Bengt Gustaf Olsson: Difference between revisions

Bengt G. Olsson
Bengt G. Olsson
Born	May 6, 1924; Steneby parish, Dalsland, Sweden
Died	April 15, 2015 (aged 90); Nacka, Sweden
Nationality	Sweden
Alma mater	Chalmers University of Technology
Occupation(s)	Inventor and entrepreneur

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Backside of a brochure for Bengt G. Olssons consultancy company "Inventor, Inc.", which was active in New York in the beginning of the 1960s

Bengt Gustaf Olsson (May 6, 1924, in the parish of Steneby in Dalsland, Sweden – April 4, 2015, in Stockholm, Sweden) was a Swedish inventor and entrepreneur. He was active both in Sweden as well as in the United States as an electrical engineer within the field of analog electronics. He also founded the Swedish electronics company Xelex AB that provided electronic equipment for professional use as well as HiFi equipment for personal use.

Biography

Bengt G. Olsson was born and raised outside the small village of Dals Långed in the landscape of Dalsland that constitutes a rural part of western Sweden. His parents were Martin Olsson, descendant from Blekinge and a teacher of an elementary school, and his wife Ester, born Löfgren and descendant from Småland. He studied electrical engineering and electronics at the Chalmers University of Technology in Gothenburg and took his Master of Science degree in 1949. During the 1950s he divided his time mainly between the two large Swedish companies ASEA (now part of ABB) and LM Ericsson, before moving to New York, USA in 1959. In New York he worked in various engineering positions within microwave technology, power supply and space electronics. He also had his own consultancy business under the profound name "Inventor, Inc.".

After moving back to Sweden in 1964 he founded the company "Xelex AB" that during almost three decades supplied electronic products, mainly for the B2B segment but also in less extent to private persons. Bengt G. Olsson have a number of patents within such different areas as wire recorders,^[1] transistor amplifiers,^[2] heat regulation,^[3] to sailing ships.^[4] Within amplifier theory, he was advocating negative feedback as an important mechanism for linearity of amplifiers,^[5] and provided many innovative new solutions (for example^[6] ). He also debated the nature of Transient Intermodulation Distorsion (TIM), which was a controversial subject at the time, in an important contribution^[7]^[a] to Audio Engineering Society (AES) 56th convent in Paris 1977.^[8]

After having divested his company, Olsson continued within the electronics field on a consultancy basis. In Sweden he is well known within the electronics community for his series of articles, called "Olsson's tips" that were written in an educative and personal style, in the electronics branch media "Modern Elektronik" and "Elektronik i Norden". He also wrote several articles for the international Electronics World + Wireless World magazine.^[9]^[10]^[11] During his last productive years he spent much time on his own theory about the origination of the universe that he termed the "Slow Start universe" (compare "Big Bang"). His main argument was that the Slow Start theory explains the spectral redshift, that according to the Big Bang theory is caused by an expanding universe, in a simpler manner by instead assuming that time itself slowly accelerates.

Bengt G. Olsson was in 1960 admitted as a senior member of the Institute of Radio Engineers (later IEEE).

Xelex AB

"Ingenjörsfirman Xelex AB" ("Engineering firm Xelex Inc") was founded 1964 by Bengt G. Olsson, who also was the technical lead of the company.^[12] Xelex had its premises at various places in the southern Stockholm area during the 1960s, 1970s and 1980s. Early products were related to measurement equipment.^[13] Later the products were either standard products or customized products for larger customers. Among the standard products were operational amplifiers,^[14] stabilized rectifiers and DC/DC converters.^[12] The other large group of products were equipment for audio production and distribution, from pre- and power-amplifiers to audio mixers and complete PA systems. A famous product was the DD-10 power amplifier that could be found in many audio locations. Their products had a reputation for durability and in one of Xelex brochures from the 1970s they used a slogan "If you drop a Xelex amplifier on the floor, it is probably the floor that will be damaged". Among the customers for audio equipment were the national broadcasters Sveriges Radio^[12] and Norsk rikskrinkasting.^[12]^[15]

