On Sun, 02 Jun 2013 14:05:36 -0500, John S wrote:> On 6/2/2013 12:39 PM, Fred Abse wrote: >> On Sun, 02 Jun 2013 09:41:09 -0700, Fred Abse wrote: >> >>> Zetex app. note ANB8. >> >> That should have been AN88. >> > > $14 a pop from Digikey! > > Also, could not find AN88 but did find AN8.Sorry, my bad. AN8 it is. -- "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)
low power, HV-in regulator with depletion mosfet
Started by ●June 1, 2013
Reply by ●June 2, 20132013-06-02
Reply by ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 09:36:04 -0700, Fred Abse <excretatauris@invalid.invalid> wrote:>On Sun, 02 Jun 2013 12:18:42 -0400, Jamie wrote: > >> Would be nice if there was a way to have the lib file show up in the >> parts list instead of using a directive to include the .lib maybe there >> is and I am just not seeing it. > >* >*DN2540 MODEL >* >.MODEL DN2540 NMOS (LEVEL=3 RS=1.05 NSUB=5.0E14 >+DELTA=0.1 KAPPA=0.20 TPG=1 CGDO=3.1716E-10 >+RD=11 VTO=-1.50 VMAX=1.0E7 ETA=0.0223089 >+NFS=6.6E10 TOX=725E-10 LD=1.698E-9 UO=862.425 >+XJ=6.4666E-7 THETA=1.0E-5 CGSO=2.50E-9 L=4.0E-6 >+W=59E-3)If a part has a model name NMOS, how do you tell WHOSE NMOS it is? Just put a "spice directive" into the schematic... .LIB \Path\Filename.lib I do that all the time to avoid conflicting part/model names for different processes. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85140 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 ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 09:18:42 -0700, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:>On Sun, 02 Jun 2013 08:20:49 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Sat, 01 Jun 2013 10:52:53 -0700, John Larkin >><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: >> >>Looks remarkably like... >> >> www.analog-innovations.com/SED/SingleLoopController_00056_MOD3.pdf >> >>dating back to October, 2012, which Larkin roundly criticized. >> >>Don't the same criticisms apply now ?>:-} > > >Yes. The problem with your circuit was that the charge pump wouldn't work, which >I pointed out and you subsequently realized. Your assumed Vrect waveform won't >be available in a real-life offline power supply. > >You posted two unsuccessful circuits to solve the startup problem, and then >declared that your third one works. But you never posted that one. Why not?Wake up and learn to read... the regulator portion is the very same as yours, predating "yours" by 8 months. The discussion here is not about charge pumps, it's about depletion-mode regulators. Why don't you see if you can "guess" the final version? Actually I think I DID post it. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85140 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 ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 09:22:48 -0700, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:>On Sun, 02 Jun 2013 09:16:31 -0700, Fred Abse <excretatauris@invalid.invalid> >wrote: > >>On Sun, 02 Jun 2013 08:44:28 -0700, John Larkin wrote: >> >>> I just dumped the Supertex file into the LT Spice lib\sub folder and it worked >>> fine. >> >>So did I. It worked fine. >> >>Then I saw the Spice error log ;-) > >It's just whining. Ignore it.--- And believe you, who won't even address the errors, let alone try to correct them? Not likely. -- JF
Reply by ●June 2, 20132013-06-02
John Fields wrote:> On Sun, 02 Jun 2013 09:22:48 -0700, John Larkin > <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: > > >>On Sun, 02 Jun 2013 09:16:31 -0700, Fred Abse <excretatauris@invalid.invalid> >>wrote: >> >> >>>On Sun, 02 Jun 2013 08:44:28 -0700, John Larkin wrote: >>> >>> >>>>I just dumped the Supertex file into the LT Spice lib\sub folder and it worked >>>>fine. >>> >>>So did I. It worked fine. >>> >>>Then I saw the Spice error log ;-) >> >>It's just whining. Ignore it. > > > --- > And believe you, who won't even address the errors, let alone try to > correct them? > > Not likely. >You know, if you don't look for it, you'd never know.. Jamie
Reply by ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 12:41:05 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Sun, 02 Jun 2013 09:18:42 -0700, John Larkin ><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: > >>On Sun, 02 Jun 2013 08:20:49 -0700, Jim Thompson >><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>>On Sat, 01 Jun 2013 10:52:53 -0700, John Larkin >>><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: >>> >>>Looks remarkably like... >>> >>> www.analog-innovations.com/SED/SingleLoopController_00056_MOD3.pdf >>> >>>dating back to October, 2012, which Larkin roundly criticized. >>> >>>Don't the same criticisms apply now ?>:-} >> >> >>Yes. The problem with your circuit was that the charge pump wouldn't work, which >>I pointed out and you subsequently realized. Your assumed Vrect waveform won't >>be available in a real-life offline power supply. >> >>You posted two unsuccessful circuits to solve the startup problem, and then >>declared that your third one works. But you never posted that one. Why not? > >Wake up and learn to read... the regulator portion is the very same as >yours, predating "yours" by 8 months.The topology is at least 70 years old. It was done with two vacuum tubes and one VR tube, same as the topology I posted, except that there usually wasn't an explicit current-limiting resistor.> >The discussion here is not about charge pumps, it's about >depletion-mode regulators.It's about circuits that work, and ones that won't work. Mine works, yours doesn't.> >Why don't you see if you can "guess" the final version?That's your favorite trick, claiming you can do stuff without revealing how. Whatever you did, it's probably clumsy. Actually I>think I DID post it.That's senility talking. I asked several times, and I don't recall you ever posting anything that will actually work. Post it now. