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Jim Thompson

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Oct 7, 2012, 6:59:17 PM10/7/12
to
Critiques, suggestions welcome...

http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf

Sand in air ignored.

...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.

Jim Mueller

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Oct 7, 2012, 9:09:30 PM10/7/12
to
On Sun, 07 Oct 2012 15:59:17 -0700, Jim Thompson wrote:

> Critiques, suggestions welcome...
>
> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>
> Sand in air ignored.
>
> ...Jim Thompson

Your simulation doesn't include your power input source, presumably a
rectifier, based on your label. You also don't show us what the input
waveform is (half wave or full wave?) or what the impedance from the
input to common is (does it have a DC return?). All of these affect the
performance of the circuit and need to be included in the simulation.

It would also help if you identified how you got the results,
specifically, which of the many test points shown on the schematic were
used for each plot. You know these things but we can only guess.


--
Jim Mueller wron...@nospam.com

To get my real email address, replace wrongname with dadoheadman.
Then replace nospam with fastmail. Lastly, replace com with us.

Jim Thompson

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Oct 7, 2012, 9:21:58 PM10/7/12
to
On 08 Oct 2012 01:09:30 GMT, Jim Mueller <wron...@nospam.com> wrote:

>On Sun, 07 Oct 2012 15:59:17 -0700, Jim Thompson wrote:
>
>> Critiques, suggestions welcome...
>>
>> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>>
>> Sand in air ignored.
>>
>> ...Jim Thompson
>
>Your simulation doesn't include your power input source, presumably a
>rectifier, based on your label.

Full-wave rectified, straight off AC line. +VRECT to -VDC

>You also don't show us what the input
>waveform is (half wave or full wave?) or what the impedance from the
>input to common is (does it have a DC return?). All of these affect the
>performance of the circuit and need to be included in the simulation.
>
>It would also help if you identified how you got the results,
>specifically, which of the many test points shown on the schematic were
>used for each plot. You know these things but we can only guess.

You should be able to find all the nodes on the schematic?

John Larkin

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Oct 7, 2012, 10:26:05 PM10/7/12
to
On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson
<To-Email-Use-Th...@On-My-Web-Site.com> wrote:

>On 08 Oct 2012 01:09:30 GMT, Jim Mueller <wron...@nospam.com> wrote:
>
>>On Sun, 07 Oct 2012 15:59:17 -0700, Jim Thompson wrote:
>>
>>> Critiques, suggestions welcome...
>>>
>>> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>>>
>>> Sand in air ignored.
>>>
>>> ...Jim Thompson
>>
>>Your simulation doesn't include your power input source, presumably a
>>rectifier, based on your label.
>
>Full-wave rectified, straight off AC line. +VRECT to -VDC

You didn't show the Vrect waveform. What pulls it down? A bridge
rectifier without some pulldown can't keep sloshing charge into/out of
the current limiting capacitor.

Replace Vrect with a floating AC supply and a bridge rectifier, and it
won't work.


--

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

Jim Thompson

unread,
Oct 7, 2012, 11:45:01 PM10/7/12
to
On Sun, 07 Oct 2012 19:26:05 -0700, John Larkin
<jjla...@highNOTlandTHIStechnologyPART.com> wrote:

>On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson
><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>
>>On 08 Oct 2012 01:09:30 GMT, Jim Mueller <wron...@nospam.com> wrote:
>>
>>>On Sun, 07 Oct 2012 15:59:17 -0700, Jim Thompson wrote:
>>>
>>>> Critiques, suggestions welcome...
>>>>
>>>> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>>>>
>>>> Sand in air ignored.
>>>>
>>>> ...Jim Thompson
>>>
>>>Your simulation doesn't include your power input source, presumably a
>>>rectifier, based on your label.
>>
>>Full-wave rectified, straight off AC line. +VRECT to -VDC
>
>You didn't show the Vrect waveform. What pulls it down? A bridge
>rectifier without some pulldown can't keep sloshing charge into/out of
>the current limiting capacitor.
>
>Replace Vrect with a floating AC supply and a bridge rectifier, and it
>won't work.

