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Hello everyone, I made XR-71 circuit, but can not complete the probe, how to adjust it?
Can someone explain this in detail the working principle of metal detectors do?
Because the component is not enough, I use 9014 instead of BC546, Ｉuse 9015 instead of BC557,I use LM358 or NE5532 instead of TL062.：D
Can someone explain this in detail the working principle of metal detectors do?
Because the component is not enough, I use 9014 instead of BC546, Ｉuse 9015 instead of BC557,I use LM358 or NE5532 instead of TL062.：D