Pim Puls .XR 7

[Orbit]

I looked again I do not have a complete scheme I put pcb xr 7 !

[Ferric Toes]

Does anyone know of a German company or partnership from the 1970's by the name of Albrecht and Scholtz? It was these that first used the name Sniffer and XR## and the names Pimdec, Superdec. I can find no record of them today on the internet.

Eric.

[Ferric Toes]

This is it.

The box says PULSE INDUCTION LTD
LONDON.
I have the schematic but I will have to get it reduced in size. Maybe tomorrow.

Eric.

[WM6]

Does anyone know of a German company or partnership from the 1970's by the name of Albrecht and Scholtz?
It was these that first used the name Sniffer and XR71 and the names Pimdec, Superdec.

Eric.

Hi Eric

It was known as "AS" company:

A+S, Albrecht + Scholz, Handelsgesellschaft mbH & Co. KG Kühlwetterstr. 28, Postfach 140106, 40239 Düsseldorf

Seem not active in detectors field anymore.

Sniffer XR 71 "kostet" in 1983 more than 4,000.00DM (Deutsch Mark).

More details out of my archive (click on picture for zoom):

[kt315]

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

[Ferric Toes]

Thanks WM6,

That has refreshed my memory. I just could not remember the name of the German company until today, then it suddenly came to me; hence my question. Between 1973 and 1975, I used to sell my PI detectors to a London company for the export market which included A + S. They (in London) set up Pulse Induction limited for these sales, but when I moved to Ireland in 1975 the relationship ceased and they got another company to do a re-design which resulted in the XR71 electronics we are talking about. This is a very strange design, as you will shortly see when I post the schematic. I thought the circuit was unnecessarily complicated, but it did have good performance particularly on deeper and more conductive objects.

I do have the full parts list, but I do not have the set-up procedure so I will not be much help in that respect.

Eric.

[Orbit]

Components on pcb this is it !

[Geo]

Anatoly, Thank you.

You provided me with information I searched for years.
Before many years Aban gave me the schematic of pcb from Delta Pulse in format for Protel98, and i had the question where he found it...
Now i know

Regards

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

[Orbit]

Anatoly, Thank you.

You provided me with information I searched for years.
Before many years Aban gave me the schematic of pcb from Delta Pulse in format for Protel98, and i had the question where he found it...
Now i know

Regards

That's best known to Eric !

[kt315]

Geo,

i am keeping emails to me from both. that give clear picture about their relation.

from: Gueorgui Gueorguiev <[email protected]>
subject: XR71

Hello KT315,
I/m can send you a pcb which is tuned and work well. Do you interest of it?
Gueorgui Gueorguiev
[email protected]

We haven't to speak 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 switch 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 bought it from Dubay! My friend was very happy that it detector was gone to OAE!
GG
================================================== ========
from: aban gooday <[email protected]>

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 [email protected]

[Ferric Toes]

Hi Kt315

You said, "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".

There are lots of Eric Fosters, but I don’t know of one from Australia that is also involved with metal detectors. This one, UK born and bred, has only visited Australia a few times to test detectors designed for the unique conditions of ground mineralisation. I have no knowledge of a Bulgarian person by the name of Georgi Georgiev, and I have never been personally involved in modifications or commercialisation of Sniffer XR-7 or XR-71.

"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".

As always seems to happen, detectors are copied, modified, improved, or their appearance changed by third parties, and in the course of time their origins become blurred or lost. What I do know for sure is that the 1979 schematic, parts list, and pcb layout that I have for the Pimdec and Superdec, originated with a company called Slade Electronics and the designer was Roy Parkin. His pcb matches that posted at the start of this thread.
There were lots of other ‘dec’s. Pulsedec, Microdec, Aquadec, Friskdec, and Hypodec. All of which were originally designed and made by my company and sold through Allen International in London who later setup Pulse Induction Ltd.

In the mid 1980’s, Slade Electronics also produced a detector called Eurodec, and the company where I then worked as Technical Director (Pulse Technology Ltd), got involved in helping to trace a design fault where one of the IC’s kept failing. That is when I met Roy Parkin who visited us with his Pimdec/Superdec and Eurodec, and gave us the schematics etc that I now have, so that we could do our own sales and servicing.
My parts list shows that the difference between the Pimdec and Superdec is that the Superdec has two less controls. i.e. 5 and 3 respectively.

It is good to know that these designs are still current and attract considerable interest.

Eric.

[kt315]

i said? 'Sneshka' said. i have to correct my notes by your new historical excursus guys.

There are lots of Eric Fosters

he meant you Eric. there are not more Ferric Toes.

thank you.

[eclipse]

Is there some more complete electricial schematic for this design that are possible to share in public?
The bits posted by Orbit looks like drawings from reverse engineering done by bulgarian folks and are incomplete.

[Ferric Toes]

i said? 'Sneshka' said. i have to correct my notes by your new historical excursus guys.

There are lots of Eric Fosters

he meant you Eric. there are not more Ferric Toes.

thank you.

Sorry, I thought Sneshka might be your name, as I only know Kt315.

The size of the schematic is such that I had to fold it in 4 to get it in the scanner, so I have scanned into 5 pieces which have to be stitched together. the vertical scan is of the mid section top to bottom as this is where some connections may be missed or unclear. Parts list to follow later as I have other work to do.

Eric.

[eclipse]

Wow that's fantastic, Eric, that's valuable contribution once again!