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Offline lhartouka
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« Reply #870 on: November 04, 2016, 04:53:34 pm »
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My brothers made Delta a Los when she held heated ESA cd4066

Posted on: November 04, 2016, 04:43:52 pm
My brothers made Delta PLUS when she held heated ESA cd4066

Posted on: November 04, 2016, 04:45:40 pm

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« Reply #871 on: December 27, 2016, 07:30:13 pm »
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SOS .. MY PROJECT OF DELTA = SNIFFER, IS WITH LITTLE DETECTION, ,, COIL OF 27 CM, 450 UH ,,,, DETECTED PULSE CLOCK TO 15 CM ,,, USE CRAZY-TECH DISCRIMINATOR MODULE ,, RESISTOR 2, 2K, BUMPER, ,, COIL OF 27 CM AND 90 CM DETECT SAME OBJECT AT THE SAME DISTANCE, SIZE COIL DOES NOT INCREASE DEPTH OF DETECTION, SOMEONE KNOW THE PROBLEM? I THANK YOU ,

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« Reply #872 on: December 27, 2016, 08:27:52 pm »
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    Without a schematic showing your changes and mods we are in the dark. 

Was it working before Mods?

Did you do your basic set up like zero op amp voltage , Damping Resister and Sample Delay ?



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« Reply #873 on: January 04, 2017, 11:09:09 pm »
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Ready to use original PCB for Sniffer Xr-71

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« Reply #874 on: January 05, 2017, 12:46:35 am »
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Kindly include the price of the unit.

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« Reply #875 on: February 01, 2017, 05:38:36 am »
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Sr.s built first delta, and poor detection, discriminator crazy'tec ,,,, ok ,,,, but I was guided by forum member to exchange diodes 4148, china pOBRE
,,, never worked anymore ,,,, mute ,,, etc ,,,,,, dismantle ,,,,,

, I made another delta, now it does not detect coil ,,,,,,

  I changed irf740, and lm556 ,,, does not work, SAME SYMPTOMS

, Works a lot of instability, distorted sound, pot, all OK ,,, ONLY WITHOUT SIGNAL COIL ,,

SOMEBODY KNOW SOMETHING BETTER ?, ,


OBS ALL RESISTOR AND CAPACITOR TESTED AND MEASURED ,,
POSSUOUS WIRE METER, INDUCTANCE METER, capacitance meter ,,, all according to original design,


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« Reply #876 on: February 01, 2017, 09:30:35 am »
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Quote:Posted by alvazico1963
Sr.s built first delta, and poor detection, discriminator crazy'tec ,,,, ok ,,,, but I was guided by forum member to exchange diodes 4148, china pOBRE
,,, never worked anymore ,,,, mute ,,, etc ,,,,,, dismantle ,,,,,

, I made another delta, now it does not detect coil ,,,,,,

  I changed irf740, and lm556 ,,, does not work, SAME SYMPTOMS

, Works a lot of instability, distorted sound, pot, all OK ,,, ONLY WITHOUT SIGNAL COIL ,,

SOMEBODY KNOW SOMETHING BETTER ?, ,




OBS ALL RESISTOR AND CAPACITOR TESTED AND MEASURED ,,
POSSUOUS WIRE METER, INDUCTANCE METER, capacitance meter ,,, all according to original design,





Please start a New Post .   We will see if we can walk you through some trouble shooting .

Homefire


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« Last Edit: February 01, 2017, 10:12:21 am by homefire »
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« Reply #877 on: March 03, 2017, 05:29:01 pm »
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Quote:Posted by alvazico1963
Sr.s built first delta, and poor detection, discriminator crazy'tec ,,,, ok ,,,, but I was guided by forum member to exchange diodes 4148, china pOBRE
,,, never worked anymore ,,,, mute ,,, etc ,,,,,, dismantle ,,,,,

, I made another delta, now it does not detect coil ,,,,,,

  I changed irf740, and lm556 ,,, does not work, SAME SYMPTOMS

, Works a lot of instability, distorted sound, pot, all OK ,,, ONLY WITHOUT SIGNAL COIL ,,

SOMEBODY KNOW SOMETHING BETTER ?, ,


OBS ALL RESISTOR AND CAPACITOR TESTED AND MEASURED ,,
POSSUOUS WIRE METER, INDUCTANCE METER, capacitance meter ,,, all according to original design,



Try replace LF357 to LF356 sometime I counter faulty or fake LF357.

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« Last Edit: March 03, 2017, 05:30:34 pm by RAMPI »
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Offline mazari
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« Reply #878 on: 15 hours ago »
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hi for all. i have built a new dp butThe device emit  a continuous beats i adjust all the potentiometer at zero But they stay the same.please help me.thank you in advance

Posted on: September 20, 2017, 05:06:01 am
please take  a look at this video

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MVI_0041.flv


Posted on: September 20, 2017, 05:45:25 am
please take a look at this video

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« Reply #879 on: 15 hours ago »
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  Sorry, I can not open file.

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