Xelex AB was acquired in 1985 by Datatronic AB^[16] and Olsson stayed for a short time as a consultant. The name was changed to "Xelex Elektronik AB" and the focus of the company changed into developing and manufacture among other things, cost effective satellite receivers for home users. After Datatronics acquisition of Victor Technology, also handheld computers were manufactured. Xelex were also responsible for the manufacturing of Victor's M-series computer. Tandy Corporation acquired Victor in 1989 and Xelex ceased to operate in 1990. The name "Xelex" has later been used by the Swedish chip manufacturer Xelerated but their activity has nothing to do with the original Xelex.

Standard products from Xelex product range

References

^ Olsson, B G (1952-08-21). "Arrangement by an apparatus for magnetic voice recording and playback" (PDF). Svensk Patentdatabas. PRV. Retrieved 2020-01-17.
^ Olsson, Bengt G. (1985-08-27). "Transistor amplifier". USPTO. Retrieved 2018-11-25.
^ Olsson, Bengt G. (1986-05-29). "Elvärmeregulator för rumsuppvärmning" [Electric heat regulator for heating of rooms] (PDF). Svensk Patentdatabas. PRV. Retrieved 2018-11-25.
^ Olsson, B G (1964-09-29). "Segelfartyg av fiberarmerad plast med deplacementköl" [Sailing vessel made of fibre reinforced plastics with a displacement keel] (PDF). Svensk Patentdatabas. PRV. Retrieved 2018-11-25.
^ Olsson, B G. "Om motkoppling i effektförstärkare för hi-fi återgivning" [About feedback in power amplifiers for hi-fi reproduction]. Radio & Television - Nr 2 - 1957.
^ Duncan, Ben (1996). High Performance Audio Power Amplifiers for music performance and reproduction. p. 112. ISBN 978-0-7506-2629-3. S2CID 117286465. the Olsson scheme
^ ^a ^b Olsson, B. (1977-03-01). "Critical Review of the TIM (Transient Intermodulation Distortion) Theory". Aes E-Library. Paper number: 1200. Retrieved 2019-08-04.
^ Jung, Walter G.; Stephens, Mark L.; Young Craig, Victor; Parti, Cumhuriyetçi (2015) [1979]. "An Overview Of SID and TIM" (PDF). Walt Jung. S2CID 30355753. Archived from the original (PDF) on 2015-06-13.
^ Olsson, Bengt G. (December 1994). "Better Audio from Non-complements?" (PDF). Electronic World + Wireless World: 988–992.
^ Olsson, Bengt G. (February 1995). "New null filter replaces twin-T" (PDF). Electronic World + Wireless World: 119–120.
^ Olsson, Bengt G. (July 1995). "Double Mirrors Reflect Higher Speed" (PDF). Electronic World + Wireless World: 571–573.
^ ^a ^b ^c ^d Hedström, Larsgöran (1979). "Xelex - svenska ljudåtergivningsapparater" [Xelex - swedish sound reproduction machines]. Musikrevy (in Swedish). 34: 114–118.
^ "Advertisement in Radio & Television" (PDF). October 1966. p. 89. Retrieved 2019-08-04.
^ Bengt G. Olsson. "Provning och specifikation av operationsförstärkare" [Test and specification of operational amplifiers] (PDF). Radio & Television - Nr 1 - 1969. p. 14. Retrieved 2019-08-04.
^ "Bjørn Børja". Retrieved 2019-08-16.
^ "Datatronic tar över Xelex AB" [Datatronic acquires Xelex AB]. Svenska Dagbladet. 1985-05-17. Retrieved 2018-11-27.

Notes

^ Private communication with Walt Jung, 2016-01-06, "For whatever it may be worth, that paper^[7] may be one of the most cogent ever on this topic. Your father was truly a gifted engineer, and a brilliant man indeed."

