Mini Pulse PI Diskriminator - Sascho Bulgaria

[GeoMax]

Hello,

A long time ago, this schematic was published (by Sascho ???) on Geotech. At the time, questions were raised regarding how the Pulse IB discriminator circuit works and how the coil windings are oriented and connected. Sascho never responded. The circuit looks interesting, and perhaps now we can finally get some answers.

[Orbit]

Hi GeoMax That scheme works but it is without balance of the country, I made it a long time ago, I don't remember all the details except that it does discrimination.

[GeoMax]

Hi GeoMax That scheme works but it is without balance of the country, I made it a long time ago, I don't remember all the details except that it does discrimination.

Hi Orbit,

thanks for your reply. One of the main questions I have is: how are the coil windings interconnected, and what is the winding direction of all three coils (image top right corner)? Do L1 and L2 have the same winding direction? Or are they opposite? And what is the winding direction of L1.1 relative to L2—the same as L2, or the opposite? Unfortunately, this isn't really evident from the schematic. That is, unless the "strange dots" on the connection (L1 & L1.1) are meant to indicate the winding direction. However, they could just as easily represent connection points for the coils. If you have any information regarding this, it would be great if you could post it here.
Thanks.

[Orbit]

Hi Orbit,

thanks for your reply. One of the main questions I have is: how are the coil windings interconnected, and what is the winding direction of all three coils (image top right corner)? Do L1 and L2 have the same winding direction? Or are they opposite? And what is the winding direction of L1.1 relative to L2—the same as L2, or the opposite? Unfortunately, this isn't really evident from the schematic. That is, unless the "strange dots" on the connection (L1 & L1.1) are meant to indicate the winding direction. However, they could just as easily represent connection points for the coils. If you have any information regarding this, it would be great if you could post it here.
Thanks.

The transmitting coil in the opposite direction from the receiving coil and L3 and the direction of the Transmitting coil, I don't remember exactly the circles. But certainly the balancing or compensation is completely the same as when making concentric coils. For example, as it is adjusted for Whites Blu or Black max coil, this coil is also compensated with L3. That's how I did it, but I say a long time ago. Probably DD could be done for easier balancing of the coils. My opinion is that it also works with DD.I didn't pay attention to the number of circuits on the diagram, now I see 60 circuits L1 transmitter L2 receiver 200 circuits and L1. 1 is compensation! I'm sure I was sticking to the schematic data.I would suggest if you are going to try DD 60 rounds in the transmitter and 200 rounds in the receiver.

[GeoMax]

Hi Orbit,

thanks for the info.

[Detectorist#1]

Hi Chris,
The "Mini Pulse PI Discriminator" use the same idea like well known "MPS dual tone detector" from dfbowers. Only two differences: The detector from Sascho have only discrimination channel and the TX pulse is shortened to the sample pulse. The principle of discrimination is explained on the attached picture. The practical use of "Mini Pulse PI Discriminator" is limited from influence of the Earth magnetic field and the lack of "Ground Balance" feature.

[GeoMax]

Hi Vladimir,

thanks...

[scs-bg]

This was an idea of how to make discrimination in a pulse induction detector. After that, many designs of hybrid detectors appeared. This detector needs one more channel. It has to process the signal after the end of the pulse. All metals channel.

[pechkata]

This was an idea of how to make discrimination in a pulse induction detector. After that, many designs of hybrid detectors appeared. This detector needs one more channel. It has to process the signal after the end of the pulse. All metals channel.

Yes - I mentioned it somewhere too...


But for this Vladimir, the grapes are sour...

[Detectorist#1]

Hi pechkata,
If the author of this project agree with my remarks for practical possibility to use, why you add comments for the grapes? Maybe you not agree with the author or you are more clever than them.

[pito]

Hi pechkata,
If the author of this project agree with my remarks

[scs-bg]

O sancta simplicitas