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low power, HV-in regulator with depletion mosfet

Started by John Larkin June 1, 2013
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.
Here it is, NOLA white trash... http://www.analog-innovations.com/SED/DepletionModeRegulatorWithBootstrap.pdf Now stop with the bloviating bull-shit. ...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.
On Sun, 02 Jun 2013 16:49:01 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

>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. > >Here it is, NOLA white trash... > >http://www.analog-innovations.com/SED/DepletionModeRegulatorWithBootstrap.pdf > >Now stop with the bloviating bull-shit. > > ...Jim Thompson
Hilarious, parts-rich hack, as usual. It looks like it blew up at first, so you had to add R17. If it's in production, why the question marks? Where can I buy those 1Nxxxx diodes? -- 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
On Sun, 02 Jun 2013 16:38:06 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

>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
I didn't, because I knew you couldn't stand to not post it. You held out for all of 10 minutes. What a wuss you are. -- 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
On Sun, 02 Jun 2013 17:00:50 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

>On Sun, 02 Jun 2013 16:38:06 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>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 > >I didn't, because I knew you couldn't stand to not post it. You held out for all >of 10 minutes. > >What a wuss you are.
Better than a NOLA fuck-head with white-trash parents. ...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.
On Sun, 02 Jun 2013 16:58:53 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

>On Sun, 02 Jun 2013 16:49:01 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>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. >> >>Here it is, NOLA white trash... >> >>http://www.analog-innovations.com/SED/DepletionModeRegulatorWithBootstrap.pdf >> >>Now stop with the bloviating bull-shit. >> >> ...Jim Thompson > >Hilarious, parts-rich hack, as usual. It looks like it blew up at first, so you >had to add R17. > >If it's in production, why the question marks?
Dumb as a stump, you are. This is an October 2012 drawing. It's been in production since then. The markings simply reflect banter between me and the power supply manufacturer in New Zealand. Of course, you, Larkin, wouldn't actually know how round-the-world team designing works. Larkin is a NOLA white-trash fuck-head... and that's an accurate description. Pecksniffian echo (you know who you are), avoid getting involved. I'm going hunting...
> >Where can I buy those 1Nxxxx diodes?
My magical part, just dial-in the desired part number >:-} I have libraries for everything. Larkin can't even get one part right. ...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.
On Saturday, June 1, 2013 1:52:53 PM UTC-4, John Larkin wrote:

That's amateurish. See the write-up for Figure 10 and use a cheap $0.17 78L12 that gets you where you need to be.
http://www.ixys.com/Documents/AppNotes/IXAN0063.pdf
On Sun, 2 Jun 2013 20:11:22 -0700 (PDT), bloggs.fredbloggs.fred@gmail.com wrote:

>On Saturday, June 1, 2013 1:52:53 PM UTC-4, John Larkin wrote: > >That's amateurish. See the write-up for Figure 10 and use a cheap $0.17 78L12 that gets you where you need to be. >http://www.ixys.com/Documents/AppNotes/IXAN0063.pdf
That's OK, but it probably doesn't guarantee the 78L12 dropout voltage. -- 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
On Monday, June 3, 2013 12:07:35 AM UTC-4, John Larkin wrote:

>=20 > That's OK, but it probably doesn't guarantee the 78L12 dropout voltage.=
=20
>=20
Just OK??? It's a complete precision regulator. This may come as a surprise= to you but the 3-terminal regulator forces the VGS of the depletion FET to= support its current and not the other way around. If you need an absolute = guarantee, there is a simple (almost trivial) way to make the voltage diffe= rential across the 3-terminal stay above the minimum dropout threshold, whi= ch will be left as an exercise for the student. =20
>=20 >=20 > John Larkin Highland Technology Inc >=20 > www.highlandtechnology.com jlarkin at highlandtechnology dot com =20 >=20 >=20 >=20 > Precision electronic instrumentation >=20 > Picosecond-resolution Digital Delay and Pulse generators >=20 > Custom timing and laser controllers >=20 > Photonics and fiberoptic TTL data links >=20 > VME analog, thermocouple, LVDT, synchro, tachometer >=20 > Multichannel arbitrary waveform generators
On Sun, 02 Jun 2013 16:16:02 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

>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.
--- Yeah, sure. Then they'd wipe it out and you'd put it back in again, and they'd wipe it out again and so on, ad infinitum? You're a childish hypocrite who'd bite off his nose to spite his face when he's given good counsel. ---
>> >>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.
--- I notice you're starting to accuse everyone of whining lately; seems like it's your favorite way of avoiding issues you can't deal with. Cheap trick, even for a curmudgeon like you. As far as designs go, I just did a little topology for panfilero and posted a link to a data sheet where he could glean the information required to finish the design and flesh out the circuit. You, on the other hand, posted not just one, but _three_ cockamamie bullshit circuits using pass transistors for 1.5mA load currents and no help for panfilero to go forward with the design. Laughable, to say the least, but it seems that in an effort to elicit guffaws from your readers you actually specify _depletion_ mode transistors! Well done; I think everyone got a good laugh out of it. -- JF
John Larkin wrote:

> On Sun, 2 Jun 2013 20:11:22 -0700 (PDT), bloggs.fredbloggs.fred@gmail.com wrote: > > >>On Saturday, June 1, 2013 1:52:53 PM UTC-4, John Larkin wrote: >> >>That's amateurish. See the write-up for Figure 10 and use a cheap $0.17 78L12 that gets you where you need to be. >>http://www.ixys.com/Documents/AppNotes/IXAN0063.pdf > > > > That's OK, but it probably doesn't guarantee the 78L12 dropout voltage. > >
The gate being connected directly to the output with HV on the other side of the fet, does not give ma a warm and fuzzy feeling with fast transients with all that miller, hope the caps don't fail. I think that circuit needs a crowbar if that was ever seriously put in use. Maybe plant some 1.5k or better type TVSes on those nodes. I don't know if sims would reveal enough collateral damage, the models in Ltspice seem to think they can operate beyond infinity. Just my opinon, don't pay no mind to me, just a foot hill hick. Jamie