[1] Olsson, B G (1952-08-21). "Arrangement by an apparatus for magnetic voice recording and playback" (PDF). Svensk Patentdatabas. PRV. Retrieved 2020-01-17.

[2] Olsson, Bengt G. (1985-08-27). "Transistor amplifier". USPTO. Retrieved 2018-11-25.

[3] Olsson, Bengt G. (1986-05-29). "Elvärmeregulator för rumsuppvärmning" [Electric heat regulator for heating of rooms] (PDF). Svensk Patentdatabas. PRV. Retrieved 2018-11-25.

[4] Olsson, B G (1964-09-29). "Segelfartyg av fiberarmerad plast med deplacementköl" [Sailing vessel made of fibre reinforced plastics with a displacement keel] (PDF). Svensk Patentdatabas. PRV. Retrieved 2018-11-25.

[5] Olsson, B G. "Om motkoppling i effektförstärkare för hi-fi återgivning" [About feedback in power amplifiers for hi-fi reproduction]. Radio & Television - Nr 2 - 1957.

[6] Duncan, Ben (1996). High Performance Audio Power Amplifiers for music performance and reproduction. p. 112. ISBN 978-0-7506-2629-3. S2CID 117286465. the Olsson scheme

[AES-7] Olsson, B. (1977-03-01). "Critical Review of the TIM (Transient Intermodulation Distortion) Theory". Aes E-Library. Paper number: 1200. Retrieved 2019-08-04.

[9] Jung, Walter G.; Stephens, Mark L.; Young Craig, Victor; Parti, Cumhuriyetçi (2015) [1979]. "An Overview Of SID and TIM" (PDF). Walt Jung. S2CID 30355753. Archived from the original (PDF) on 2015-06-13.

[10] Olsson, Bengt G. (December 1994). "Better Audio from Non-complements?" (PDF). Electronic World + Wireless World: 988–992.

[11] Olsson, Bengt G. (February 1995). "New null filter replaces twin-T" (PDF). Electronic World + Wireless World: 119–120.

[12] Olsson, Bengt G. (July 1995). "Double Mirrors Reflect Higher Speed" (PDF). Electronic World + Wireless World: 571–573.

[:0-13] Hedström, Larsgöran (1979). "Xelex - svenska ljudåtergivningsapparater" [Xelex - swedish sound reproduction machines]. Musikrevy (in Swedish). 34: 114–118.

[14] "Advertisement in Radio & Television" (PDF). October 1966. p. 89. Retrieved 2019-08-04.

[rt69-15] Bengt G. Olsson. "Provning och specifikation av operationsförstärkare" [Test and specification of operational amplifiers] (PDF). Radio & Television - Nr 1 - 1969. p. 14. Retrieved 2019-08-04.

[16] "Bjørn Børja". Retrieved 2019-08-16.

[17] "Datatronic tar över Xelex AB" [Datatronic acquires Xelex AB]. Svenska Dagbladet. 1985-05-17. Retrieved 2018-11-27.

[8] Private communication with Walt Jung, 2016-01-06, "For whatever it may be worth, that paper^[7] may be one of the most cogent ever on this topic. Your father was truly a gifted engineer, and a brilliant man indeed."