Says the fraud. There's lots of pulldown... it's a PFC supply.

John Larkin

unread,
Oct 8, 2012, 12:01:44 AM10/8/12
to
On Sun, 07 Oct 2012 20:45:01 -0700, Jim Thompson
<To-Email-Use-Th...@On-My-Web-Site.com> wrote:

>On Sun, 07 Oct 2012 19:26:05 -0700, John Larkin
><jjla...@highNOTlandTHIStechnologyPART.com> wrote:
>
>>On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson
>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>
>>>On 08 Oct 2012 01:09:30 GMT, Jim Mueller <wron...@nospam.com> wrote:
>>>
>>>>On Sun, 07 Oct 2012 15:59:17 -0700, Jim Thompson wrote:
>>>>
>>>>> Critiques, suggestions welcome...
>>>>>
>>>>> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>>>>>
>>>>> Sand in air ignored.
>>>>>
>>>>> ...Jim Thompson
>>>>
>>>>Your simulation doesn't include your power input source, presumably a
>>>>rectifier, based on your label.
>>>
>>>Full-wave rectified, straight off AC line. +VRECT to -VDC
>>
>>You didn't show the Vrect waveform. What pulls it down? A bridge
>>rectifier without some pulldown can't keep sloshing charge into/out of
>>the current limiting capacitor.
>>
>>Replace Vrect with a floating AC supply and a bridge rectifier, and it
>>won't work.
>
>Says the fraud. There's lots of pulldown... it's a PFC supply.
>
> ...Jim Thompson

Is the PFC supply on all the time? If so, what is this circuit needed
for? It certainly can't be used to start up the PFC, if it needs the
PFC for pulldown.

Rick

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Oct 8, 2012, 6:21:39 AM10/8/12
to

"Jim Thompson" <To-Email-Use-Th...@On-My-Web-Site.com> wrote in
message news:u624785jjmsic2umv...@4ax.com...
Have you built this?
Does it actually work?


Jim Thompson

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Oct 8, 2012, 10:42:02 AM10/8/12
to
On Sun, 07 Oct 2012 21:01:44 -0700, John Larkin
Yep. I think the Chinese are fudging on me. They show me waveforms
with a worst case trough no higher than about 10V off of -VDC. I've
asked a New Zealander (in HK, they sort of speak English :-) to run a
storage scope view from t=0. I will likely just halve the cap and
pick off from a phase... I'm already on the "hot side" any way.

Jim Thompson

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Oct 8, 2012, 10:43:04 AM10/8/12
to
On Mon, 8 Oct 2012 05:21:39 -0500, "Rick" <rik...@bellsouth.net>
wrote:
It will be bread-boarded today (Tuesday HK time).

John Larkin

unread,
Oct 8, 2012, 11:12:21 AM10/8/12
to
On Mon, 08 Oct 2012 07:42:02 -0700, Jim Thompson
You call me a fraud! Clearly you didn't think this through. Looks like
I saved your cookies again. I really should stop doing that.

What's weird is that I pointed out this problem last week, and you're
just now catching on to it.

It's rare for the unloaded output of a bridge rectifier to look
anything like abs(sin(w*t)).

Jim Thompson

unread,
Oct 8, 2012, 11:24:23 AM10/8/12
to
On Mon, 08 Oct 2012 08:12:21 -0700, John Larkin
I was spending my time refining the control for the TRIAC.

>
>It's rare for the unloaded output of a bridge rectifier to look
>anything like abs(sin(w*t)).

The Chinese assured me, and sent a scope photo. The bridge load
capacitance is only 100nF... and there's a whole lot of shit hanging
on there that's "defined" to me only as a block.

