TL12000

[haylaz0036]

I'm asking you, I'm looking for a TL12000 detector lay file, please help me. I made three different files from the internet, but I couldn't run them.

[roshik]

hi
The circuit schematic is wrong, but the parts are correctly placed in the printed circuit board.
What is your problem exactly?

[daluka]

Here you have a gerber file.

[GeoMax]

Hi
The schematic is NOT wrong because it is NOT based on the same PCB or the component placement file you posted above!!! Please READ the information on the schematic!
After reading the notes you will know on what basis this schematic was created. Also note that the schematic file name called "TL12000x" this is also a hint that it is not the "TL12000" schematic.

Actually there are many more TL12000 schematic and PCB versions of what is posted to be found in the Internet. The above schematic is the most reasonable schematic where errors and mismatch between all circuits were corrected. In order to get a working TL12000 you need to make a new PCB from this schematic. NON of the PCB's which are floating around the Internet are matching 100% this schematic. I analysed all available TL12000 schematics from the Internet and all schematics I found had some errors or circuit design issues!!! Some schematics might work (some how) but they still contain circuit design issues.

GeoMax

[haylaz0036]

I found a new lay file, I did this, but it still works, the potentiometer is on, 555 is on, I don't understand - 15 7809 + 9volt potentiometer is connected, why?

[haylaz0036]

Dear Max, do you know a working PCB? I need it very much. I made the PCBs I found on the internet, but they did not work.

[haylaz0036]

Dear Max, since there is sampling in this circuit, you can erase the metal you want. It is easy to make it analog, of course, if it works, the distinction is good. I have never seen another machine like it.

[haylaz0036]

Dear Daluka, I have watched your videos, I am asking you for PCB PDF, not Gerber, and I would like to try your PCB. Best regards.
[email protected] OK

[daluka]

Dear Daluka, I have watched your videos, I am asking you for PCB PDF, not Gerber, and I would like to try your PCB. Best regards.

Not my PCB. The author of PCB is Mohammed. I don't know if the design is correct.
TL12000_Mohammed.pdf

[GeoMax]

Hi haylaz0036

no, I do not know a working PCB layout. And I never made a PCB for the schematic as well. I re-drew the circuit only for reference.

[GeoMax]

Dear Max, since there is sampling in this circuit, you can erase the metal you want. It is easy to make it analog, of course, if it works, the distinction is good. I have never seen another machine like it.

If you maybe refer to the IC LF398N, this is only a dedicated Sample & Hold IC nothing more. With that IC chip you can not "erase the metal you want". If you want to "erase metal", better have a closer look at the GoldScan 2, 4 or 5. That detectors can discriminate "unwanted metals" and on top they have all a ground balance circuit.

[haylaz0036]

Thank you very much for your help, I have a long road ahead of me. Gold scan 2.4.5 Which one would you recommend?

[GeoMax]

Hi,

I would recommend building Goldscan 4 as it is well documented on the Geotech forum and you will get a lot of help from other members who have built it before. The For the GS4 you probably find a working layout and GS5 is a little bit too complex for a beginner.

[roshik]

I found a new lay file, I did this, but it still works, the potentiometer is on, 555 is on, I don't understand - 15 7809 + 9volt potentiometer is connected, why?

Hi
Is it possible for you to upload a clearer picture of the fiber circuit?

[haylaz0036]

Mr. Roshik here is the pdf