2 boxxxx :)

[chemelec]

Joining here to wish you all the best...

THANK TO ALL!!!!!!

HERE IS THE COMPLETED ARTICLE:
(My TEST SET-UP, PCB, SCHEMATIC AND PARTS OVERLAY.)

http://www3.telus.net/chemelec/Proje...-R-Locator.htm

Nothing better to do on my Birthday, but this for you all.

Hopefully No Errors on it.

[chemelec]

For those persons interested in POSSIBLY Getting a Free Board, Send mean Email along with a Number between:
"1 and 1000".

You MUST PUT the words "Electronic Free TR" in the Subject Line.

I will put those numbers in a container and Draw One to get a winner.

Draw Date in about One Week.

I Will NOT be answering any of these Emails Directly, but I will Post the Winner Here.
Any Enquires to Buy a board from me, Must have the words Electronic and PCB in the Subject Line.
And Please Tell me What Country you live in.

Just for Curosity, I tried a 50Khz crystal in this circuit.
Works Well also. See Picture.

Sorry For the Slightly LARGE Crystal. Its a Dual crystal of 32Khz and 50Khz, +/- 0.001%. out of a Watch Timing Machine for OLD Mechanical Watches.

By the way, Typical Non-Resonance Current Draw of this circuit is about 90 mA. with a 15 volt supply.
Sorry, Forgot to Look at it When I had it in Resonance one time.

Enjoy, Take care...Gary

[nelson]

TR locator

I hope celebration was nice and with lovely gifs from your relatives.
Also i think most of people like me that are waiting for TR locator re-design are also happy with this gif that you send to us.
Gary thank you very much and tomorrow i ll get some parts that i need to begain a new pcb, and of course i ll keep in touch on the forum to know from others what are the results on the field with this detector.
Regards
Nelson

THANK TO ALL!!!!!!

HERE IS THE COMPLETED ARTICLE:
(My TEST SET-UP, PCB, SCHEMATIC AND PARTS OVERLAY.)

http://www3.telus.net/chemelec/Proje...-R-Locator.htm

Nothing better to do on my Birthday, but this for you all.

Hopefully No Errors on it.

[detectoman]

gary happy birthday to you, and very much years most for you, and many tkanks for your amiability and nice help to detection friends
best regards
detectoman

[Shahab]

LATE

Gary,happy birthday to you & thanks for your post.

I built the PCB & soldered the components.Please help me to make the coils.

[detectoman]

hellooooooooooo sir chemelec
yo no se el futuro que pudieran tener las investigaciones de ustedes, sobre el sevzirfo y en esas modificaciones que se estan haciendo, pero si se que es un proyecto que tiene grande vision, y que puede salir algo mejorado al prototipo anterior, este proyecto esta en mas buenas manos" basta decir que tambien bajo la supervision del maestre" kt315 y desarrollandolo usted chemelec, esto podria ser de lo mas avanzado, hay ingenieros y hay tegnica, y hay personal
en cuanto al lm324 he oido que hay otro integrado mejor" que ese, tlo74 y no se si se podria aplicar aqui, y en cuanto a los pcbs de chemelec son muy sencillos y dinamicos, y tanto geo como kt315 podrian aun supervisar mas esto y me gusto el diseño moderno, que presento creo que quazy o ivconic, en donde dan las medidas, pues es un detector que promete, ya veremos
un saludo hermanos de hooby
detectoman
hellooooooooooo to sir chemelec I not the future that they could have the investigations of you, on sevzirfo and in those modifications who estan yourselves doing, but if that it is a project that has great vision, and which something improved can be left to the previous prototype, this project this in but good hands "is enough to also say that under the supervision of the master" kt315 and developing it you chemelec, this podria of but to be advanced, are engineers and are tegnica, and are personnel as far as lm324 I have oido that is better integrated other "than that, tlo74 and not if podria to apply aqui, and as far as pcbs of chemelec they are very simple and dinamicos, and as much geo as kt315 they podrian even to supervise but this and I please me design modern, that I present/display I believe that quazy or ivconic, in where measures give, because it is a detector that promises, we will already see a greeting brothers of hooby they detectoman

[chemelec]

hellooooooooooo sir chemelec
yo no se el futuro que pudieran tener las investigaciones de ustedes, sobre el sevzirfo y en esas modificaciones que se estan haciendo, pero si se que es un proyecto que tiene grande vision, y que puede salir algo mejorado al prototipo anterior, este proyecto esta en mas buenas manos" basta decir que tambien bajo la supervision del maestre" kt315 y desarrollandolo usted chemelec, esto podria ser de lo mas avanzado, hay ingenieros y hay tegnica, y hay personal
en cuanto al lm324 he oido que hay otro integrado mejor" que ese, tlo74 y no se si se podria aplicar aqui, y en cuanto a los pcbs de chemelec son muy sencillos y dinamicos, y tanto geo como kt315 podrian aun supervisar mas esto y me gusto el diseño moderno, que presento creo que quazy o ivconic, en donde dan las medidas, pues es un detector que promete, ya veremos
un saludo hermanos de hooby
detectoman
hellooooooooooo to sir chemelec I not the future that they could have the investigations of you, on sevzirfo and in those modifications who estan yourselves doing, but if that it is a project that has great vision, and which something improved can be left to the previous prototype, this project this in but good hands "is enough to also say that under the supervision of the master" kt315 and developing it you chemelec, this podria of but to be advanced, are engineers and are tegnica, and are personnel as far as lm324 I have oido that is better integrated other "than that, tlo74 and not if podria to apply aqui, and as far as pcbs of chemelec they are very simple and dinamicos, and as much geo as kt315 they podrian even to supervise but this and I please me design modern, that I present/display I believe that quazy or ivconic, in where measures give, because it is a detector that promises, we will already see a greeting brothers of hooby they detectoman

Hi Detectoman, Your English Transulation is Difficult to Understand.

