Delta Pulse

[Jose]

Hola Belief
Excellent work
I use R 51 and C32 (1 ohm and 4700 mf) and a small sink for IRF 840, I see in the picture.
P3 20K I use 10 K to 60% (approximately 120 microseconds) it seems that this value is the good compromise between power, minimum power consumption and moderate temperature IRF 840.
Coil 1 * 1 meters
This is my experience but not if it is right.
Flat cable as shown in the photo, I got the best return.
With less than 17 or 18 laps, the behavior of Delta Pulse is unstable.
With over 4 ohm resistors reduces the sensitivity.
I think we can try to type workshop with driver 18 X 1 mm.
You can see another example on page 10 post 239, this same forum.

Sincerely, Jose

[rajesh]

delta pluse

hi nick i'm wish to
building a delta pluse can you recmond me it or other actually i have hh that working fine but less sensitivity. i need a bear size metal detect at five feet .....rajesh

[WM6]

Detection depths.

[ATTACH]9739[/ATTACH]

Excellent Belief, but what for silver coin 1/3 cm (mean 3,33 mm) exist there? I never seen such miniature coin.

[Belief]

Detection depths.

[Belief]

HI Jose Nice VID

Cable flat is not available right now.

Please tell me how can i make it

Iused 0.50 Wire LIV and 13 turn And 4 Ohm for 1*1 . has no sense and

Irf 840 is very overheated .

pleas guide me .

THanks.

Iman Boroumand.

[Belief]

Hi Jose
I used it

[salim]

hi can someone make a simple side pcb br!

[WM6]

Hello Jose

140 cm for a coke .I did dot hear such distance. This forum begining a question about 45 cm for same coke.

Erol

Hi Erol, maybe you think 45cm for coin not for coke?

[Jose]

Hello Jose

140 cm for a coke .I did dot hear such distance. This forum begining a question about 45 cm for same coke.
Could you give a test video ? if it is so what is different on your Delta Pulse?

Best Wishes
Erol

Prueba Delta Pulse

http://www.youtube.com/watch?v=2jg0J4F-kdM

Saludos Cordiales.

[Belief]

HI Jose

Thanks for information

Best regards.

Iman boroumand.

[Jose]

Hello Jose

140 cm for a coke .I did dot hear such distance. This forum begining a question about 45 cm for same coke.
Could you give a test video ? if it is so what is different on your Delta Pulse?

Best Wishes
Erol

Dear Erolunall
I will try to prepare a video for next week.
The soda cans as are preserved, are easy to spot as iron, remember that these are ideal conditions and with maximum profit at the controls of MD and optimal adjustment of delay time.
Do not make major changes in the circuit, use lf357 (LF356 noisy).
TX power potentiometer 20 K, I use 10 K for IRF840 not overheat the 60% (approximately 120 microseconds).
Delay time from 20 to 30 microseconds, reducing training 1.5 na 1 n if necessary, otherwise as indicated in the scheme.
Good PCBs for minimum phase noise preamps (lf357)

Sorry do not speak English
Best regards

[erolunall]

Hello Jose

140 cm for a coke .I did dot hear such distance. This forum begining a question about 45 cm for same coke.
Could you give a test video ? if it is so what is different on your Delta Pulse?

Best Wishes
Erol

[Jose]

HI Jose

Would you please send me your 1*1 coil's picture ?

Thanks.

Iman boroumand.

Coil Picture

[Noemio]

400 Hz timings

Maybe I am wrong but I've not been able to find this information on this 3D.
Anybody, kindly, could post here timings for a DP working (tested) at 400 Hz? Thank you in advance.

[Jose]

HI Jose

Would you please send me your 1*1 coil's picture ?

Thanks.

Iman boroumand.

Yes, I prepare the photos. A little time please.

Best regards.