But, indeed, your nudging raised my concerns, which is why I've
requested a look-see by an English-speaking buddy.

Which nudging, in normal _discussion_ is great. But your intent seems
only to be an asshole.

John Larkin

unread,
Oct 8, 2012, 12:06:13 PM10/8/12
to
On Mon, 08 Oct 2012 08:24:23 -0700, Jim Thompson
<To-Email-Use-Th...@On-My-Web-Site.com> wrote:

>On Mon, 08 Oct 2012 08:12:21 -0700, John Larkin
><jjla...@highNOTlandTHIStechnologyPART.com> wrote:
>
>>On Mon, 08 Oct 2012 07:42:02 -0700, Jim Thompson
>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>
>>>On Sun, 07 Oct 2012 21:01:44 -0700, John Larkin
>>><jjla...@highNOTlandTHIStechnologyPART.com> wrote:
>>>
>>>>On Sun, 07 Oct 2012 20:45:01 -0700, Jim Thompson
>>>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>>>
>>>>>On Sun, 07 Oct 2012 19:26:05 -0700, John Larkin
>>>>><jjla...@highNOTlandTHIStechnologyPART.com> wrote:
>>>>>
>>>>>>On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson
>>>>>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>>>>>
>>>>>>>On 08 Oct 2012 01:09:30 GMT, Jim Mueller <wron...@nospam.com> wrote:
>>>>>>>
>>>>>>>>On Sun, 07 Oct 2012 15:59:17 -0700, Jim Thompson wrote:
>>>>>>>>
>>>>>>>>> Critiques, suggestions welcome...
>>>>>>>>>
>>>>>>>>> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>>>>>>>>>
>>>>>>>>> Sand in air ignored.
>>>>>>>>>
>>>>>>>>> ...Jim Thompson
>>>>>>>>


==============look here =======================

>>>>>>>>Your simulation doesn't include your power input source, presumably a
>>>>>>>>rectifier, based on your label.
>>>>>>>
>>>>>>>Full-wave rectified, straight off AC line. +VRECT to -VDC
>>>>>>
>>>>>>You didn't show the Vrect waveform. What pulls it down? A bridge
>>>>>>rectifier without some pulldown can't keep sloshing charge into/out of
>>>>>>the current limiting capacitor.
>>>>>>
>>>>>>Replace Vrect with a floating AC supply and a bridge rectifier, and it
>>>>>>won't work.
>>>>>

>>>>>Says the fraud. There's lots of pulldown... it's a PFC supply.

==============look here =======================
Look at the conversation highlighted above. I pointed out the pulldown
problem without personal comment. You replied by calling me a fraud.

Jim Thompson

unread,
Oct 8, 2012, 12:17:29 PM10/8/12
to
On Mon, 08 Oct 2012 09:06:13 -0700, John Larkin
OK. My apologies. How about we limit ourselves to strictly
electronics from now on?

John Larkin

unread,
Oct 8, 2012, 12:34:27 PM10/8/12
to
On Mon, 08 Oct 2012 09:17:29 -0700, Jim Thompson
Apologize, sincerely, for calling my wife a slut, and claiming that I
pimped her.

Ralph Barone

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Oct 8, 2012, 12:39:06 PM10/8/12
to
I for one would like to see this. Of all the possible things I can learn
from you two, new ways to insult people is pretty low on the usefulness
index.

Phil Hobbs

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Oct 8, 2012, 2:35:31 PM10/8/12
to
They aren't even new. They're strictly from the sixth grade, except for
replacing "momma" with "wife".

Cheers

Phil Hobbs

Jim Thompson

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Oct 8, 2012, 2:46:26 PM10/8/12
to
On Mon, 08 Oct 2012 09:34:27 -0700, John Larkin
Wonder why I expected that response?