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@@ Line 1: / Line 1: @@
+{{Short description|Swedish inventor and entrepreneur}}
-<!-- EDIT BELOW THIS LINE -->
 {{Infobox person
 |name = Bengt G. Olsson
@@ Line 6: / Line 5: @@
 |birth_date = May 6, 1924
 |birth_place = Steneby parish, [[Dalsland]], Sweden
-|residence = Sweden and United States
 |nationality = {{flag|Sweden}}
 |death_date = {{death date and age|2015|04|15|1924|5|6}}
 |death_place = [[Nacka]], Sweden
-|occupation = [[Inventor]] and [[Entrepeneur]]
+|occupation = [[Inventor]] and [[Entrepreneurship|entrepreneur]]
 |alma_mater = [[Chalmers University of Technology]]
 }}
 [[File:InventorInc.jpg|thumb|right|Backside of a brochure for Bengt G. Olssons consultancy company "Inventor, Inc.", which was active in New York in the beginning of the 1960s]]
-'''''Bengt'' Gustaf Olsson''', born May 6, 1924 in the parish of Steneby in [[Dalsland]], [[Sweden]], and died April 4, 2015 in [[Stockholm]], Sweden, was a Swedish [[inventor]] and [[entrepeneur]]. He was active both in Sweden as well as in the [[United States]] as an [[electrical engineer]] within the field of analog electronics. He also founded the Swedish electronics company Xelex AB that provided electronic equipment for professional use as well as HiFi equipment for personal use.
+'''Bengt Gustaf Olsson''' (May 6, 1924, in the parish of Steneby in [[Dalsland]], [[Sweden]] – April 4, 2015, in [[Stockholm]], Sweden) was a Swedish [[inventor]] and [[Entrepreneurship|entrepreneur]]. He was active both in Sweden as well as in the [[United States]] as an [[electrical engineer]] within the field of analog electronics. He also founded the Swedish electronics company Xelex AB that provided electronic equipment for professional use as well as HiFi equipment for personal use.
 == Biography ==
-Bengt G. Olsson was born and raised outside the small village of [[Dals Långed]] in the landscape of Dalsland that constitutes a rural part of western Sweden. His parents were Martin Olsson, descendant from [[Blekinge]] and a teacher of an elementary school, and his wife Ester, born Löfgren and descendant from [[Småland]]. He studied [[electrical engineering]] and [[electronics]] at the [[Chalmers University of Technology]] in [[Gothenburg]] and took his [[Master of Science]] degree in 1949. During the 1950s he divided his time mainly between the two large swedish companies [[ASEA]] (now part of [[ABB]]) and [[LM Ericsson]], before moving to [[New York]], USA in 1959. In New York he worked in various engineering positions within [[microwave]] technology, power supply and space electronics. He also had his own consultancy business under the profound name "Inventor, Inc.". In this role he for example helped starting up [https://www.ddc-web.com/en/about/overview/about-us Data Devices Corporation] which first product was based on an invention of Olsson.{{efn| From Bengt G. Olssons own "Personal Data" short CV, and discussions with his wife Marit. Data Devices Corporation is also referred to in <ref | name="rt69"></ref>}}
+Bengt G. Olsson was born and raised outside the small village of [[Dals Långed]] in the landscape of Dalsland that constitutes a rural part of western Sweden. His parents were Martin Olsson, descendant from [[Blekinge]] and a teacher of an elementary school, and his wife Ester, born Löfgren and descendant from [[Småland]]. He studied [[electrical engineering]] and [[electronics]] at the [[Chalmers University of Technology]] in [[Gothenburg]] and took his [[Master of Science]] degree in 1949. During the 1950s he divided his time mainly between the two large Swedish companies [[ASEA]] (now part of [[ABB]]) and [[LM Ericsson]], before moving to [[New York (state)|New York]], USA in 1959. In New York he worked in various engineering positions within [[microwave]] technology, power supply and space electronics. He also had his own consultancy business under the profound name "Inventor, Inc.".
