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From: Tim Williams on 17 Feb 2010 17:35 "Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com> wrote in message news:09ron51j81ndidogudcsm551ckionnn80g(a)4ax.com... > Data spewed forth from a tractor feed printer: > > .001 * > .002 * > .003 * > .004 * > > etc. Anyone else remember those days? Ha, I have a text book that contains problems in SPICE. Not PSpice. I'm astonished that the book is only 1989, and not older! Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: Fred Bartoli on 17 Feb 2010 18:40 Joerg a �crit : > Fred Bartoli wrote: >> Fred Abse a �crit : >>> On Wed, 17 Feb 2010 07:26:20 -0800, JosephKK wrote: >>> >>>> Geez, did everybody forget the three phase rectifier efficiency that >>>> Fred Bartoli did for me? Note the stepped load on the right. >>> >>> T'warn't Fred Bartoli,t'was I :-) >>> >> >> Oh, I thought even I forgot about it :-) >> >> Well, I don't use much LTspice thanks to its poor GUI, so I couldn't >> have done it... >> > > You guys are spoiled, or too young. Back when I started the "GUI" of > PSpice consisted of a rather small green CRT hanging off some CGA card. > I had the deluxe edition, a CRT in nicotine-yellow :-) > Well, I did lots of *real design* before committing spice, which happened on the late, maybe 10 years ago... I often do complicated projects where many design options have to be studied, and when the GUI stands in the way, it's a no-no. The small sensor I'm finishing right now is a good example. As was also the PSU that powers the DUTs on testers used to wafer test the INTEL and AMD CPUs. (Yep, all your nice CPUs are tested by my design :-) When I did that (circa 2000) I estimated it would have taken 3 to 4 more time on the design pass with another spice, not even speaking of LTspice. -- Thanks, Fred.
From: Joerg on 17 Feb 2010 19:10 Jim Thompson wrote: > On Wed, 17 Feb 2010 14:25:26 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > >> Fred Bartoli wrote: >>> Fred Abse a �crit : >>>> On Wed, 17 Feb 2010 07:26:20 -0800, JosephKK wrote: >>>> >>>>> Geez, did everybody forget the three phase rectifier efficiency that >>>>> Fred Bartoli did for me? Note the stepped load on the right. >>>> T'warn't Fred Bartoli,t'was I :-) >>>> >>> Oh, I thought even I forgot about it :-) >>> >>> Well, I don't use much LTspice thanks to its poor GUI, so I couldn't >>> have done it... >>> >> You guys are spoiled, or too young. Back when I started the "GUI" of >> PSpice consisted of a rather small green CRT hanging off some CGA card. >> I had the deluxe edition, a CRT in nicotine-yellow :-) > > Sheeeesh! When I started using Spice I drew schematics on paper pads, > numbered the nodes, typed in the netlist and ran it under DOS. > > Aaron eased my pain by writing a pre/post version controller which > numbered all the .CIR and .DAT files so I could keep track of all the > changes. > > Data spewed forth from a tractor feed printer: > > .001 * > .002 * > .003 * > .004 * > > etc. Anyone else remember those days? > A friend of mine tried this with a Commodore daisy wheel printer, same that I used to have. It could do microstepping and he just used the dot. Which consequently wore out real fast ... My first forays in to computing was writing Fortran. Using a Juki punch card machine. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 17 Feb 2010 19:13 Fred Bartoli wrote: > Joerg a �crit : >> Fred Bartoli wrote: >>> Fred Abse a �crit : >>>> On Wed, 17 Feb 2010 07:26:20 -0800, JosephKK wrote: >>>> >>>>> Geez, did everybody forget the three phase rectifier efficiency >>>>> that Fred Bartoli did for me? Note the stepped load on the right. >>>> >>>> T'warn't Fred Bartoli,t'was I :-) >>>> >>> >>> Oh, I thought even I forgot about it :-) >>> >>> Well, I don't use much LTspice thanks to its poor GUI, so I couldn't >>> have done it... >>> >> >> You guys are spoiled, or too young. Back when I started the "GUI" of >> PSpice consisted of a rather small green CRT hanging off some CGA >> card. I had the deluxe edition, a CRT in nicotine-yellow :-) >> > > Well, I did lots of *real design* before committing spice, which > happened on the late, maybe 10 years ago... > > I often do complicated projects where many design options have to be > studied, and when the GUI stands in the way, it's a no-no. > > The small sensor I'm finishing right now is a good example. > As was also the PSU that powers the DUTs on testers used to wafer test > the INTEL and AMD CPUs. (Yep, all your nice CPUs are tested by my design > :-) I always knew that the Romans never completely subdued you guys and you'd come back :-) > When I did that (circa 2000) I estimated it would have taken 3 to 4 more > time on the design pass with another spice, not even speaking of LTspice. > Much of my stuff can't even possibly be simulated. Like a lot of transducers. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 17 Feb 2010 19:31
On Wed, 17 Feb 2010 16:10:13 -0800, Joerg <invalid(a)invalid.invalid> wrote: >Jim Thompson wrote: >> On Wed, 17 Feb 2010 14:25:26 -0800, Joerg <invalid(a)invalid.invalid> >> wrote: >> >>> Fred Bartoli wrote: >>>> Fred Abse a �crit : >>>>> On Wed, 17 Feb 2010 07:26:20 -0800, JosephKK wrote: >>>>> >>>>>> Geez, did everybody forget the three phase rectifier efficiency that >>>>>> Fred Bartoli did for me? Note the stepped load on the right. >>>>> T'warn't Fred Bartoli,t'was I :-) >>>>> >>>> Oh, I thought even I forgot about it :-) >>>> >>>> Well, I don't use much LTspice thanks to its poor GUI, so I couldn't >>>> have done it... >>>> >>> You guys are spoiled, or too young. Back when I started the "GUI" of >>> PSpice consisted of a rather small green CRT hanging off some CGA card. >>> I had the deluxe edition, a CRT in nicotine-yellow :-) >> >> Sheeeesh! When I started using Spice I drew schematics on paper pads, >> numbered the nodes, typed in the netlist and ran it under DOS. >> >> Aaron eased my pain by writing a pre/post version controller which >> numbered all the .CIR and .DAT files so I could keep track of all the >> changes. >> >> Data spewed forth from a tractor feed printer: >> >> .001 * >> .002 * >> .003 * >> .004 * >> >> etc. Anyone else remember those days? >> > >A friend of mine tried this with a Commodore daisy wheel printer, same >that I used to have. It could do microstepping and he just used the dot. >Which consequently wore out real fast ... > >My first forays in to computing was writing Fortran. Using a Juki punch >card machine. Summer of 1961 I took a sequence of courses on the Institute's first transistorized mainframe (IIRC IBM 709 ?), FAP (machine language) and FORTRAN... lots of punched cards... don't drop your stack ;-) ...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. |