10:13 <DocScrutinizer05> whitequark: http://www.thepeterboroughexaminer.com/2015/04/28/forest-fire-threatens-ukraines-chernobyl-nuclear-zone

10:24 <eintopf> chernobyl :/

10:29 <DocScrutinizer05> revival

10:32 <DocScrutinizer05> fires could re-suspend radiating material. Nobody knows exactly how much would get suspended into atmosphere when contaminated areas burn down

10:35 <DocScrutinizer05> http://netc.com/ is vastly useless

10:35 <viric> I didn't think about resuspending.

10:43 <whitequark> yeah, that's not nice for sure

10:44 <viric> I have a chemical engineer from Kiev as neighbour; he moved out the country immediately after the melt.

10:45 <viric> I don't know how well goes the reconstruction of the 2nd covering wall

10:45 <viric> it was scheduled for ~2013 or so, isn't it?

10:46 <viric> the last I heard was that there was a shortage of money for that

10:47 <viric> ukraine also used that to preassure foreigners for providing a money supply

10:47 <viric> EU specially

10:49 <viric> it's like a man with bombs around the body, asking for money in front of you.

10:49 <whitequark> smart

10:51 <viric> it happened that most of incomming money was used for the world cup, back then

10:51 <viric> well, not necessarily "incoming".

11:12 <s904s> hi there is somebody? I wish to ask you something about an hardware issue that I'have

11:17 <DocScrutinizer05> viric: 2017

12:51 <viric> DocScrutinizer05: 2017 was the original plan?

12:52 <DocScrutinizer05> nope, I've read in one article today that some responsible international dude explained that due to last year's delays the date shifted from 2016 to 2017 - iirc

13:00 <DocScrutinizer05> >>The project had been scheduled for completion by the end of this year but the EBRD said last year technical problems would delay it until late 2017.<< http://news.yahoo.com/forest-fire-near-ukraine-chernobyl-nuclear-officials-171649579.html

13:05 <wpwrak> viric: (bomb belt and money) at least it wasn't spent on adding more bombs :)

13:23 <eintopf> I don't understand the current situation in chernobyl. When the supergau(don't know if this is also the english word) occurs then it was UDSSR. Now who take care about chernobyl russia or ukraine?

13:23 <eintopf> maybe nobody

13:27 <viric> there is a common funding between EU, Russia, Ukranie, ...

13:28 <viric> but Ukranie is the main executor of tasks.

13:28 <viric> for what I understood

13:28 <eintopf> ah, ok.

13:28 <eintopf> but they have bigger problems now

13:28 <viric> The russian tsar

16:39 <whitequark> DocScrutinizer05: remember the ATX 3.3V regulator madness?

16:39 <whitequark> we figured out how it works

16:39 <whitequark> two words: "magnetic amplifier"

16:39 <whitequark> http://www.smpspowersupply.com/atx-power-supply.html

16:39 <whitequark> +3.3V rail is set by a so-called magnetic amplifier (magamp) comprised of saturable inductor L8, bipolar transistor Q15, diode D14, and control circuitry. Initial inductance of L8 is much higher than L9, so at the beginning of each switching cycle L8 prevents current from flowing through D28. Then L8 rapidly saturates and D28 begin conducting. The blocking time depends on the reset

16:39 <whitequark> currnt through Qh15 and D14, which in turn is set by shunt regulator M9.

16:40 <whitequark> bizarre shit

16:47 <DocScrutinizer05> waitwaitwait, this is a completely different schematics

16:49 <whitequark> yes, it's a bit different

16:49 <whitequark> but same principle

16:49 <whitequark> original one is at http://www.pavouk.org/hw/atxps.png if you lost the link

16:49 <DocScrutinizer05> ta

16:49 <whitequark> it seems to do the saturating inductor trick only on one half-wave though

16:49 <whitequark> which is weird

16:49 <DocScrutinizer05> yes

16:50 <DocScrutinizer05> I said that back when

16:50 <whitequark> oh

16:50 <whitequark> I didn't get it then

16:50 <DocScrutinizer05> it's weird since the drover is symmetrical

16:50 <DocScrutinizer05> driver*

16:52 <whitequark> yes

16:52 <DocScrutinizer05> weird "transductor" thing is the right one of the upper 3 coils of T2 in http://www.pavouk.org/hw/atxps.png

16:57 <whitequark> yeah

16:58 <whitequark> it uses positive feedback through T2 to avoid having to drive Q1/Q2 with large base current

16:58 <whitequark> TL494 opens Q1/Q2 a bit through T2, which start to conduct and thus raise the primary current, which opens them even more

16:58 <whitequark> and at some point TL494 decides to stop the cycle based on feedback and shorts T2