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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) >

DBP 2010 / or other PI detectors

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skubeedoo

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	Re: DBP 2010 / or other PI detectors « Reply #120 on: March 22, 2010, 12:24:19 am »

I looked through all threads for info about this detector. All I found was several pictures of assembled boards, PCB layouts and one schematic. The schematic doesn't tell much...there's a lot of "k" #'s that doesn't indicate what they're for. Why are there two PCB's...I understand there are two becuase of noise isolation, but how is the final detector assembled? Where do the boards go? What are all the "k" points? Is there any documentation on this?

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darkkitten2000

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Miner4 eeTH

	Re: DBP 2010 / or other PI detectors « Reply #121 on: March 22, 2010, 01:50:13 am »

Hi,
e-mail me for schematics, parts list etc.

the smaller board is soldered in place threw "K" marked holes. I used golded connector pins, there are 12 of them so do not worry, the small PCB is soldered in place and it will not go anywhere.

regards,
d.

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wil

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	Re: DBP 2010 / or other PI detectors « Reply #122 on: March 23, 2010, 03:22:43 am »

Dark Kitten , you have built the DBP2010, do you know where to get the IC-7 (MA709) chip on the piggyback board, or maybe a good substitute? Where I am, that part # is unknown.

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darkkitten2000

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	Re: DBP 2010 / or other PI detectors « Reply #123 on: March 23, 2010, 05:35:31 am »

Hi wil,

the uA709 is an old 709 OPAMP, you can check with Farnell, but i advise you to check with your local dealer for LM709 (LM709CN DIP8), if you'll be unable to get it i have one in my junk-box.

regards,
d.

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electrosoft

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	Re: DBP 2010 / or other PI detectors « Reply #124 on: March 23, 2010, 03:01:56 pm »

hi can i use 10nf instead 12nf ( i found only 12nf 2000v Shocked

) and potentiometer 22k instead 20k
thanks br!

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darkkitten2000

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	Re: DBP 2010 / or other PI detectors « Reply #125 on: March 24, 2010, 12:09:13 am »

Hi,
use 10nF and 2nF in parellel, there is an extra space on PCB for that. Probably 22K poti will do as well.

d.

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wil

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	Re: DBP 2010 / or other PI detectors « Reply #126 on: March 26, 2010, 07:54:01 am »

On the DBP2010, what size wire and # of turns do I use for a searchcoil? I plan to make a 7.5 inch and and a 10 inch.

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darkkitten2000

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	Re: DBP 2010 / or other PI detectors « Reply #127 on: March 26, 2010, 11:07:20 am »

Hi,
43 turns on fi 23 cm diameter
23 turns on 45 cm diameter
11 turns on 1m x 1m square (or 11 wire cabel)

of

0.5mm diameter wire.

d.

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wil

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	Re: DBP 2010 / or other PI detectors « Reply #128 on: March 26, 2010, 11:40:05 am »

Thanks D.K., on the wire sizes, I am still trying to locate a ua709, I found one but the vultures want $5.00, plus they got a $40.00 minimum. are you sure there arent any other op amps that will work in its place? Wil

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darkkitten2000

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	Re: DBP 2010 / or other PI detectors « Reply #129 on: March 26, 2010, 12:02:31 pm »

Hi,

LM709 will do.

d.

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