving an 8Ω loudspeaker.
 
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