-After moving back to Sweden in 1964 he founded the company "Xelex AB" that during more than two decades supplied electronic products, mainly for the [[B2B]] segment but also in less extent to private persons. Bengt G. Olsson have a number of patents within such different areas as transistor amplifiers,<ref>{{cite web|title=Transistor amplifier|url=http://pdfpiw.uspto.gov/.piw?Docid=4538117|author=Olsson, Bengt G.|publisher=USPTO|date=1985-08-27|accessdate=2018-11-25}}</ref> heat regulation,<ref>{{cite web|title=Elvärmeregulator för rumsuppvärmning|trans-title= Electric heat regulator for heating of rooms|url=https://was.prv.se/spd/pdf/-GjlFaAELlthSy3t0WW1EA/SE443055.B.pdf|author=Olsson, Bengt G.|work=Svensk Patentdatabas|publisher=PRV|date=1986-05-29|accessdate=2018-11-25}}</ref> to sailing ships.<ref>{{cite web|title=Segelfartyg av fiberarmerad plast med deplacementköl|trans-title= Sailing vessel made of fibre reinforced plastics with a displacement keel|url=https://was.prv.se/spd/pdf/wGlwDsuka-eo8KKJ4aHscA/SE191839.C1.pdf|author=Olsson, B G|work=Svensk Patentdatabas|publisher=PRV|date=1964-09-29|accessdate=2018-11-25}}</ref> Within amplifier theory, he was advocating negative feedback as an important mechanism for linearity of amplifiers.<ref>{{cite journal |last1=Olsson |first1=B G|date= |title= Om motkoppling i effektförstärkare för hi-fi återgivning|trans-title= About feedback in power amplifiers for hi-fi reproduction|journal= Radio & Televison - Nr 2 - 1957}}</ref> He also debated the nature of [[Transient Intermodulation Distorsion]] (TIM), which was a controversial subject at the time, in an important contribution<ref name="AES">{{cite web|title=Critical Review of the TIM (Transient Intermodulation Distortion) Theory|url=http://www.aes.org/e-lib/browse.cfm?elib=3155|last=Olsson|first=B.|work=AES E-LIBRARY|date=1977-03-01|accessdate=2019-08-04}}</ref>{{efn|Private communication with [[Walt Jung]], 2016-01-06, ''"For whatever it may be worth, that paper<ref name="AES"></ref> may be one of the most cogent ever on this topic. Your father was truly a gifted engineer, and a brilliant man indeed."''}} to Audio Engineering Society ([[Audio Engineering Society|AES]]) 56th convent in Paris 1977.
+After moving back to Sweden in 1964 he founded the company "Xelex AB" that during almost three decades supplied electronic products, mainly for the [[Business-to-business|B2B]] segment but also in less extent to private persons. Bengt G. Olsson have a number of patents within such different areas as [[wire recorder|wire recorders]],<ref>{{cite web|url=https://tc.prv.se/spd/pdf/lIgbi7PTBLWo8KKJ4aHscA/SE138016.C1.pdf|title=Arrangement by an apparatus for magnetic voice recording and playback |access-date=2020-01-17|author=Olsson, B G|date=1952-08-21|work=Svensk Patentdatabas|publisher=PRV}}</ref> [[transistor amplifier|transistor amplifiers]],<ref>{{cite web|title=Transistor amplifier|url=http://pdfpiw.uspto.gov/.piw?Docid=4538117|author=Olsson, Bengt G.|publisher=USPTO|date=1985-08-27|access-date=2018-11-25}}</ref> heat regulation,<ref>{{cite web|title=Elvärmeregulator för rumsuppvärmning|trans-title= Electric heat regulator for heating of rooms|url=https://was.prv.se/spd/pdf/-GjlFaAELlthSy3t0WW1EA/SE443055.B.pdf|author=Olsson, Bengt G.|work=Svensk Patentdatabas|publisher=PRV|date=1986-05-29|access-date=2018-11-25}}</ref> to sailing ships.