Output Signal

In yesterday's update, I mentioned that I would be re-coiling the transmitting coil to boost the output signal of the metal detector. I re-coiled it and found that the change in strength was pretty much non-existent, and after a few experiments I found that the operational amplifier I am using in the Wein-Bridge oscillator is the culprit. The output current is limited to around 50 mA, which doesn't supply enough power to operate the metal detector beyond very close range.

I have ordered some new op amps (OPA 548) which have a maximum output current of 3A. This should be more than enough to power the oscillator. The new components should arrive early next week.

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