Whites Surf PI schematic

[nelson]

Hi, in my case for a 22 mm copper coin on air, 26 cms.
Regards
Nelson

what are the results from the surf-master detector?
depth?

[cordius]

How Cordius.
What kind of cable did you use btw coil and circuit.
In my case i used ordinary electric cable with good results. But last weekend i use rg-58 coaxial cable, and results wehe to bad.
By the way this is my third surfmaster i have done with good results.
Kind regards
Nelson

Hallo Nelson, I use RG 58 and normal cable, there are not difference of results in my home experiment in the old version of the circuit that you know.
Next days i finish mounting the new pcb, today i have mounting the resistors and same capacitors, there are same mistrake in the new pcb. Add two pad for J7 bridge and J4 bridge.

[lari]

How Cordius.
What kind of cable did you use btw coil and circuit.
In my case i used ordinary electric cable with good results. But last weekend i use rg-58 coaxial cable, and results wehe to bad.
By the way this is my third surfmaster i have done with good results.
Kind regards
Nelson

what are the results from the surf-master detector?
depth?

[nelson]

How Cordius.
What kind of cable did you use btw coil and circuit.
In my case i used ordinary electric cable with good results. But last weekend i use rg-58 coaxial cable, and results wehe to bad.
By the way this is my third surfmaster i have done with good results.
Kind regards
Nelson

Good work Kuraja
This is my final version of surfmaster.
There is only one pot tresh
the disc pot is setting onbord trimmer R25 50K and bridge 100K pot for full performance.
Coil is 20 cm diameter.

[cordius]

the copper area is isolated to the track 0,5 mm space.

[Qiaozhi]

These links are not among the good unless they are connected to ground

why not? the full zone are non connected, are isolated to the track
excuse my english.

Hi Cordius,

I think what lari is saying is that you have flooded the board with an isolated net instead of ground. Looking at your image it seems he is correct. When performing a copper pour it should be associated with ground (0V) and you should remove all the isolated islands. However, I would think that your board will be ok as a prototype.

[cordius]

why not? the full zone are non connected, are isolated to the track
excuse my english.

[lari]

I hope it work. here is new pcb

These links are not among the good unless they are connected to ground

[cordius]

I hope it work. here is new pcb

[erolunall]

Hello

Transistor BC337 reversed

[geminis74]

yes, I guess you're right, then black has made the same mistake, by the way that speaker (ohms) is recommended, thanks.
PS: tomorrow I prove and published results.

[Waikiki_Sweep]

!!!! Transistor Q6 (BC337) has been !!! INSERTED WRONG !!! ON oxygeno07 layout.

someone has been surf PI oxygeno07.
mine keeps ringing, with or without coil and heats the Q6 (BC337) someone has any idea because it can be.
thanks.

!!!! !!!! Transistor Q6 (BC337) has been !!! INSERTED WRONG !!! ON oxygeno07 layout.

Please remove it then turn on 180 degrees and install back. Or better
use new one because it possible has been burned.

FROM:
___
/ *| Emmiter
|* | Base
\_*| Collector

TO:
___
| * \ Collector
|--*| Base
|_*/ Emmiter


To be sure you can check pinout of BC337 here:

http://www.fairchildsemi.com/ds/BC%2FBC337.pdf

Who have more 1 euro coin stst to compare oxygeno07 device results?
I hope I will have my own stat soon.

[geminis74]

thanks Black

[black]

HI. I'M TURKISH. MY SURFMASTER PROJECT VER. 1.1

[geminis74]

can put the LAYOUT file through.