<ref>{{cite web|title=Segelfartyg av fiberarmerad plast med deplacementköl|trans-title= Sailing vessel made of fibre reinforced plastics with a displacement keel|url=https://was.prv.se/spd/pdf/wGlwDsuka-eo8KKJ4aHscA/SE191839.C1.pdf|author=Olsson, B G|work=Svensk Patentdatabas|publisher=PRV|date=1964-09-29|access-date=2018-11-25}}</ref> Within amplifier theory, he was advocating negative feedback as an important mechanism for linearity of amplifiers,<ref>{{cite journal |last1=Olsson |first1=B G|title= Om motkoppling i effektförstärkare för hi-fi återgivning|trans-title= About feedback in power amplifiers for hi-fi reproduction|journal= Radio & Television - Nr 2 - 1957}}</ref> and provided many innovative new solutions (for example<ref>{{Cite book|title=High Performance Audio Power Amplifiers for music performance and reproduction|url=https://archive.org/details/highperformancea00dunc|url-access=limited|last=Duncan|first=Ben|s2cid=117286465|year=1996|page=[https://archive.org/details/highperformancea00dunc/page/n127 112]|isbn=978-0-7506-2629-3 |quote=the Olsson scheme}}</ref> ). He also debated the nature of [[Transient Intermodulation Distorsion]] (TIM), which was a controversial subject at the time, in an important contribution<ref name="AES">{{cite journal|url=http://www.aes.org/e-lib/browse.cfm?elib=3155|title=Critical Review of the TIM (Transient Intermodulation Distortion) Theory|last=Olsson|first=B.|date=1977-03-01|journal=Aes E-Library|series=Paper number: 1200|access-date=2019-08-04}}</ref>{{efn|Private communication with [[Walt Jung]], 2016-01-06, ''"For whatever it may be worth, that paper<ref name="AES"></ref> may be one of the most cogent ever on this topic. Your father was truly a gifted engineer, and a brilliant man indeed."''}} to Audio Engineering Society ([[Audio Engineering Society|AES]]) 56th convent in Paris 1977.<ref>{{Cite web |title=An Overview Of SID and TIM |website=Walt Jung |last1=Jung|first1=Walter G.|author-link=Walt Jung|last2=Stephens|first2=Mark L.|date=2015|orig-date=1979|last3=Young Craig|first3=Victor|last4=Parti|first4=Cumhuriyetçi|s2cid=30355753 |url=http://www.waltjung.org/PDFs/SID_TIM_1.pdf |archive-url=https://web.archive.org/web/20150613072253/http://www.waltjung.org/PDFs/SID_TIM_1.pdf |archive-date=2015-06-13}}</ref>
-After having divested his company, Olsson continued within the electronics field on a consultancy basis. In Sweden he is well known within the electronics community for his series of articles, called "Olsson's tips" that were written in an educative and personal style, in the electronics branch media magazines "Modern Elektronik" and "Elektronik i Norden". He also wrote several articles for the international [[Electronics World| Electronics World + Wireless World]] magazine. During his last productive years he spent much time on his own theory about the origination of the universe that he termed the "Slow Start universe" (compare "Big Bang"). His main argument was that the Slow Start theory explains the spectral red-shift, that according to the [[Big Bang]] theory is caused by an expanding universe, in a simpler manner by instead assuming that time itself slowly accelerates.
+After having divested his company, Olsson continued within the electronics field on a consultancy basis. In Sweden he is well known within the electronics community for his series of articles, called "Olsson's tips" that were written in an educative and personal style, in the electronics branch media "Modern Elektronik" and "Elektronik i Norden". He also wrote several articles for the international [[Electronics World| Electronics World + Wireless World]] magazine.<ref>{{Cite journal|last=Olsson|first=Bengt G.|date=December 1994|title=Better Audio from Non-complements?|url=https://americanradiohistory.com/Archive-Wireless-World/90s/Wireless-World-1994-12.pdf|journal=Electronic World + Wireless World|pages=988–992}}</ref><ref>{{Cite journal|last=Olsson|first=Bengt G.|date=February 1995|title=New null filter replaces twin-T|url=https://americanradiohistory.com/Archive-Wireless-World/90s/Wireless-World-1995-02-S-OCR.pdf|journal=Electronic World + Wireless World|pages=119–120}}</ref><ref>{{Cite journal|last=Olsson|first=Bengt G.