This article is part of the Ideas for Design Series: Vol. 3, No. 7. This simple, robust, and low-cost signal generator, based on the LM386 power amplifier IC, provides a trio of audio-band signals ...
This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker. Agreeable, very close ...
In the 1980s, I started a job with a company that produced high-end analog stereophonic-audio systems. One of the products was a system comprising a 200-W amplifier, a tape deck, a turntable, and a 10 ...
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