Hi I am looking for the original paper from 1954 that George Royer did on his Royer converter circuit: "Transistors as on-off switches in saturable-core circuits" in Electrical Manufactoring Anyone know where I can get this? Regards Klaus
Original Royer paper
Started by ●November 7, 2011
Reply by ●November 7, 20112011-11-07
On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund <klauskvik@hotmail.com> wrote:>Hi > >I am looking for the original paper from 1954 that George Royer did on >his Royer converter circuit: > >"Transistors as on-off switches in saturable-core circuits" in >Electrical Manufactoring > >Anyone know where I can get this? > >Regards > >Klaus1954? There weren't a lot of transistors around in 1954... only Geranium junk, surface-barrier and point contact ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 7, 20112011-11-07
On Mon, 07 Nov 2011 16:59:51 -0700, the renowned Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund ><klauskvik@hotmail.com> wrote: > >>Hi >> >>I am looking for the original paper from 1954 that George Royer did on >>his Royer converter circuit: >> >>"Transistors as on-off switches in saturable-core circuits" in >>Electrical Manufactoring >> >>Anyone know where I can get this? >> >>Regards >> >>Klaus > >1954? There weren't a lot of transistors around in 1954... only >Geranium junk, surface-barrier and point contact ;-) > > ...Jim ThompsonRoyer used the Westinghouse 2N74, apparently. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Reply by ●November 7, 20112011-11-07
On Mon, 07 Nov 2011 19:10:40 -0500, Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> wrote:>On Mon, 07 Nov 2011 16:59:51 -0700, the renowned Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund >><klauskvik@hotmail.com> wrote: >> >>>Hi >>> >>>I am looking for the original paper from 1954 that George Royer did on >>>his Royer converter circuit: >>> >>>"Transistors as on-off switches in saturable-core circuits" in >>>Electrical Manufactoring >>> >>>Anyone know where I can get this? >>> >>>Regards >>> >>>Klaus >> >>1954? There weren't a lot of transistors around in 1954... only >>Geranium junk, surface-barrier and point contact ;-) >> >> ...Jim Thompson > >Royer used the Westinghouse 2N74, apparently. > > >Best regards, >Spehro PefhanyTrying to remember... one of those pinch-seal TO-5's? I used to have an ancient GE manual, but the silverfish ate it :-( ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 7, 20112011-11-07
Jim Thompson wrote:> On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund > <klauskvik@hotmail.com> wrote: > >> Hi >> >> I am looking for the original paper from 1954 that George Royer did on >> his Royer converter circuit: >> >> "Transistors as on-off switches in saturable-core circuits" in >> Electrical Manufactoring >> >> Anyone know where I can get this? >> >> Regards >> >> Klaus > > 1954? There weren't a lot of transistors around in 1954... only > Geranium junk, surface-barrier and point contact ;-) > > ...Jim ThompsonIn 1951-1952, at North American, we built an entire solid-state airborne radar. Only the magnetron was a vacuum tube, and it was pulsed by a magnetic core pulse generator, on which I have a patent. The display did use a standard CRT. Most of the transistors were from Texas Instruments and were used in low power RF and video circuits. -- Virg Wall
Reply by ●November 7, 20112011-11-07
"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote in message news:54ugb7t4hhkhqd6lh9ssnnms8e8u7pbquv@4ax.com...> On Mon, 07 Nov 2011 19:10:40 -0500, Spehro Pefhany > <speffSNIP@interlogDOTyou.knowwhat> wrote: > >>On Mon, 07 Nov 2011 16:59:51 -0700, the renowned Jim Thompson >><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>>On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund >>><klauskvik@hotmail.com> wrote: >>> >>>>Hi >>>> >>>>I am looking for the original paper from 1954 that George Royer did >>>>on >>>>his Royer converter circuit: >>>> >>>>"Transistors as on-off switches in saturable-core circuits" in >>>>Electrical Manufactoring >>>> >>>>Anyone know where I can get this? >>>> >>>>Regards >>>> >>>>Klaus >>> >>>1954? There weren't a lot of transistors around in 1954... only >>>Geranium junk, surface-barrier and point contact ;-) >>> >>> ...Jim Thompson >> >>Royer used the Westinghouse 2N74, apparently. >> >> >>Best regards, >>Spehro Pefhany > > Trying to remember... one of those pinch-seal TO-5's? I used to have > an ancient GE manual, but the silverfish ate it :-( > > ...Jim ThompsonIt's listed in the 1958 GE manual I have. Cheers
Reply by ●November 7, 20112011-11-07
