Delta Pulse

[Jose]

Green LED lights up whenever.
Red LED when the battery voltage descends near 10 volts.
4538 generates the first and second sample, the width of the samples is 50 usec in both cases.
Try to explain what little I understand. These are approximate values, and I mention it for information.
556 generates the pulse of adjustable transmison alrrededor of 300 Hz with a pulse width also adjustable, which is not the maximum value, I adjusted between 100 and 200 usec.
The first sample pulse is generated after the transmission TX, this is adjustable between 30 and 150 usec. with a 4538.
The second sample is generated with another 4538 from 100 to 700 usec.
4066 are the keys, some are used for integration of samples and other functions I have not quite understand.
Maybe someone on the forum, can give a better explanation of the functioning of the Delta Pulse therico.
Regards, Jose

[amel]

sorry for more question please help me to understand

i did'nt know how circuit work such what compare pulse length and reflect pulse in the circuit what function of 4538 and 4066 ic sorry for question but i can't understand ?

[pigeon]

IRF740 IS HOT

HI

I HAVE BUILD DELTA2 BUT HI NOT WORKS THE IRF740 IS VERY HOT MORE DOESN'T NOSE

BEST REGARDS
THANK YOU

P

[amel]

Hi Amel
Check the zener and transistor turn on the LED display.
The function of damping resistance is to avoid oscillations in the coil, its value is critical and depends on the technical characteristics of the coil, whether or not IRF740 and the diode between the inductor.
You have to experiment with different settings to achieve better sensitivity.
Shielding is usually not necessary in the Delta of the pulse, which was not designed for low delays.
Anyway, I can recommend Scotch tape N24, if you want to shield the coil.
I do not work with aluminum tape or graphite.

refers to
Joseph

thanks jose i will check ( zener and transistor turn on the LED display) but this make any error in circuit or just for display ?
i did'nt know how circuit work such what compare the pulse and reflect pulse in the circuit what function of 4538 and 4066 ic sorry for question but i can understand ?

[Jose]

Hi Amel
Check the zener and transistor turn on the LED display.
The function of damping resistance is to avoid oscillations in the coil, its value is critical and depends on the technical characteristics of the coil, whether or not IRF740 and the diode between the inductor.
You have to experiment with different settings to achieve better sensitivity.
Shielding is usually not necessary in the Delta of the pulse, which was not designed for low delays.
Anyway, I can recommend Scotch tape N24, if you want to shield the coil.
I do not work with aluminum tape or graphite.

refers to
Joseph

[amel]

i build delta pulse and i have problem

hi
first problem that the green and red led are light when connect 12 v
what the problem and need help to explain the function of damping resistor the value i use is 680 ohm
my coil is 31 turn with 0.4 mm and 19 diameter ask can i make shielded with aluminium foil and plastic case

i wait to help my and thanks

[szucs_g]

YES!

[Jose]

Hi pigeon

yes this pcb and componnents are correct
it work very well
Its hex limited in on/off only
i solved this counter in pim-1 whit hex manipilation
it is not very important
------------------------------------------------
ill try to make another delta pulse pcb and i can start again


best regards

freedan 3d

Hello Freedan3d
The card "discriminator rar". Correct?
thanks
Jose

[freedan3d]

Can LCD be added to any delta pulse .I have a delta pulse and would like to add lcd

Yes growdude it possible
which model yo use ?
you can find that points p1 p2 p3 p9 and p4 p5
connect its to lcd

good luck

Freedan3d

[pigeon]

Hi pigeon

yes this pcb and componnents are correct
it work very well
Its hex limited in on/off only
i solved this counter in pim-1 whit hex manipilation
it is not very important
------------------------------------------------
ill try to make another delta pulse pcb and i can start again


best regards

freedan 3d

HI FREEDAN3D

THANK YOU VERY MUCH

GOOD LUCK
BESR REDARDS

[freedan3d]

HI

I NOT INTERESTED IN HEX I WAN TO NOW IF THE PCB AND COMPONENTS ARE CORRECTE

THANK YOU

BEST REGARDS

Hi pigeon

yes this pcb and componnents are correct
it work very well
Its hex limited in on/off only
i solved this counter in pim-1 whit hex manipilation
it is not very important
------------------------------------------------
ill try to make another delta pulse pcb and i can start again


best regards

freedan 3d

[growdude]

Lcd

Can LCD be added to any delta pulse .I have a delta pulse and would like to add lcd

[pigeon]

PI really do not think the detectors are renowned for their skills for the selection. The depth sensitivity is good.
I do not think DP - LCD selects any metal. The original HEX file can not run it. Replaces the mechanical indicator (status bar). Works for me, but I do not expect her selection of metal.

HI

I NOT INTERESTED IN HEX I WAN TO NOW IF THE PCB AND COMPONENTS ARE CORRECTE

THANK YOU

BEST REGARDS

[kt315]

yes i do

check R44 and T9.

[szucs_g]

Apparently, the discriminator module "discriminator rar" published more ago, is a demo that can be executed 200 times, as can be seen in the Turkish forum.
The bars give a rough idea of metal detected.
regards
Jose
http://www.teknolojiekibi.com/index1.html

Me too it appears on the LCD. (Without welcome words)

http://www.youtube.com/watch?v=-RYyT20ZLV0

http://www.youtube.com/watch?v=EUIdAg1ztOk

It seems to me that this is not the same as the Turkish solution. I think it's no discriminator.