<To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote:
>On Mon, 08 Oct 2012 09:06:13 -0700, John Larkin
><jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

>>On Mon, 08 Oct 2012 08:24:23 -0700, Jim Thompson
>><To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote:

>>>On Mon, 08 Oct 2012 08:12:21 -0700, John Larkin
>>><jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

>>>>On Mon, 08 Oct 2012 07:42:02 -0700, Jim Thompson
>>>><To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote:

>>>>>On Sun, 07 Oct 2012 21:01:44 -0700, John Larkin
>>>>><jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

>>>>>>On Sun, 07 Oct 2012 20:45:01 -0700, Jim Thompson
>>>>>><To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote:

>>>>>>>On Sun, 07 Oct 2012 19:26:05 -0700, John Larkin
>>>>>>><jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

>>>>>>>>On Sun, 07 Oct 2012 18:21:58 -0700, Jim Thompson
>>>>>>>><To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote:

>>>>>>>>>On 08 Oct 2012 01:09:30 GMT, Jim Mueller <wrongn...@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 =======================

>>>>>>>                                        ...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.

>>>>>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

>>>>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.

>>>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.

>>>                                        ...Jim Thompson

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

>OK.  My apologies.  How about we limit ourselves to strictly
>electronics from now on?

>                                        ...Jim Thompson