The problem of stability and false signals in PI devices

[Faouzi77]

The problem of stability and false signals in PI devices

Although there are many schematics there is a huge difference in the quality of work.
but from technical aspect each part of the device may differ from the other. to audio stage is a very important part in the detector
The problem may seem simple until you have to use coils of different sizes or dealing with heavy soil..
Some designs can be modified and a few details make the difference.
Which makes you ask a question about the most appropriate device to work on
I talked about this topic with a friend.There are some suggestions and ideas
But some suggested raising the subject in the forum
And allow me, Mr Carl, to raise this topic here so we can see some ideas from members or moderators

[Op04]

I would like to add. We still don't have PI project (analog one) that has ground balance in one package with less complexity (I know GS5 pain to build it) all scattered into many deep post painfull to dig and mix them all. Waltr use 3ch on HH2 but It's not analog, I wish someone could make this 3ch in analog for easy implement with added VCO onboard will help a lot. Hehe..too much asking isn't it?

[Op04]

Another thing with cable, most projects done with separate pots outside by cable that will need much time to make, so why not build PCB with potentio placed directly on PCB for efficient time? This is just example

[Faouzi77]

I would like to add. We still don't have PI project (analog one) that has ground balance in one package with less complexity (I know GS5 pain to build it) all scattered into many deep post painfull to dig and mix them all. Waltr use 3ch on HH2 but It's not analog, I wish someone could make this 3ch in analog for easy implement with added VCO onboard will help a lot. Hehe..too much asking isn't it?

You are correct, of course. This is what I mean.... There are many points, and I saw some of the writings. I read in an article by a ivonic while ago. But frankly we need a good start

[Faouzi77]

Another thing with cable, most projects done with separate pots outside by cable that will need much time to make, so why not build PCB with potentio placed directly on PCB for efficient time? This is just example

Surely it will be much better

[Faouzi77]

I want to draw up a plan with some modifications, but frankly I am waiting for friends to participate and put forward some ideas on the topic

[kt315]

just special micro with Walsh Function can decise all problems with the stability. anyone with deeply mathematical base in digital filters can give you the chance.
analog PI does not.

[Faouzi77]

just special micro with Walsh Function can decise all problems with the stability. anyone with deeply mathematical base in digital filters can give you the chance.
analog PI does not.

Yes, this is what happened with analogue devices

[Faouzi77]

So we want to see some suggestions for talking about the topic

[Alexismex]

The design of the printing circuit is one of the key for suprim instability .....see Design board of Eric Foster!