The circuit was constructed using a few components to produce a unique buzzer with adjustable buzzer tones. Buzzer – an electronic signaling device that produces light and buzzing sound when activated ...
The heart of this diy metal detector circuit is the CS209A IC. The metal detector is built with one 100µH coil that has 40 mm in diameter and is made of 50 turns/0.4 mm wire. CS209A has one oscillator ...
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