Hello. I'm a complete newbie at this forum & I though I might take a stab at getting some help here. I've a circuit for building a metal detector, but I'm somewhat lacking in completely understanding it.
The transmitter part has a relaxation oscillator which functions as an 800Hz modulator & then a Colpitt's oscillator which is a 130Hz oscillator. Could someone please explain the process that's going on in this section? Here's the circuit in pdf form.
The transmitter part has a relaxation oscillator which functions as an 800Hz modulator & then a Colpitt's oscillator which is a 130Hz oscillator. Could someone please explain the process that's going on in this section? Here's the circuit in pdf form.
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