2 boxxxx :)

[chemelec]

I have found the Error I made on the Board and corrected it, so It Now works good.

Without actually making Full Size Coils, I would say its better than any other designs I have tried or designed myself.

I will now Print off this new corrected board and assemble and test it, Just to be sure.

One thing I didn't realize till now is Speaker operation is Not Practical. The Tone Changes are too Suttle to be heard from a speaker.

However, Headphones work well, so I will add pads for a Current limiting Resistor on the board.
This is the best way to protect against damage when using headphones.

Even though I will Post the PCB Design and my final schematic, I realize not all persons can make there own PCB, So I would like to know, All the persons who are interested in getting a board from me.

Take care.....Gary

[goldfinder]

TR PCB

Hi Gary,
Count me in for 2 TR PCBs. When they are ready I'll communicate w/ you via email for shipping and costs.

Best Regards,
Goldfinder

[kt315]

hi Gary. some experiment you can do. if you will change of the schematic to what I did image here you must get good acoustic effect like to microphone howling.
regards

[Shahab]

Does TR Locator work in BI mode?

[chemelec]

hi Gary. some experiment you can do. if you will change of the schematic to what I did image here you must get good acoustic effect like to microphone howling.
regards

I Already Get That ringing effect.

The PCB is now revised and it works fine.

I will post all the info as soon as I get some time to scan the PCB and Re-do the Schematic, Showing the parts I Used.

Possibly I'll post a Picture of it Tomorrow.

I hope to also Re-label the part numbering and give a parts list.

This has been difficult, because I also typically get about 30 emails a day. There aren't enough hours.

[kt315]

Does TR Locator work in BI mode?

yes, it is Transmitter-Receiver detector. it must be have mechanically Induction Balance position adjustment of the orthogonally disposed coils.

[Shahab]

Thanks for your answer,KT315.

But i don't understand very well.Which coil form?Which coil form?

[Qiaozhi]

Thanks for your answer,KT315.

But i don't understand very well.Which coil form?Which coil form?

It's a 2-box, and is the same as your TR image. The IB coil form is known as OO (double O) and is an alternative to the more usual DD (double D). This last type is used on the Nexus detectors.
http://www.nexusdetectors.com/

[chemelec]

Here is My Revised Schematic, Including the Parts List, As I built it.

http://www3.telus.net/chemelec/Proje...ed_T-R_Sch.gif

PCB and Parts Overlay to come soon.

Maybe today, but its my Birthday, 62

[Qiaozhi]

Here is My Revised Schematic, Including the Parts List, As I built it.

http://www3.telus.net/chemelec/Proje...ed_T-R_Sch.gif

PCB and Parts Overlay to come soon.

Maybe today, but its my Birthday, 62

Happy Birthday Gary

[Geo]

Hi Gary. From my heart "happy birthday" .

[nelson]

Happy birthday

Hi Gary, may be we know each other only by the forum, but always is good to celebrate the day that we came to this world.
Happy birthday, and i wich you that many years come to celebrate.
regards
Nelson

Here is My Revised Schematic, Including the Parts List, As I built it.

http://www3.telus.net/chemelec/Proje...ed_T-R_Sch.gif

PCB and Parts Overlay to come soon.

Maybe today, but its my Birthday, 62

[kt315]

Happy Birthday To You, Gary! All The Best!

[Esteban]

Happy birthday!!!

[Leto]

ALL THE BEST...

Joining here to wish you all the best...