DBP 2010 / or other PI detectors

My friend, thank you for your help

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http://www.thunting.com/smf/index.php/topic,3092.msg321408.html#msg321408

I need you help！
Do you know PCB test point?
How many test points?
What is the standard for each test point?

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http://www.thunting.com/smf/index.php/topic,3092.msg321411.html#msg321411

Ok, thanks again

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the history about the DBP  i found digging the www

Quote from: gospodinzvonko Vreme 10:56:11 Date: 21.02.2013
   Dase we understand sniffer XR71. It's like dbp2010 I had a friend from original German snifferxr71. Delta sniffer xr71 is the same delta pulse is just a little modified made on a one-sided pcb. Aimprofessional sniffer worked on a two-way pcb.
I apologize to the gentleman, but I did not arrive these days to answer private messages or discussion posts.
So, unfortunately, I have to correct you regarding the equalization of the XR-71 and the DBP2010. Here is a brief history of the DBP2010 PI platform.
Namely, the official author of the PI metal detector DBP2010 is Rolf Wilhelm, which is more than clear from his book " Das Kompendium der Metalldetektoren ". When it appeared in a commercial offer, the DBP2010 cost from 4000 to 5000 German Marks, depending on the probes they purchased
A couple of years later, Rolf Wilhelm commercialized the PI metal detector named Sniffer XR-7, which was conceptually and technically identical to DBP2010, just dropped two filters, so instead of five potentiometers like DBP2010 - Sniffer XR-7 had only three potentiometers. Everything else was identical to DBP2010. The small and large PCBs with all components in the Sniffer XR-7 remained the same as in DBP2010. At the end of the '80s HH's Sniffer XR-7 detector cost from 3000 to 4000 German marks depending on the number of probes purchased.
After a few years, Australian Erik Foster (Eric Foster) and Bulgarian Georgi Georgiev modified Sniffer XR-7 and commercialized it under the name Sniffer XR-71 . This detector is now built on a single plate (no more small tiles than DBP2010 and Sniffer XR-7). The detector is equipped with 5 potentiometers as in the DBP2010, but regardless of conceptual and visual similarity, the Sniffer XR-71 has far-reaching technical parameters from its predecessors (DBP2010 and Sniffer XR-7) for which it was created. In 1991, the Sniffer XR-71 detector with three basic probes in Konrad cost 4,200 German marks.
In the middle of the last decade of the HH era, Bugarin from Burgas with the pseudonym "Aban" slightly modified the plate of the PI detector Sniffer XR-71 and redesigned the front panel, and this detector commercialized at the renowned metal detector Kellyco in America called Delta Pulse .
The Delta Pulse was equipped with a basic 1 hour 1 meter probe, and a 0.5 hour 0.5 m probe could also be purchased for it. In the basic suite Delta Pulse it cost about $ 3000. This detector was identical to the Sniffer XR-71 detector by the technical solutions, only differing in the conceptual solution of the panel.
So, when all is assembled, it is certain that the DBP2010 and Sniffer XR-7 detectors are technically identical to the Sniffer XR-71 and Delta Pulse detectors, while the detectors DBP2010 and Sniffer XR-7 are different from the Sniffer detector XR-71 and Delta Pulse.
To date, the Delta Pulse detector has undergone countless modifications (fewer or more successful or unsuccessful), and most of the trick.
That's why Orbit in one of his posts was somewhat sarcastic about the claims that the DBP2010 and Sniffer XR-71 detectors are the same.
Greeting!
Sneshka

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sniffer XR-71 and delta pulse only last files, not all i have

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concerning my last version board

Posted on: November 11, 2017, 08:21:19 am

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Hi Chris2 and all,
I'm taking a look at the three schematics and agree that there are some minor differences between XR-71 and Delta Pulse (mainly frequency, timings , battery

checker and the "auto" section present in the XR-71 only). The DBP-2010 seems similar to these previous but with different timings, different sampling tech,

different switching device etc.
Major differences are so on timings: delta and xr-71 use the well known 4538's monostables (also found in many other 80' and first 90' designs like GS4,

before the "microcontroller age") instead of DBP that uses a simple 4017 mos decade and 7556( ic1as astable and ic1b as monostable) to generate the timing

sequence (these are all obsolete components now) and also analogue gates absence (4066) that are not present in DBP , supply generator and diff integrators

network.
Also the switching device is not a mosfet in DBP but a bipolar device (NPN power transistor).
I don't know XR-7 but the pics posted some days ago seems to indicate that it's the same of DBP with a box that holds diff integrator stage to minimize noise

and background signals (so it's maybe an evolution of basic DBP).


I think DBP is an earlier design (middle 80') that used common available devices at that time to make the same things in a cheapy way.

Best regards,
Max

Posted on: November 11, 2017, 08:25:26 am

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from:  Gueorgui Gueorguiev <gmg@abv.bg> ( добавить в адреса) 
to:   
subject:  XR71
 
Hello KT315,
I/m can send you a pcb which is tuned and work well. Do you interest of it?
Gueorgui Gueorguiev
gmg@abv.bg


We haven't to speek for price. I'll send pcb not for money but for something similar. Last year I sent to Jurij some coil shells - you can ask him. My XR71 pcb is the same as "Aban" sent in Carl forum. He ("Aban" is pseudonim which one bulgarian boy have used. He is from Burgas and is very good liar.) He had stolen my pcb at the early 2000. This pcb have manifactured yet have a bit modification - we added a part with batery changer and lowbat indication. As you good know on pcb are swich for "Manual" - "Auto" tune which was soldered in "Auto" mode in "Aban" pcb. The main advantage my pcb is spetial selection for IC and pasive - You mast know this is "secret", because there were many XR71 detectors were manifactured but when you will test any from "VE EL electronics" you could register adventage. I have many detectors and think it was one of the best models at the time and can compare it.
About XR71 I can say that it "Father" XR7 (I had manifactured 3 devices before XR71) was one very fine designed Pi machine. If you are interesting I can send you shematics of XR7.
Best regards,
Gueorgui Gueorguiev

The best lie I received from "Aban" was for Gold Fish 2 - a Pi machine which was manifactured from my friend Wesselin Trendafiloff - "Aban" wrote me that he was bougt it from Dubay! My friend was very happy that it detector was gone to OAE!
GG


Posted on: November 11, 2017, 08:26:31 am

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from: aban gooday <abangooday@yahoo.co.uk>
         
time:      Sat, 3 Sep 2005 04:37:23 +0100 (BST)
subject:                SNIFFER-XR71
attached: message.html; sniXR71P_pl1-obr.JPG

Hi,I received your email.i have it original.I saw your site also.You put some shematic and information
about kinds of detector.It is good site.I have Pulstar l and psll scheme and pcb also and other detector
shematic which aren`t published in internet.I send you the pic of XR71 and it`s pcb in Protell99SE
format.Nice day Aban

--------------------------------------------------------------------------------

I HAVE THE SNIFFER XR-71 ORIGINAL SHEMATIC AND PCB AND COIL CONFIGURATION.I HAVE BUILT IT AND IT IS GOOD
AND STABLE PI DETECTOR.
MY EMAIL ADDRESS IS ABANGOODAY@YAHOO.CO.UK

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