Jim Thompson

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Oct 8, 2012, 2:47:25 PM10/8/12
to
And "hip boots" with "hats" :-)

John Larkin

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Oct 8, 2012, 2:57:08 PM10/8/12
to
On Mon, 08 Oct 2012 11:46:26 -0700, Jim Thompson
Because you know what a gross asshole you have been, and you haven't
the guts to properly apologize for it.

I guess asking for an apology is silly; it wouldn't make you any less
of a coarse asshole. Why would I want to be friendly with a creep like
you?


--

John Larkin Highland Technology, Inc

jlarkin at highlandtechnology dot com
http://www.highlandtechnology.com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom laser drivers and controllers
Photonics and fiberoptic TTL data links
VME thermocouple, LVDT, synchro acquisition and simulation

Jim Thompson

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Oct 8, 2012, 3:03:23 PM10/8/12
to
Hat tightening up again ?:-) What a complete jerk!

John Larkin

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Oct 8, 2012, 3:13:22 PM10/8/12
to
On Mon, 08 Oct 2012 12:03:23 -0700, Jim Thompson
Well, I honor and value my wife. I suppose you don't honor or value
yours.

That makes sense. Anybody who would marry you, and give up her
education and career to support you, must have something wrong with
her.

rickman

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Oct 8, 2012, 3:23:26 PM10/8/12
to
I don't think I have seen a pair of professionals behave this way
before. This is no different than attending a seminar and finding the
two of you pissing on each others' shoes!

You (both of you) would never behave this way in person or in face to
face public. I think you just don't realize how this looks to the rest
of us.

Rick

Ralph Barone

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Oct 8, 2012, 3:48:44 PM10/8/12
to
This concludes our test of the "civil discourse system". We will now
return to our regular programming, already in progress.

Jim Mueller

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Oct 8, 2012, 4:05:28 PM10/8/12
to
On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson wrote:

>
> You should be able to find all the nodes on the schematic?
>
> ...Jim Thompson

Agreed, they are well marked on the schematic but not on the simulation
results. It would help if the graphs were labeled something like I2
(which matched a current sense point on the schematic).

Phil Hobbs

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Oct 8, 2012, 4:12:57 PM10/8/12
to
Nah, not from one of the main perps.

Cheers

Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot net
http://electrooptical.net

Jim Thompson

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Oct 8, 2012, 4:14:55 PM10/8/12
to
On Mon, 08 Oct 2012 12:13:22 -0700, John Larkin
<jla...@highlandtechnology.com> wrote:

>On Mon, 08 Oct 2012 12:03:23 -0700, Jim Thompson
><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>
>>On Mon, 08 Oct 2012 11:57:08 -0700, John Larkin
>><jla...@highlandtechnology.com> wrote:
>>
>>>On Mon, 08 Oct 2012 11:46:26 -0700, Jim Thompson
>>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>>
[snip]
>
>
>Well, I honor and value my wife. I suppose you don't honor or value
>yours.

Of course I do.

>
>That makes sense. Anybody who would marry you, and give up her
>education and career to support you, must have something wrong with
>her.

There you go, flailing away, being rude and crude, trying to use slime
to cover up that you still can't calculate the inverter interstage
capacitance... in spite of the fact that I practically handed you the
answer on a platter.

petrus bitbyter

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Oct 8, 2012, 6:43:24 PM10/8/12
to

"Ralph Barone" <addre...@invalid.invalid> schreef in bericht
news:1464145457371418354.838988address_is-invalid.invalid@shawnews...
Always thought this NG was on American politics. Looks like I've been
mistaken or this politics are much more dirty I assumed before :)

petrus bitbyter


Jim Thompson

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Oct 8, 2012, 7:53:28 PM10/8/12
to
On 08 Oct 2012 20:05:28 GMT, Jim Mueller <wron...@nospam.com> wrote:

>On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson wrote:
>
>>
>> You should be able to find all the nodes on the schematic?
>>
>> ...Jim Thompson
>
>Agreed, they are well marked on the schematic but not on the simulation
>results. It would help if the graphs were labeled something like I2
>(which matched a current sense point on the schematic).

