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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Tech Talk > Metal Detectors > PI Designs & Deepseekers (Moderators: Eugene52, Cornelius) >

A_PULSE2 of Mollax and Asel38

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haikel774 Topic starter

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	A_PULSE2 of Mollax and Asel38 « on: October 16, 2011, 02:40:01 pm »

hi All

I have build A_PULSE2 v3 but hi doesn't work well .there is noise coming from the speaker but the coil doesn't detect anything

thanks for all

best time

haikel774

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SMITY

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	Re: A_PULSE2 of Mollax and Asel38 « Reply #1 on: October 18, 2011, 12:00:22 am »

Where you can read about this detector?

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japanese

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GARY PI

	Re: A_PULSE2 of Mollax and Asel38 « Reply #2 on: October 18, 2011, 09:33:05 am »

Hi haikel774
1- TEST the voltges -12v,-8v,+8v ,GND=+12V
2- TEST Q1=2N2686 ,U6 ...... (2N2686 SAME NO:,TYPE)

best time
j

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haikel774 Topic starter

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	Re: A_PULSE2 of Mollax and Asel38 « Reply #3 on: October 18, 2011, 03:42:47 pm »

HI JAPANESE

components I use are not the same in the diagram.

for the bc337 i used c33725 W79

for the bc327 i used c32725 W79

for the bc557 i used c557b w75

THANK YOU VERY MUCH

BEST TIME

HAIKEL774

Posted on: October 18, 2011, 03:32:03 PM

HI SMITY

YOU CAN READ ABOUT THE DETECTOR IN THIS SITE

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http://www.teknolojiekibi.com/yeni/index.php?topic=2397.0

AND THIS FROM ASEL38

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http://www.geotech1.com/forums/showthread.php?t=10894&highlight=PULSE+STAR+BG&page=3

THANK YOU

BEST TIME

HAIKEL774

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ram

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	Re: A_PULSE2 of Mollax and Asel38 « Reply #4 on: October 19, 2011, 02:51:46 am »

Quote:

Posted by haikel774

HI SMITY

YOU CAN READ ABOUT THE DETECTOR IN THIS SITE

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http://www.teknolojiekibi.com/yeni/index.php?topic=2397.0

AND THIS FROM ASEL38

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http://www.geotech1.com/forums/showthread.php?t=10894&highlight=PULSE+STAR+BG&page=3

THANK YOU

BEST TIME

HAIKEL774

hello, it was a modified bulgarian pi. i heard it was also a good pi md.

ram,

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japanese

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	Re: A_PULSE2 of Mollax and Asel38 « Reply #5 on: October 19, 2011, 10:47:51 am »

Hi haikel774
It is one of improvement on the PS-BG TO get mode.
components u use are the same in the diagram.
Q3,4,5=bc337=c337-25 W79 (test EBC )
Q12 =bc557=c557b-w75 (test EBC )
-----------------------
1- TEST the voltges -12v,-8v,+8v ,GND=+12V.
2- TEST Q1=2N2686 ,U6 ...... (2N2686 SAME NO:,TYPE).
3-RV1 (DELAY) put in max sensitivity (do not touch ).
4-RV2 discrimination> ADJ in half and not touch .
5-test Q3,4,5
6-ADJ RV3 IN BEST position when LED GREEN SEEM TO BE LIGHT.

best time
j.

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haikel774 Topic starter

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	Re: A_PULSE2 of Mollax and Asel38 « Reply #6 on: October 19, 2011, 03:50:58 pm »

HI JAPANESE

FIRST THANK YOU FOR YOUR HELP.

I HAVE REPLACED ALL TRANSISTOR WHIT ORIGINAL TYPE BC.......

BUT I HAVE THE SAME PROBLEM AND THE U10 BECOMES HOT

THANK YOU

HAIEL

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GARY PI

	Re: A_PULSE2 of Mollax and Asel38 « Reply #7 on: October 19, 2011, 04:03:25 pm »

Hi haikel774

Follow steps 1 to 6, and will work

best time
j.

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haikel774 Topic starter

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	Re: A_PULSE2 of Mollax and Asel38 « Reply #8 on: October 26, 2011, 03:41:37 pm »

HI JAPANESE

THE A_PULSE 2V2 WORKS BUT IT DOESN'T DETECTECT ANY THING ONLY WHEN YOU PUT THE COIL NEAR THE PC THE GREEN LED LITS. ALSO THE SPEAKER DOESN'T WORK REGULARLY;SOMETIMES IT MAKES NOISE AND SOMETIMES IT DOESN'T.

BEST REGARDS

H.

Posted on: October 26, 2011, 03:12:38 PM

Hi Japanese,

what is meant by L2 and L3?
Can I replace them with normal resistances value 7 or 8 ohm?
Thankyou

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japanese

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GARY PI

	Re: A_PULSE2 of Mollax and Asel38 « Reply #9 on: October 26, 2011, 06:00:49 pm »

Hi haikel774

The problem is not the transistor, because they figure the same problem ,the problem in obtaining the voltages -12v, +8v ,GND=+12V.

Replace the u10= 555,,, tested the voltges -12v, +8v ,GND=+12V. as in the image is there voltges .... and test of the components that after u10=555.

-the most important to run the project must obtain a voltages exactly.

-what is meant by L2 and L3? ----it is filter coil u Cant replace them .

best time
j.

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