Delta Pulse

[betobrambi]

gracias José

Podemos hablar en español?

GUsto conocerte y gracias por ayudarme.

Dices que debe parpadear constantemente? El Led verde sólo queda prendido como un foco de casa. ¿Qué pude haber hecho mal? ¿O que pieza no funciona?

Por otro lado, en el sonido, no lo hay... ¿debo colocar un potenciometro para volumen?
o ¿qué debo hacer José para colocar la resistencia 1k?

Gracias de nuevo por tu ayuda.

Soy de Mexico

Heriberto

Te envio un fuerte abrazo

[Great_Alex]

thanx jose and what about reverse audio response

Betobrambi it seems you should test every thing from beginning

first check the 1n4001 D7
then you should check to have signal in some Test points
you can use of a speaker for testing that u have pulse or not ; when one leg conneted to -12v battery use another leg of speaker to check the pulse signal !! strange way but works.

check these places for pulse signal :

check all diodes by a multimeter

check the voltage pin 1 ic 6 and Batt +12v it should be 5.3 volt


and check these place for pulse if you don't have pulse there there is a problem

Pin 5 of 556 Ic1
pin 9 of 556 ic1

pin2 of lf357 ic4
pin6 of lf357 ic4

pin 6 & 10 of 4538 ic 2
pin 6 & 10 of 4538 ic 3

pin 1 & 7 of tl062 ic 5
pin 1 & 7 of tl062 ic 7

test these maybe you find where's problem

[betobrambi]

thanks Great Alex

I am desirable knowing oneself and thanks to help oneself.

do You say that he must blink constantly? The bawdy Led only becomes fastened like a focus of house. ¿What may I have made wrong? ¿Or that the piece does not work ?

In addition, in the sound, he does not have it... ¿must I place a potentiometer for volume?
or¿What must I do to invest resistance 1k?

Great Alex. thanks for help me

do I owe check with meter the pins out of every transistor?

I do check all and inform you the aftermath

I do not know if I will be able to, because I am not an expert .

I will change transistors for new

¿is This possible?

Friendly thanks



Thanks again for your help.

I come from Mexico

Heriberto

Te envio un fuerte abrazo

[betobrambi]

my friend Great Alexis

These two diodes ( 4148 ) emit sound when I put multimeter to him... ¿must I change them?

The other ones do not emit sound in multimeter.

The 4001 does not emit sound... ¿That's right?

If a piece emits sound, ¿ it Broken?



thanks Alexis for your help me

best regards

Heriberto

[Jose]

Hello Great Alex

if i place a metal near coils the signal increase rapidly then the signals fade out and the device become retune itself ( i still have the peice of metal near the coil and the signal fade out) , it's like auto tracking mode !!

first of all is it normal or my DP has a problem , any body has a video of DP when a metal object remain in a fix distance to DP coil ?

and this auto tracking make the detector response very weak on deep targets cause it's speed is very high . i built a switch between T7 and R29 for this problem but i need changing it speed not to remove auto tracking at all.


the description the previous paragraph is normal in the operation of the Pulse Delta, and corresponds the "automatic mode."
You can try the "manual mode", then the Delta Pulse behavior is similar to other MD PI.
José

[Jose]

Hello Betobrambi
The volume control knob is the last right, according to the picture of the PCB.
The value is 100 ohm, not 1K as I said before. I apologize.
You may 1N4148 diodes are shorted by what you told us.
Out of respect for members of the forum, I do not want to write in Castilian.
You can send me a private message Castilian if you wish, and try to help within my means.
José

[Great_Alex]

Hi Jose

changing R27 or C21 changes the auto tracking time but it change the metal detector max depth according by my tests .

i think the soloution must be at T7 (Maybe)


Mr Betobrambi

I don't know what kind of multi meter you have
first you check a diode in out of circuit to find how to work with your multimeter.
the diode must have some resistance in one way and no current in another way
when it short curcuit and the multimeter beep i think you should change it

please tell the diode no according the schematics and it's response

[Jose]

Hello Grat_Alex
Experimenting with different values of C21 get: Quick Response with less capacity but unstable.
Slow response with increased capacity, but always with the same sensitivity once stabilized.
Damping resistance, Coil decompensated or poorly detector setting, you can create erratic operation of "automatic mode."
Regards Jose

[betobrambi]

Hola José, te va la imagen

corrigeme si estoy equivocado, por favor... puedes dirigirte a mi persona en el siguiente email: [email protected]

gracias y mañana informo resultados

Great Alex and Jose

This is the position that takes NE 555 in the circuit, I suppose that I must weld a cable of Output 3 with a potentiometer of 100 ohms to one of the legs of the volume.
He is correct this?
I am going to try to draw it in the scheme of
components. to correct if I am mistaken.

they flow I inform broken results on diodes or resistance

for your help me, thanks my friends

Heriberto

[Jose]

Hola Betobrambi
No hay que agregar nada de los componentes ya existentes en su PCB, solamente hay que controlar.
Suguiero controlar la salida del 555 (pata 3) y el control de volumen, por ser elementos que corresponden a la etapa de sonido.

No need to add anything to the existing components on the PCB, but must be controlled.
Suggest a package to control the release of 555 (leg 3) and volume control are elements that correspond to the sound stage.
Jose

[Great_Alex]

Hola jose

nada útil se encuentra en la página n º 37?!
pero gracias de todos modos


I disconnect T7 B and C legs

the result is amazing :
reset works amazing it's works realy like Reset now!
speed of autotracking reduced and it can detect deep in auto mode

[hamidloucif]

broblem with my detector delta pulse

I board a problem with my detector it detects air dan 10cm I inform you that I board eseyes undiquer all changes on the forum if Geotech for ca I ask your help if posible (email) [email protected] - receverz blown up my best t

[Arash]

Hi Hamid

Delta pulse is best BARA GHAZ CHARANDAN
BE DARDE LANAT KARDAN HAM NEMIKHORE
VAGHTETO TALAF NAKON

AGE DONBALE GANJI BORO YEK GPR BEKHAR

[Great_Alex]

Change tune place

this zero button Switch works well now

Arash : Delta is good and stable if you good tune it but not as ps2 performance

[Jose]

Hi Great_Alex
Thanks for this Mod
In the original project, the audio fade when the coil remains stationary on a detected object.
This improves the work of MD in mineralized soil? What is your opinion.
Meet some mod to increase profit?
regards
Jose