You've lost me there. Did you carefully read the axis labels? Pick a
simulation waveform and tell me what you can't connect to a schematic
point?

John Fields

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Oct 8, 2012, 8:04:45 PM10/8/12
to
On Mon, 08 Oct 2012 07:42:02 -0700, Jim Thompson
JF

Jim Thompson

unread,
Oct 8, 2012, 8:13:13 PM10/8/12
to
Scheme doesn't work with a full-wave rectifier in place. Works well
in cheapy appliance controllers where it's no rectification other than
the "pump" parts.

John Larkin

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Oct 8, 2012, 11:35:46 PM10/8/12
to
Of course not. He has, several times, threatened to physically assault
me if he got close enough.


--

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

John Larkin

unread,
Oct 8, 2012, 11:36:37 PM10/8/12
to
On Mon, 08 Oct 2012 13:14:55 -0700, Jim Thompson
<To-Email-Use-Th...@On-My-Web-Site.com> wrote:

>On Mon, 08 Oct 2012 12:13:22 -0700, John Larkin
><jla...@highlandtechnology.com> wrote:
>
>>On Mon, 08 Oct 2012 12:03:23 -0700, Jim Thompson
>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>
>>>On Mon, 08 Oct 2012 11:57:08 -0700, John Larkin
>>><jla...@highlandtechnology.com> wrote:
>>>
>>>>On Mon, 08 Oct 2012 11:46:26 -0700, Jim Thompson
>>>><To-Email-Use-Th...@On-My-Web-Site.com> wrote:
>>>>
>[snip]
>>
>>
>>Well, I honor and value my wife. I suppose you don't honor or value
>>yours.
>
>Of course I do.
>
>>
>>That makes sense. Anybody who would marry you, and give up her
>>education and career to support you, must have something wrong with
>>her.
>
>There you go, flailing away, being rude and crude, trying to use slime
>to cover up that you still can't calculate the inverter interstage
>capacitance... in spite of the fact that I practically handed you the
>answer on a platter.
>
> ...Jim Thompson

Demonstrate how.


--

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

Rick

unread,
Oct 9, 2012, 7:22:28 AM10/9/12
to

"Jim Thompson" <To-Email-Use-Th...@On-My-Web-Site.com> wrote in
message news:c3v5789cftjd0dnad...@4ax.com...
YAY!


Jim Thompson

unread,
Oct 9, 2012, 10:11:14 AM10/9/12
to
Standard education issue. If I simply give you the answer you'll
never learn to think things thru yourself ;-)

I told you about "stack ratio" and asked WHERE are the ESD diodes and
pointed you at the data sheet. Everything you need to know is there.

You beat the crap out of me when I missed a bit of information from a
data sheet. Why doesn't the same treatment apply to you? Hmmmm?

Personally I don't think you'll _ever_ get it >:-)

Jim Thompson

unread,
Oct 9, 2012, 10:13:35 AM10/9/12
to
On Mon, 08 Oct 2012 20:35:46 -0700, John Larkin
What you need to worry about is MY health. Suppose I became
terminally ill ?>:-)

Jim Thompson

unread,
Oct 9, 2012, 10:14:30 AM10/9/12
to
On Tue, 9 Oct 2012 06:22:28 -0500, "Rick" <rik...@bellsouth.net>
wrote:
YAY! Too soon. It didn't take :-(

John Larkin

unread,
Oct 9, 2012, 11:40:26 AM10/9/12
to
On Tue, 09 Oct 2012 07:13:35 -0700, Jim Thompson
There are people that I care about. You certainly aren't one of them.

John Larkin

unread,
Oct 9, 2012, 11:44:18 AM10/9/12
to
On Tue, 09 Oct 2012 07:11:14 -0700, Jim Thompson
You said it yourself: I beat the crap out of you. Keep posting stupid
nonsense, and keep insulting my wife, and I'll keep doing it.