And My name is "Gary".
Not Sir and Not Chemelec.
Chemelec was my Company Name, Before I retired.

As to using a More Modern IC such as a TL084, I really Doubt there would be any Advantage because of the LOW Frequency (2,048Hz) and relativel Low gains that are used in this circuit.

But its not a Problem if you want to use that TL084.

Mostly I was just interested in developing a Circuit board for this, so others can build it more easy.

Take care.....Gary

[nelson]

TR locator PCB

Hi Gary.
Here i m showing my PCB for TR locator.
Tomorrow i ll do holes on the board and after that i ll start to place components on it.
Regards
Nelson

Hi Detectoman, Your English Transulation is Difficult to Understand.

And My name is "Gary".
Not Sir and Not Chemelec.
Chemelec was my Company Name, Before I retired.

As to using a More Modern IC such as a TL084, I really Doubt there would be any Advantage because of the LOW Frequency (2,048Hz) and relativel Low gains that are used in this circuit.

But its not a Problem if you want to use that TL084.

Mostly I was just interested in developing a Circuit board for this, so others can build it more easy.

Take care.....Gary

[chemelec]

Hi Gary.
Here i m showing my PCB for TR locator.
Tomorrow i ll do holes on the board and after that i ll start to place components on it.
Regards
Nelson

Looks Good.

NELSON, By the way, You are the ONLY PERSON to try for a FREE BOARD, So Far.

So Probably you will get another one.

[detectoman]

excuseme mr, gary, ok i undestand my error excusme excuseme

gary, say me please, my question is ? if is possible one detector can work very well, whit your signal, box to box (in air),whit mesure 10 metres distance , or can have noises to ground? or other problems? what is the limite or maxime distance for one detector two boxs in air?
is these distance extreme, only for radiocomunications?
for your attention thanks

detectoman

[Shahab]

Hi Gary.

I built TR PCB & soldered the component.But i can't get the photo of it because i have NOT digital camera.

I wish that somebody help me to:
1.Building coils
2.calibrating the circuit

Also i coudn't find mc14520 & .2n & .4n aproximately
I used gd4520b & .22n &.22n*2 MKT.

Please answer me.

Thank you.

[kt315]

excuseme mr, gary, ok i undestand my error excusme excuseme

gary, say me please, my question is ? if is possible one detector can work very well, whit your signal, box to box (in air),whit mesure 10 metres distance , or can have noises to ground? or other problems? what is the limite or maxime distance for one detector two boxs in air?
is these distance extreme, only for radiocomunications?
for your attention thanks

detectoman

this is the noise, this is the problems, this is the maxime distance etc. - WHAT DO YOU WANT, detectorman?! SIMPLY DO IT FOR SELF AND YOU WILL GET UP ALL YOUR ANSWERS!!!
still one photo from Ivan's site doing more objective the subject.

[nelson]

TR locator

Hi Gary.
Ok is nice to heard that about my PCB. This was transfer to a laser printer and after that i use a combination of two chemicals to remove copper. The result was a nice PCB.
About the free board, i whant to thank for that. Indeed if i have success with this detector i ll make another one to go threasure hunting with my son.
The only think i can´t get by now is the meter (hard to find here). But Geo tool me that this detector will work without it.
Regards
Nelson

Looks Good.

NELSON, By the way, You are the ONLY PERSON to try for a FREE BOARD, So Far.

So Probably you will get another one.

[nelson]

TR locator coils

Hi Shahab, here are details of TR locator coils.
I m also building this MD, so when you get yours, let us know test results.
Regards
Nelson

Hi Gary.

I built TR PCB & soldered the component.But i can't get the photo of it because i have NOT digital camera.

I wish that somebody help me to:
1.Building coils
2.calibrating the circuit

Also i coudn't find mc14520 & .2n & .4n aproximately
I used gd4520b & .22n &.22n*2 MKT.

Please answer me.

Thank you.

[chemelec]

Hi Gary.

I built TR PCB & soldered the component.But i can't get the photo of it because i have NOT digital camera.

I wish that somebody help me to:
1.Building coils
2.calibrating the circuit

Also i coudn't find mc14520 & .2n & .4n aproximately
I used gd4520b & .22n &.22n*2 MKT.

Please answer me.

Thank you.

Hi, I suggest you go to my Website to the Calculators.

http://www3.telus.net/chemelec/Calcu...alculators.htm

Just use the "Revised Inductance Calculator" to determine the winding for a 15 mH Coil of the diameter you want.
Any wire gauge between 24 and 28 AWG should be fine.
Possibly 8 to 16 Inch Diameter.

The Coil really isn't that critical because you need to tune it with the Capacitors. That is the More Difficult part.

My Coils were really Small, But I'm not actually interested in making a Fully Working detector.
Just trying to help you guys out.