|date=July 1995|title=Double Mirrors Reflect Higher Speed|url=https://americanradiohistory.com/Archive-Wireless-World/90s/Wireless-World-1995-07-S-OCR.pdf|journal=Electronic World + Wireless World|pages=571–573}}</ref> During his last productive years he spent much time on his own theory about the origination of the universe that he termed the "Slow Start universe" (compare "Big Bang"). His main argument was that the Slow Start theory explains the spectral [[redshift]], that according to the [[Big Bang]] theory is caused by an expanding universe, in a simpler manner by instead assuming that time itself slowly accelerates.
-Bengt G. Olsson was in 1960 admitted as a ''senior member'' of the [[Institute of Electrical and Electronics Engineers| Institute of Radio Engineers]] (later [[Institute of Electrical and Electronics Engineers| IEEE]]).
+Bengt G. Olsson was in 1960 admitted as a ''senior member'' of the [[Institute of Electrical and Electronics Engineers|Institute of Radio Engineers]] (later [[Institute of Electrical and Electronics Engineers|IEEE]]).
 == Xelex AB ==
 [[File:XelexLogga.png|thumb|left|Xelex AB logotype, showing a stylized operational amplifier.]]
-"Ingenjörsfirman Xelex AB" (''"Engineering firm Xelex Inc"'') was founded 1964 by Bengt G. Olsson, who also was the technical lead of the company. Xelex had its premises at various places in the southern Stockholm area during the 1960s, 1970s and 1980s. Early products were related to measurement equipment.<ref>{{cite web|title=Advertisement in Radio & Television|url=https://www.aef.se/Amatortidningar/Radio_och_Television/radio_television_1966_10-ocr.pdf|page=89|date= October 1966|accessdate=2019-08-04}}</ref> Later the products were either ''standard products'' or customized products for larger customers. Among the standard products were [[operational amplifiers]],{{efn| Radio & Televison magazine article by Bengt G. Olsson from 1969 about test and specification of operational amplifiers: <ref | name="rt69">{{cite web|author= Bengt G. Olsson|title= Provning och specifikation av operationsförstärkare|trans-title= Test and specification of operational amplifiers|url= https://www.aef.se/Amatortidningar/Radio_och_Television/radio_television_1969-01-ocr.pdf|magazine= Radio & Television - Nr 1 - 1969|page= 14|accessdate= 2019-08-04}}</ref>}} stabilized [[rectifiers]] and DC/DC converters. The other large group of products were equipment for audio production and distribution, from pre- and power-amplifiers to audio mixers and complete [[PA systems]]. A famous product was the DD-10 power amplifier that could be found in many locations for audio. Their products had a reputation for durability and in one of Xelex brochures from the 1970s they used a slogan "If you drop a Xelex amplifier on the floor, it is probably the floor that will be damaged". Among the customers for audio equipment were the national broadcasters [[Sveriges Radio]] and [[NRK|Norsk rikskrinkasting]].
+"Ingenjörsfirman Xelex AB" (''"Engineering firm Xelex Inc"'') was founded 1964 by Bengt G. Olsson, who also was the technical lead of the company.<ref name=":0">{{Cite journal|last=Hedström|first=Larsgöran|year=1979|title=Xelex - svenska ljudåtergivningsapparater|trans-title=Xelex - swedish sound reproduction machines|journal=Musikrevy|language=sv|volume=34|pages=114–118}}</ref> Xelex had its premises at various places in the southern Stockholm area during the 1960s, 1970s and 1980s. Early products were related to measurement equipment.