>
>Personally I don't think you'll _ever_ get it >:-)
>
> ...Jim Thompson

Quit smirking and demonstrate.

Jim Thompson

unread,
Oct 9, 2012, 3:19:37 PM10/9/12
to
On Tue, 09 Oct 2012 08:44:18 -0700, John Larkin
I bet you have a neon sign outside your building, "The great and
wonderful John Larkin works here" ;-)

And you'll never "get it"... you lack the true engineering thinking
processes to solve it... you're just a Tulane hacker ;-)

Jim Thompson

unread,
Oct 9, 2012, 3:21:49 PM10/9/12
to
On Tue, 09 Oct 2012 08:40:26 -0700, John Larkin
You missed the meaning. I bet some smarter people took note.

If you got run over by a car, I'd campaign to make that day a national
holiday.

Jamie M

unread,
Oct 9, 2012, 5:04:49 PM10/9/12
to
On 10/7/2012 3:59 PM, Jim Thompson wrote:
> Critiques, suggestions welcome...
>
> http://www.analog-innovations.com/SED/CAP_Dropper-type_Supply.pdf
>
> Sand in air ignored.
>
> ...Jim Thompson

I don't know for sure but guess that circuit is for the initial
start up, until the flyback takes over. I have a circuit I made
using a depletion mode fet too that works for this and has been
built.