On Mon, 07 Nov 2011 17:37:42 -0700, the renowned Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Mon, 07 Nov 2011 19:10:40 -0500, Spehro Pefhany ><speffSNIP@interlogDOTyou.knowwhat> wrote: > >>On Mon, 07 Nov 2011 16:59:51 -0700, the renowned Jim Thompson >><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>>On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund >>><klauskvik@hotmail.com> wrote: >>> >>>>Hi >>>> >>>>I am looking for the original paper from 1954 that George Royer did on >>>>his Royer converter circuit: >>>> >>>>"Transistors as on-off switches in saturable-core circuits" in >>>>Electrical Manufactoring >>>> >>>>Anyone know where I can get this? >>>> >>>>Regards >>>> >>>>Klaus >>> >>>1954? There weren't a lot of transistors around in 1954... only >>>Geranium junk, surface-barrier and point contact ;-) >>> >>> ...Jim Thompson >> >>Royer used the Westinghouse 2N74, apparently. >> >> >>Best regards, >>Spehro Pefhany > >Trying to remember... one of those pinch-seal TO-5's? I used to have >an ancient GE manual, but the silverfish ate it :-( > > ...Jim ThompsonIt's before my time, Jim. I don't have anything listed that has fewer than 3 digits after the '2N'. Here's a photo of one: http://homepages.nildram.co.uk/~wylie/2Nseries/2N74.jpg and the pinout: http://www.transparentsound.com/transistors/vintage-transistors/Jedec/Transistor_outline_09.gif PNP 200mW 50V AF SW, probably alloy type (point contact types were only 50mW). 2N76 -79 types had hfe of 20-55 and ft of around 1MHz. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Reply by ●November 8, 20112011-11-08
On Nov 8, 12:56=A0am, Klaus Kragelund <klausk...@hotmail.com> wrote:> Hi > > I am looking for the original paper from 1954 that George Royer did on > his Royer converter circuit: > > "Transistors as on-off switches in saturable-core circuits" in > Electrical Manufactoring > > Anyone know where I can get this?Jim Williams did. From his AN-55 http://cds.linear.com/docs/Application%20Note/an55fa.pdf Bright, Pittman and Royer, =93Transistors as On-Off Switches in Saturable Core Circuits,=94 Electrical Manufacturing, December 1954. Available from Technomic Publishing, Lancaster, PA. -- Bill Sloman, Nijmegen
Reply by ●November 8, 20112011-11-08
On Mon, 07 Nov 2011 22:15:38 -0500, Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> wrote:>On Mon, 07 Nov 2011 17:37:42 -0700, the renowned Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Mon, 07 Nov 2011 19:10:40 -0500, Spehro Pefhany >><speffSNIP@interlogDOTyou.knowwhat> wrote: >> >>>On Mon, 07 Nov 2011 16:59:51 -0700, the renowned Jim Thompson >>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>> >>>>On Mon, 7 Nov 2011 15:56:24 -0800 (PST), Klaus Kragelund >>>><klauskvik@hotmail.com> wrote: >>>> >>>>>Hi >>>>> >>>>>I am looking for the original paper from 1954 that George Royer did on >>>>>his Royer converter circuit: >>>>> >>>>>"Transistors as on-off switches in saturable-core circuits" in >>>>>Electrical Manufactoring >>>>> >>>>>Anyone know where I can get this? >>>>> >>>>>Regards >>>>> >>>>>Klaus >>>> >>>>1954? There weren't a lot of transistors around in 1954... only >>>>Geranium junk, surface-barrier and point contact ;-) >>>> >>>> ...Jim Thompson >>> >>>Royer used the Westinghouse 2N74, apparently. >>> >>> >>>Best regards, >>>Spehro Pefhany >> >>Trying to remember... one of those pinch-seal TO-5's? I used to have >>an ancient GE manual, but the silverfish ate it :-( >> >> ...Jim Thompson > >It's before my time, Jim. I don't have anything listed that has fewer >than 3 digits after the '2N'. > >Here's a photo of one: >http://homepages.nildram.co.uk/~wylie/2Nseries/2N74.jpgMy! My! I never saw one of those. (But I was only 14 at the time ;-) My first transistors were CK722 and CK760 in 1956, when my father became a Raytheon wholesaler.> >and the pinout: >http://www.transparentsound.com/transistors/vintage-transistors/Jedec/Transistor_outline_09.gif > >PNP 200mW 50V AF SW, probably alloy type (point contact types were >only 50mW). 2N76 -79 types had hfe of 20-55 and ft of around 1MHz. > > > >Best regards, >Spehro Pefhany...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 8, 20112011-11-08
On Nov 8, 4:27=A0am, Bill Sloman <bill.slo...@ieee.org> wrote:> On Nov 8, 12:56=A0am, Klaus Kragelund <klausk...@hotmail.com> wrote: > > > Hi > > > I am looking for the original paper from 1954 that George Royer did on > > his Royer converter circuit: > > > "Transistors as on-off switches in saturable-core circuits" in > > Electrical Manufactoring > > > Anyone know where I can get this? > > Jim Williams did. From his AN-55 > > http://cds.linear.com/docs/Application%20Note/an55fa.pdf > > Bright, Pittman and Royer, =93Transistors as On-Off > Switches in Saturable Core Circuits,=94 Electrical > Manufacturing, December 1954. Available from > Technomic Publishing, Lancaster, PA. > > -- > Bill Sloman, NijmegenBill, didn't you (or someone else) have a copy of this paper? I think someone sent me a pdf via email (upon request). I can't seem to 'unearth' it at the moment... about time to do a desk cleaning/ filing. George H.