<ref>{{cite web|title=Advertisement in Radio & Television|url=https://www.aef.se/Amatortidningar/Radio_och_Television/radio_television_1966_10-ocr.pdf|page=89|date= October 1966|access-date=2019-08-04}}</ref> Later the products were either ''standard products'' or customized products for larger customers. Among the standard products were [[operational amplifiers]],<ref | name="rt69">{{cite web|author= Bengt G. Olsson|title= Provning och specifikation av operationsförstärkare|trans-title= Test and specification of operational amplifiers|url= https://www.aef.se/Amatortidningar/Radio_och_Television/radio_television_1969-01-ocr.pdf|magazine= Radio & Television - Nr 1 - 1969|page= 14|access-date= 2019-08-04}}</ref> stabilized [[rectifiers]] and DC/DC converters.<ref name=":0" /> The other large group of products were equipment for audio production and distribution, from pre- and power-amplifiers to audio mixers and complete [[PA systems]]. A famous product was the DD-10 power amplifier that could be found in many audio locations. Their products had a reputation for durability and in one of Xelex brochures from the 1970s they used a slogan "If you drop a Xelex amplifier on the floor, it is probably the floor that will be damaged". Among the customers for audio equipment were the national broadcasters [[Sveriges Radio]]<ref name=":0" /> and [[NRK|Norsk rikskrinkasting]].<ref name=":0" /><ref>{{cite web|url=http://www.cfuttrup.com/history/bjorn_borja.html|title=Bjørn Børja|access-date=2019-08-16}}</ref>
-Xelex AB was acquired in 1985 by [[Datatronic AB]]<ref>{{cite web|title=Datatronic tar över Xelex AB|trans-title= Datatronic acquires Xelex AB|url=https://www.svd.se/arkiv/1985-05-17/33|date=1985-05-17|magazine=Svenska Dagbladet|accessdate=2018-11-27}}</ref> and Olsson stayed for a short time as a consultant. The name was changed to "Xelex Elektronik AB" and the focus of the company changed into developing and manufacture among other things, cost effective satellite receivers for home users. After Datatronics acquisition of [[Victor Technology]], also handheld computers were manufactured. Xelex were also responsible for the manufacturing of Victor's M-series computer. [[Tandy Corporation]] acquired Victor in 1989 and Xelex ceased to operate in 1990. The name "Xelex" has later been used by the Swedish chip manufacturer [[Xelerated]] but their activity has nothing to do with the original Xelex.
+Xelex AB was acquired in 1985 by [[Datatronic AB]]<ref>{{cite news|title=Datatronic tar över Xelex AB|trans-title= Datatronic acquires Xelex AB|url=https://www.svd.se/arkiv/1985-05-17/33|date=1985-05-17|magazine=Svenska Dagbladet|access-date=2018-11-27}}</ref> and Olsson stayed for a short time as a consultant. The name was changed to "Xelex Elektronik AB" and the focus of the company changed into developing and manufacture among other things, cost effective satellite receivers for home users. After Datatronics acquisition of [[Victor Technology]], also handheld computers were manufactured. Xelex were also responsible for the manufacturing of Victor's M-series computer. [[Tandy Corporation]] acquired Victor in 1989 and Xelex ceased to operate in 1990. The name "Xelex" has later been used by the Swedish chip manufacturer [[Xelerated]] but their activity has nothing to do with the original Xelex.
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 {{notelist}}
+{{authority control}}
-{{DEFAULTSORT:Olsson, Bengt G.}}
-[[:Category:1924 births]]
-[[:Category:2015 deaths]]
-[[:Category:Swedish inventors]]
-[[:Category:Chalmers University of Technology alumni]]
-[[:Category:Senior Members of the IEEE]]
-[[:Category:20th-century Swedish engineers]]
-[[:Category:Swedish technology company founders]]
+{{DEFAULTSORT:Olsson, Bengt Gustaf}}
-{{AFC submission|||ts=20190805090156|u=BeowulfSE|ns=2}}
+[[Category:Chalmers University of Technology alumni]]
+[[Category:20th-century Swedish engineers]]
+[[Category:1924 births]]
+[[Category:2015 deaths]]
+[[Category:20th-century Swedish inventors]]
+[[Category:Senior members of the IEEE]]
+[[Category:Swedish technology company founders]]
+[[Category:People from Bengtsfors Municipality]]