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Reply by ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 14:44:27 -0500, John Fields <jfields@austininstruments.com> wrote:>On Sun, 02 Jun 2013 09:22:48 -0700, John Larkin ><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: > >>On Sun, 02 Jun 2013 09:16:31 -0700, Fred Abse <excretatauris@invalid.invalid> >>wrote: >> >>>On Sun, 02 Jun 2013 08:44:28 -0700, John Larkin wrote: >>> >>>> I just dumped the Supertex file into the LT Spice lib\sub folder and it worked >>>> fine. >>> >>>So did I. It worked fine. >>> >>>Then I saw the Spice error log ;-) >> >>It's just whining. Ignore it. > >--- >And believe you, who won't even address the errors, let alone try to >correct them? > >Not likely.They're just warnings. I could edit out the END directives, but why bother? The model works. You're just whining, too. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Reply by ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 14:01:07 -0500, John Fields <jfields@austininstruments.com> wrote:>On Sun, 02 Jun 2013 08:44:28 -0700, John Larkin ><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: > >>On Sun, 02 Jun 2013 08:22:45 -0700, Fred Abse <excretatauris@invalid.invalid> >>wrote: >> >>>On Sat, 01 Jun 2013 11:37:50 -0700, John Larkin wrote: >>> >>>> On Sat, 01 Jun 2013 13:34:22 -0500, John Fields <jfields@austininstruments.com> >>>> wrote: >>>> >>>>>On Sat, 01 Jun 2013 10:52:53 -0700, John Larkin >>>>><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: >>>>> >>>>>--- >>>>><Snipped LTspice circuit list.> >>>>> >>>>>And the elusive supertex.lib file, which LTspice declares is nowhere >>>>>to be found, is to be found, where??? >>>>> >>>>> >>>> >>>> It's in plain sight, hardly elusive. >>>> >>>> Try Google. Or Supertex.com. >>> >>>It consists of .MODELs, but each ends in an .ENDS. Syntax error. .MODELS >>>don't take .ENDS, that's for SUBCKTS, >>> >>>Fills up the SPICE error log with warnings. Get rid of the .ENDS >>>statements. >> >>I just dumped the Supertex file into the LT Spice lib\sub folder and it worked >>fine. > >--- >Regardless, that's a dangerous protocol to follow because whatever you >"dump" into any LTspice folders over which Linear Tech exercises >control can be deleted at their convenience or, as a matter of course, >during synchronization.Then I'd put it back.> >A much better approach is to upload all of the files to a single >directory, somewhere, and then have your readers download them all >into a single folder. > >The beauty in that is that all of the data needed to run that sim will >be local to that file, making it truly portable as long as the circuit >list *.asc file is associated with LTspice. > >Helmut has posted the procedure over and over again for those of us >who are slow to catch on.Quit whining and design something. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Reply by ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 14:05:36 -0500, John S <Sophi.2@invalid.org> wrote:>On 6/2/2013 12:39 PM, Fred Abse wrote: >> On Sun, 02 Jun 2013 09:41:09 -0700, Fred Abse wrote: >> >>> Zetex app. note ANB8. >> >> That should have been AN88. >> > >$14 a pop from Digikey!Not a bad deal for what it does. They are made in Russia, probably on an old non-epitaxial diffused transistor production line. Note the remarkable Ft. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Reply by ●June 2, 20132013-06-02
On Sun, 02 Jun 2013 16:11:02 -0700, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:>On Sun, 02 Jun 2013 12:41:05 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Sun, 02 Jun 2013 09:18:42 -0700, John Larkin >><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: >> >>>On Sun, 02 Jun 2013 08:20:49 -0700, Jim Thompson >>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>> >>>>On Sat, 01 Jun 2013 10:52:53 -0700, John Larkin >>>><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: >>>> >>>>Looks remarkably like... >>>> >>>> www.analog-innovations.com/SED/SingleLoopController_00056_MOD3.pdf >>>> >>>>dating back to October, 2012, which Larkin roundly criticized. >>>> >>>>Don't the same criticisms apply now ?>:-} >>> >>> >>>Yes. The problem with your circuit was that the charge pump wouldn't work, which >>>I pointed out and you subsequently realized. Your assumed Vrect waveform won't >>>be available in a real-life offline power supply. >>> >>>You posted two unsuccessful circuits to solve the startup problem, and then >>>declared that your third one works. But you never posted that one. Why not? >> >>Wake up and learn to read... the regulator portion is the very same as >>yours, predating "yours" by 8 months. > >The topology is at least 70 years old. It was done with two vacuum tubes and one >VR tube, same as the topology I posted, except that there usually wasn't an >explicit current-limiting resistor. > >> >>The discussion here is not about charge pumps, it's about >>depletion-mode regulators. > >It's about circuits that work, and ones that won't work. > >Mine works, yours doesn't. > > >> >>Why don't you see if you can "guess" the final version? > >That's your favorite trick, claiming you can do stuff without revealing how. >Whatever you did, it's probably clumsy. > > > Actually I >>think I DID post it. > >That's senility talking. I asked several times, and I don't recall you ever >posting anything that will actually work. > >Post it now.Beg for it >:-} ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85140 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.
