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Greetings to all!
Has anyone tried to make a similar sensor (coil)?
Looking at the Bigfoot coil, I became interested in this design, but I did not like that in such a sensor, the target is determined only in one half of the PX coil.
In the proposed design, the target detection zone should be in the "middle" part of the sensor. And this is quite an optimal option.
With my new Stalker IB metal detector, I have already tried an Omega type sensor. I really liked him. I did it on 18 kHz. Now a similar sensor is being manufactured for 12kHz.
I had the experience of building a Super DD sensor, but it can only be used for uncluttered places. He does not see very deeply, but he determines well the coins that are "on the edge".
And now I want to gain experience in the manufacture of a differential sensor. Therefore, I would like to ask everyone for advice:
1. What dimensions are needed for such a sensor. For a bigfoot, I saw, you need dimensions of 480mm x 65 mm.
2. The TX coil will be with a consistent resonance. And what kind of RH coil to make: with parallel resonance or without resonance?
2.1 The metal detector circuit allows you to embed an H-bridge to control the TX coil. The signal power can be regulated by the bridge supply voltage. Does it make sense to use such a bridge?
Has anyone tried to make a similar sensor (coil)?
Looking at the Bigfoot coil, I became interested in this design, but I did not like that in such a sensor, the target is determined only in one half of the PX coil.
In the proposed design, the target detection zone should be in the "middle" part of the sensor. And this is quite an optimal option.
With my new Stalker IB metal detector, I have already tried an Omega type sensor. I really liked him. I did it on 18 kHz. Now a similar sensor is being manufactured for 12kHz.
I had the experience of building a Super DD sensor, but it can only be used for uncluttered places. He does not see very deeply, but he determines well the coins that are "on the edge".
And now I want to gain experience in the manufacture of a differential sensor. Therefore, I would like to ask everyone for advice:
1. What dimensions are needed for such a sensor. For a bigfoot, I saw, you need dimensions of 480mm x 65 mm.
2. The TX coil will be with a consistent resonance. And what kind of RH coil to make: with parallel resonance or without resonance?
2.1 The metal detector circuit allows you to embed an H-bridge to control the TX coil. The signal power can be regulated by the bridge supply voltage. Does it make sense to use such a bridge?
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