Delta Pulse

[Belief]

Hi all

I need metal detector for 5 meter detection depth

pelease guide me.

Thanks.

Iman boroumand

[Jose]

thanks diminute for the led informations!!

I cheked the voltage and the +E/-E is about 3.56 V :s I don't know if my NE556 is working correctely, that's what I suspect

Regards

The tension "-E" "+ E" should be about -10.6 Volts, to check the diodes 1N4142 (BD8, BD9)
Jose

[Belief]

Hi all

Is there anybody to know that how calculate the

Formula of making coil ?

Thanks .
Iman Boroumand.

[Belief]

Hello Belief
I use flat cable 18 drivers that I provided elevator maintenance technicians, the diameter is 1 mm. approximately, the total resistance is about 2 ohm.
I use MD damping resistance of 680 ohm, in the 1x1 meter coil added two parallel 2.2 K ohm (1.1 k ohm). The operation is stable.
The scheme without modification as shown in previous posts.
Sorry I do not speak English.

Hello Jose

I have some question

1 - which frequency is your delta in found power mode (300 HZ or 120 HZ)

2 - wich part list did you use ?

3 - How much is output voltage of delta in full power mode ?

4 - I want to know that your 1*1 coil has how much uH ?

5 - How mouch is the maximum depth detection with 1*1 coil

( metal dimensions) ?

Thanks...

[Jose]

Hello Jose

I have some question

1 - which frequency is your delta in found power mode (300 HZ or 120 HZ)

2 - wich part list did you use ?

3 - How much is output voltage of delta in full power mode ?

4 - I want to know that your 1*1 coil has how much uH ?

5 - How mouch is the maximum depth detection with 1*1 coil

( metal dimensions) ?

Thanks...

Hello Belief
Tests in the video were made with 450 Hz
The component values are according to the diagram on page 33 of the forum with some modifications I mentioned earlier.
I have no instrument for measuring the coil uH
Do not perform tests of maximum detection distance.
The power is 12 volts
For the original Delta Pulse frequency is 100 or 120 Hz Roll 1.2 * 1.2 meters and 300 Hz Roll 45 * 45 Cm.
My advice is to experiment with smaller coils, then when you are familiar with your detector may attempt to modify the frequency and the delay time to obtain the maximum benefit of its MD.
Greetings

[porkluvr]

Is there anybody to know that how calculate the
Formula of making coil ?
Iman Boroumand.

One of the best coil calculators can be found in the MiscEl program (try Google). It has lots of different coil options.

There was a bug in the old version and it would sometimes not accept inputted data even when the instructions were followed. A newer version is out so maybe that has been fixed. Use a leading '0' in a number like 0.254 to avoid problems.

[Belief]

Dose your delta has sensitivity to gold and copper ?

Thanks ...

Iman boroumand.

[salim]

hi
can you help me to determinate the value an referance of this part im confused

thanx br!

[homefire]

Here you go!

[salim]

hi finaly i finished my delta pulse my first home-made detector but is not working

1- i have contuned bip with or without coil
2- i used 22k instead 20k and 49k instead 50k
3- i havent 8.2v in zener diode
4- i havent oscillo and for multimetre i have to connect coil for mesurement ?
5- im using 12v 1.3a thant is good ?

please help me to solve my problem sorry for my bad english

[miki73]

Werry nice..

[Max]

hi
can you help me to determinate the value an referance of this part im confused

thanx br!

last 3 are:

15nF (or 0.015uF or 15000pF)
1.5nF (or 0.0015uF or 1500pF)
1nF (or 0.001uF or 1000pF)

[geminis74]

Salim
found that the LEDs are in their correct position

[salim]

hi
thanks for all for help my delta pulse work very well i have just to connect tune contact for coil im using degoss coil for 15" pc screan

[kt315]

salim, what you know about precision resistors?
are you need in precision information about the resistors, learning course etc.?
have you read all this thread in details?