Great super D coil for IGSL

[piramida]

I made several tests with the TX oscillator by increasing the voltage. With 8v amplitudes it is 0.9v, with 12v is 1.2v then I put 16v but the amplitude remained 1.2v. Looks like this is the limit for the oscillator.
Maybe another oscillator should be made that can have a higher amplitude because it looks directly into the depth.
Is there any idea for an oscillator?
Excuse me for bad English

[MartyJ1963]

Hiya Pyramida,,,,Very Nice neat job on the coils you made!,,,How did you bind your coils? I see you used cotton to tie them,,did you glue them as well? Regards,,,,Marty

[piramida]

Thank you, Marty
the thread is made of cotton and I bind as the old one has explained for dd coil and coils always with a super glue that can be bought in the Chinese store (50 cents in serbia), which is great for these things. The 5 gram box is enough for the TX and RX coils. It is flexible enough to allow the shape of the coil to be corrected but it is also strong enough to keep the bells in place.
The cotton thread is good because it absorbs the glue.

[MartyJ1963]

Hiya Pyramica. I use the same method on my single strand wire coils too. I've still not finished my Super DD coil for the PI yet,,too many chores to do,,lol. The coil I made for the Mirage PI has 2 x RX Coils, each have 150 uh, and the TX is 300uh. I used 0.7mm to keep the resistance close to 1.4 ohms. I have yet to add parts to the Mirage so it will accept a balanced coil,,,,Hopefully I will find time soon to complete it. I'm looking forward to reading more of your posts on the progress of your coil. Good luck. Regards,,,,Marty.

[Bhathu saaii]

Hiya,,,I read somewhere that a Russian guy made quite a few of these Super DD coils for his Minelab detectors,,,I've been looking for the posts and videos but can't find them. They are on one of the Russian Metal detector forums. Marty

thanks a lot marty