Hi Guys... I recently built a microprocessor controlled pulse induction metal detector
capable of discrimation (So I thought)
From what I understood, a ferrous metal should cause a longer decay and a non-ferrous
metal a shorter decay.
I did some tests today and could not observe any difference in the waveform between
ferrous and non-ferrous metals.
I played with the damping resistor to see if it was under damped or over damped but could not
ever get any differences between the two types of metal...
If you experts have any idea on what I'm doing wrong it would be really appreciated..
capable of discrimation (So I thought)
From what I understood, a ferrous metal should cause a longer decay and a non-ferrous
metal a shorter decay.
I did some tests today and could not observe any difference in the waveform between
ferrous and non-ferrous metals.
I played with the damping resistor to see if it was under damped or over damped but could not
ever get any differences between the two types of metal...
If you experts have any idea on what I'm doing wrong it would be really appreciated..
Comment