Metal Detector circuit with TDA2822

Published:2012/9/11 21:19:00 Author:Ecco | Keyword: Metal Detector | From:SeekIC

Here is a simple metal detector with TDA2822 and few NPN transistors. There is a small arrow connected from the Emitter of the T3 to the 10n Capacitor C4. That arrow is simply indicating signal flow as right to left in that particular wire, which is different from the remaining circuit's left to right.



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