Bipolar PI MD with GB and DD Coil

[Qiaozhi]

Due to some recent interest in the Voodoo Project, and In order to answer the questions above concerning ground response, I am attaching Chapter 7.

If you want to read the rest of the book, please go to -> The Voodoo Project - Published October 2020
and purchase a copy from Amazon.

[Detectorist#1]

Hello pechkata,
I know this video. Unfortunately, in this video I not see tests with different orientation of the targets and all these tests are in the air! My questions remain - what is the behavior of this idea in real soils with different orientations of the targets? The deep of the digging is important for all us!

[Detectorist#1]

Hello George,
Thank you very much for this broad and serious analysis of the Voodoo project's behavior. We all have a lot of work to do in the future!

[ArchibaldSTM]

Did you build the standard DeltaPulse or modify the circuit?.

Hello. Standard. And what's surprising ---- in a house where there's a lot of metal and interference, it behaves quietly.

[pechkata]

Hello pechkata,
I know this video. Unfortunately, in this video I not see tests with different orientation of the targets and all these tests are in the air! My questions remain - what is the behavior of this idea in real soils with different orientations of the targets? The deep of the digging is important for all us!

Hello Detectorist#1
The video shows how to hear ferro.

[Orbit]

Hello
The ground balance of PI detectors moves discrimination to nothingness...
This is very clearly seen in the operation of Hybrid detectors.
Everyone is working at the table...

Do not be sure that hybrids work in reality of course not all... I think Karl is smiling at you as he reads this.And a phenomenal man is smiling sweetly!

[pechkata]

Do not be sure that hybrids work in reality of course not all... I think Karl is smiling at you as he reads this.And a phenomenal man is smiling sweetly!

The evidence is admitted with facts - video test.
Karl NC can take a stand on the matter himself.

[pechkata]

Hello pechkata,
I know this video. Unfortunately, in this video I not see tests with different orientation of the targets and all these tests are in the air! My questions remain - what is the behavior of this idea in real soils with different orientations of the targets? The deep of the digging is important for all us!

Hello Detectorist#1
You won't see a video like this on the go - because there isn't one.

[Orbit]

Hello Detectorist#1
You won't see a video like this on the go - because there isn't one.

https://youtube.com/shorts/eonpEPUYs...ncXUVQ80leiRwr

[pechkata]

Здравей pechkata,

Също така ми е много интересно какво е представянето на Voodoo MD в леки и тежки почви. Имаш ли информация за практиката му с някои разстояния и цели?

This is not a Voodoo video test.

[Detectorist#1]

Hi all,
After many optimizations, I'm ready with new version of "Bipolar PI MD with GB and DD coil". Replacing of many transistors in the control of two power MOSFETs with TC4428CPA eliminates the need of complex setting of the gates control, despite of very different capacitances of the N-ch and P-ch MOS transistors. Using of DD coil really reduce the min delay and allows recovery of a smaller targets in comparison with bipolar project in ITMD3 book. Different connecting of the filters with U4 ensures more good rejecting of the noise after differential integrators. Using of 150 oHm sound sender instead of 32 oHm, eliminates influence of the sound on the work on the rest schematic. The scheme of power board uses two 18650 accus and very popular TP4056 charging module. It is very convenient to use any home USB charger for mobile phones for charging especially if "USB-C only power" connector is used on the box. Attached are the new schemes of the "Main Board" and "Power Bard"

[AhmatAhmatov1959]

Hi all,
After many optimizations, I'm ready with new version of "Bipolar PI MD with GB and DD coil". Replacing of many transistors in the control of two power MOSFETs with TC4428CPA eliminates the need of complex setting of the gates control, despite of very different capacitances of the N-ch and P-ch MOS transistors. Using of DD coil really reduce the min delay and allows recovery of a smaller targets in comparison with bipolar project in ITMD3 book. Different connecting of the filters with U4 ensure more good rejecting of the noise after differential integrators. Using of 150 oHm sound sender in stead of 32 oHm, eliminates influence of the sound on the work on the rest schematic. The scheme of power board uses two 18650 accus and very popular TP4056 charging module. It is very convenient to use any home USB charger for mobile phones for charging especially if "USB-C only power" connector is used on the box. Attached are the new schemes of the "Main Board" and "Power Bard"

HELLO. All this time I looked at the site several times a day, hoping to see the result. I etched the board and soldered the parts, but did not finish, because I realized that I would not be able to fix it. I do not have an electronics education. Today you made me very happy. What is the reaction to gold? Please publish the printed circuit board. Sorry for my English

[algan]

Hi, Detectorist#1, can you write exactly what pulses are coming into the inputs and if possible upload a picture of what the generated bipolar signal looks like with an oscilloscope. Thanks.

[Detectorist#1]

Hi algan,
Attached is the picture from oscope with end of TX pulse and voltage on the coil. Have in mind that two pulses on the coil are sequential - not simultaneously!

[Detectorist#1]

Hi algan,
Attached is the picture with all timings of this project.