cheers,
Jamie


Version 4
SHEET 1 7488 1496
WIRE 1840 -1104 -1648 -1104
WIRE -48 -704 -656 -704
WIRE 144 -704 -48 -704
WIRE 352 -704 208 -704
WIRE 736 -704 352 -704
WIRE -48 -688 -48 -704
WIRE 352 -624 352 -704
WIRE -96 -608 -160 -608
WIRE -48 -544 -48 -592
WIRE 352 -496 352 -560
WIRE -48 -400 -48 -464
WIRE 128 -400 -48 -400
WIRE -48 -368 -48 -400
WIRE -896 -320 -1088 -320
WIRE -656 -320 -656 -704
WIRE -656 -320 -816 -320
WIRE 736 -320 736 -704
WIRE 736 -320 624 -320
WIRE 624 -288 624 -320
WIRE -160 -256 -160 -608
WIRE -48 -256 -48 -288
WIRE -48 -256 -160 -256
WIRE -1088 -240 -1088 -320
WIRE -48 -240 -48 -256
WIRE -656 -192 -656 -320
WIRE 624 -176 624 -208
WIRE -48 -112 -48 -176
WIRE 736 -112 736 -320
WIRE -1088 -96 -1088 -160
WIRE 128 -96 128 -400
WIRE 208 -96 128 -96
WIRE 288 -96 208 -96
WIRE -656 -80 -656 -128
WIRE 624 -64 624 -112
WIRE 704 -64 624 -64
WIRE 208 -48 208 -96
WIRE 288 -32 288 -96
WIRE 336 -32 288 -32
WIRE 480 -32 400 -32
WIRE 512 -32 480 -32
WIRE 544 -32 512 -32
WIRE 640 -32 608 -32
WIRE 944 -32 864 -32
WIRE 1168 -32 1008 -32
WIRE 1376 -32 1168 -32
WIRE 704 -16 704 -64
WIRE 736 -16 736 -32
WIRE 736 -16 704 -16
WIRE 1168 0 1168 -32
WIRE -240 16 -320 16
WIRE -160 16 -240 16
WIRE 1376 16 1376 -32
WIRE 512 48 512 32
WIRE 512 48 496 48
WIRE 640 48 512 48
WIRE 960 48 864 48
WIRE -320 64 -320 16
WIRE 208 64 208 16
WIRE 496 80 496 48
WIRE 960 80 960 48
WIRE 128 96 128 -96
WIRE 336 96 128 96
WIRE 1168 112 1168 64
WIRE 128 128 128 96
WIRE 336 144 336 96
WIRE 560 144 336 144
WIRE 656 144 624 144
WIRE 736 144 736 -16
WIRE 1376 144 1376 96
WIRE 368 176 272 176
WIRE -320 192 -320 144
WIRE -176 192 -320 192
WIRE -96 192 -176 192
WIRE 80 192 -96 192
WIRE 464 192 432 192
WIRE 576 192 528 192
WIRE -16 208 -32 208
WIRE -320 224 -320 192
WIRE 368 224 368 176
WIRE 432 224 432 192
WIRE 432 224 368 224
WIRE 576 224 576 192
WIRE 656 224 656 144
WIRE 656 224 576 224
WIRE 688 224 656 224
WIRE 320 240 272 240
WIRE 176 256 -96 256
WIRE 656 256 656 224
WIRE 432 272 432 224
WIRE 464 272 432 272
WIRE 576 272 576 224
WIRE 576 272 544 272
WIRE -176 288 -176 272
WIRE -96 288 -96 256
WIRE -96 288 -176 288
WIRE 176 304 176 256
WIRE 272 304 176 304
WIRE -160 320 -256 320
WIRE -32 320 -32 208
WIRE -32 320 -160 320
WIRE 80 320 80 192
WIRE 208 320 80 320
WIRE -16 336 -32 336
WIRE 656 352 656 320
WIRE 736 352 736 240
WIRE 736 352 656 352
WIRE 208 368 208 320
WIRE 272 368 208 368
WIRE -32 384 -32 336
WIRE -32 384 -80 384
WIRE -256 400 -256 320
WIRE 320 432 320 240
WIRE 480 432 320 432
WIRE 560 432 480 432
WIRE 736 432 736 352
WIRE 736 432 640 432
WIRE -160 448 -160 400
WIRE -160 448 -192 448
WIRE -80 448 -80 384
WIRE -80 448 -160 448
WIRE -160 464 -160 448
WIRE 736 464 736 432
WIRE 480 480 480 432
WIRE -256 512 -256 496
WIRE 320 592 320 432
WIRE 320 592 -256 592
WIRE -320 624 -320 304
WIRE -160 624 -160 528
WIRE -160 624 -320 624
WIRE 128 624 128 416
WIRE 128 624 -160 624
WIRE 480 624 480 544
WIRE 480 624 128 624
WIRE 736 624 736 544
WIRE 736 624 480 624
WIRE 128 672 128 624
WIRE -1648 1392 -1648 -1104
WIRE 1840 1392 1840 -1104
WIRE 1840 1392 -1648 1392
FLAG -656 -80 0
FLAG 496 80 0
FLAG 960 80 0
FLAG -48 -112 0
FLAG -1088 -96 0
FLAG 480 -32 vref
FLAG -240 16 vref
FLAG 208 64 0
FLAG 1168 112 0
FLAG 1376 144 0
FLAG 128 672 0
FLAG 352 -496 0
SYMBOL res -176 304 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -336 48 R0
SYMATTR InstName R2
SYMATTR Value 33k
SYMBOL res -336 208 R0
SYMATTR InstName R3
SYMATTR Value 4.7k
SYMBOL res 656 416 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL cap -176 464 R0
SYMATTR InstName C1
SYMATTR Value 1.8n
SYMBOL cap -112 192 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL res -192 176 R0
SYMATTR InstName R5
SYMATTR Value 150k
SYMBOL res 720 448 R0
SYMATTR InstName R6
SYMATTR Value 0.5
SYMBOL cap 464 480 R0
SYMATTR InstName C3
SYMATTR Value 470p
SYMBOL res 560 256 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 22
SYMBOL cap -672 -192 R0
SYMATTR InstName C4
SYMATTR Value 0.01�
SYMBOL ind2 720 -128 R0
SYMATTR InstName L1
SYMATTR Value 1mH
SYMATTR Type ind
SYMATTR SpiceLine Rser=1.1 Cpar=30p
SYMBOL ind2 624 64 M180
WINDOW 0 36 80 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName L2
SYMATTR Value 28�H
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.4
SYMBOL cap 192 -48 R0
SYMATTR InstName C6
SYMATTR Value 10�
SYMBOL ind2 880 64 R180
WINDOW 0 36 80 Left 0
WINDOW 3 49 40 Left 0
SYMATTR InstName L3
SYMATTR Value 28�H
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.037
SYMBOL diode 944 -16 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D4
SYMATTR Value GSD2004W-V
SYMBOL res -32 -272 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R10
SYMATTR Value 50K
SYMBOL Xzener_DiodesInc -64 -176 M180
SYMATTR InstName U3
SYMATTR SpiceModel SMAZ16
SYMBOL schottky 528 176 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D3
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -800 -336 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R14
SYMATTR Value 1
SYMBOL diode 608 -48 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D2
SYMATTR Value GSD2004W-V
SYMBOL voltage -1088 -256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 170
SYMBOL diode 400 -48 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D5
SYMATTR Value GSD2004W-V
SYMBOL cap 496 -32 R0
SYMATTR InstName C7
SYMATTR Value 0.1�
SYMBOL nmos -96 -688 R0
SYMATTR InstName M1
SYMATTR Value DN2535
SYMBOL res -32 -448 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R8
SYMATTR Value 1K
SYMBOL PowerProducts\\LT1246 128 272 R0
SYMATTR InstName U1
SYMBOL polcap 1152 0 R0
SYMATTR InstName C10
SYMATTR Value 100�
SYMBOL res 1360 0 R0
SYMATTR InstName R9
SYMATTR Value 15
SYMBOL nmos 688 144 R0
SYMATTR InstName M2
SYMATTR Value STP8NM60
SYMBOL schottky 672 320 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 624 128 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D6
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL npn -192 400 M0
SYMATTR InstName Q1
SYMBOL res -272 496 R0
SYMATTR InstName R11
SYMATTR Value 1meg
SYMBOL res 608 -304 R0
SYMATTR InstName R12
SYMATTR Value 100
SYMBOL cap 608 -176 R0
SYMATTR InstName C5
SYMATTR Value 0.047nF
SYMBOL diode 144 -688 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D7
SYMATTR Value GSD2004W-V
SYMBOL cap 336 -624 R0
SYMATTR InstName C8
SYMATTR Value 44�F
TEXT -128 824 Left 0 !.tran 1000m startup
TEXT 768 120 Left 0 !K L1 L2 L3 1
TEXT -1080 888 Left 0 !.options reltol=0.01
TEXT -1080 928 Left 0 !.options trtol=7
TEXT -1088 968 Left 0 !.options Gmin=1e-9 method=Gear
TEXT -1080 792 Left 0 !.include supertex.lib
TEXT -744 -840 Left 0 ;ICE components part#: TX08069 (100kHz flyback
transformer 120VDC-170VDC input and 20VDC output@1200mA plus 20Vaux@50mA)
TEXT -728 -776 Left 0 ;how can we get full 1200mA regulated output load?
(our bias winding is 20V but our output sags at high current draw..)

Jamie M

unread,
Oct 9, 2012, 5:18:36 PM10/9/12
to
I tried to upload a working zip file for the ltspice sim but can't with
my new server, if anyone wants it I can send it via email.

cheers,
Jamie

Jim Mueller

unread,
Oct 10, 2012, 12:05:59 AM10/10/12
to
On Mon, 08 Oct 2012 16:53:28 -0700, Jim Thompson wrote:


>
> You've lost me there.
>
> ...Jim Thompson

No wonder! When I looked at your results the first time I completely
missed the notes below each graph. Everything is there as you say.
Zooming in really helps. Sorry about that.
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