2014-04-19 00:00 <DocScrutinizer05> WTF?!  unionfs-fuse 0.21   June 2008
2014-04-19 00:15 <DocScrutinizer05> ok the binary is 0.26, but still...
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2014-04-19 01:03 <wpwrak> if you're really desperate, you can downgrade to a 0.99pl11/12/14  kernel and add the IFS patch :-)
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2014-04-19 01:47 <DocScrutinizer05> lol
2014-04-19 01:48 <DocScrutinizer05> I'm not exactly in  need of a unionfs, I wanna learn what is the current state of art *when* somebody needs sth like that
2014-04-19 01:48 <DocScrutinizer05> I tried IFS, been a nightmare
2014-04-19 01:49 <DocScrutinizer05> wtf is pl11/12/14 ?
2014-04-19 01:50 <DocScrutinizer05> (tried) yes, back in 0.99 kernel days
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2014-04-19 05:24 <whitequark> http://hackaday.com/2014/04/18/auto-roll-up-tool-storage/
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2014-04-19 06:06 <DocScrutinizer05> looks good, but only looks...
2014-04-19 06:08 <DocScrutinizer05> if you wouldn't try to make it auto-rollup, and not insist in it being vertical, it would actually be usable as a *movable* alternative to toolbox
2014-04-19 06:08 <DocScrutinizer05> this way it's more like a geeky shelf, not meant to get moved anywhere else than where it is
2014-04-19 06:50 <wpwrak> oh, this is gorgeous - homoeopathic pee: https://www.schneier.com/blog/archives/2014/04/overreacting_to_1.html
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2014-04-19 22:04 <wpwrak> DocScrutinizer05: you'll like this one: http://www.youtube.com/watch?v=keaE7QTKTYE
2014-04-19 22:28 <DocScrutinizer05> cooooool!
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2014-04-19 22:29 <DocScrutinizer05> the cute 14V LEDs
2014-04-19 22:30 <DocScrutinizer05> 3 bucks? still worth it, but only for experts ;-P
2014-04-19 22:32 <wpwrak> i guess if you dunk is first in silicone, it'll be a lot safer :)
2014-04-19 22:32 <DocScrutinizer05> definitely not, it will catch fire in no time
2014-04-19 22:34 <wpwrak> well, there are some high-temperature formulations ...
2014-04-19 22:35 <DocScrutinizer05> but you could e.g. mount it on a non-grounded power line (transformer), or a power line with a proper RCD, or simply out of reach of anybody, in 6m height
2014-04-19 22:36 <DocScrutinizer05> or parallel the whole 14V LEDs (with tiny series Rs) and operate the whole thing at 12V
2014-04-19 22:36 <wpwrak> heh :)
2014-04-19 22:37 * DocScrutinizer05 thought those HV-LEDs were 22V or somesuch
2014-04-19 22:38 <DocScrutinizer05> ooooh, wait
2014-04-19 22:38 <DocScrutinizer05> graetz rectifier, buffer C
2014-04-19 22:38 <DocScrutinizer05> ~400/16
2014-04-19 22:38 <DocScrutinizer05> !400/16
2014-04-19 22:40 <DocScrutinizer05> 25 :-)
2014-04-19 22:40 <DocScrutinizer05> 16*22=352
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2014-04-19 22:42 <DocScrutinizer05> btw it's way less dangerous than that guy claims it was - you are on life wire only with a duty cycle of 50%
2014-04-19 22:42 <DocScrutinizer05> ;-P
2014-04-19 22:43 <DocScrutinizer05> then you get at least 20ms to open your grip and get away from that thing that bites you
2014-04-19 22:44 <DocScrutinizer05> then otoh it's intermittant DC, and despite what Edison always tried to make the world believe, DC is way worse than AC
2014-04-19 22:46 <DocScrutinizer05> AC won't create effective electrolysis, and won't operate but paralyze nerves
2014-04-19 22:47 <DocScrutinizer05> DC can break your bones and make your skin look like bubble foil
2014-04-19 22:48 <DocScrutinizer05> one end filled with H2, the other with O2
2014-04-19 22:49 <DocScrutinizer05> AC basically just burns your skin and tissues
2014-04-19 22:50 * DocScrutinizer05 needs to get a few frog legs ;-P
2014-04-19 22:51 <DocScrutinizer05> http://commons.wikimedia.org/wiki/File:Luigi_Galvani_Experiment.jpeg
2014-04-19 23:01 <wpwrak> the great classic :)
2014-04-19 23:02 <wpwrak> a plan B if you can't source a good motor for the vibration alarm
2014-04-19 23:04 <DocScrutinizer05> galaxy S5: IP67 :-o
2014-04-19 23:04 <sb0> this thing reminds me of a cheap transformer-less "1.7kW 220V -> 110V" adapter that fit in the palm of one hand
2014-04-19 23:04 <sb0> it warned against connecting to sensitive equipment like computers, and said it was only good for hairdryers and such
2014-04-19 23:05 <sb0> I wonder how it's supposed to work (or not)
2014-04-19 23:05 <DocScrutinizer05> LOL
2014-04-19 23:05 <DocScrutinizer05> diode
2014-04-19 23:05 <sb0> yeah :)
2014-04-19 23:05 <sb0> so if you put at transformer at the output, you get DC through it?
2014-04-19 23:05 <DocScrutinizer05> hehe
2014-04-19 23:06 <DocScrutinizer05> probably you can choose which direction the fan in the hairdryer spins, by rotating the mains plug 180°
2014-04-19 23:06 <DocScrutinizer05> ;-P
2014-04-19 23:07 <DocScrutinizer05> and yeah, motors and transformers LOVE dc
2014-04-19 23:07 <DocScrutinizer05> it might work for plain braindead heaters
2014-04-19 23:07 <DocScrutinizer05> without motor
2014-04-19 23:08 <DocScrutinizer05> but hey, maybe it been "smart" and "muted" every second full sine wave
2014-04-19 23:09 <DocScrutinizer05> or it simply been a dimmer
2014-04-19 23:10 <sb0> in that case, the full voltage of a complete sine wave will saturate the transformer of any 110V device connected to it and also cause a disaster
2014-04-19 23:10 <DocScrutinizer05> then it actually *could* work with transformers and AC motors too, at least with some of them
2014-04-19 23:10 <DocScrutinizer05> yep, usually it will
2014-04-19 23:10 <DocScrutinizer05> saturated trafo is a nasty thing
2014-04-19 23:10 <sb0> I've actually tried to push the voltage of mains transformers
2014-04-19 23:10 <sb0> they don't like that
2014-04-19 23:11 <DocScrutinizer05> it's usually a sure kill
2014-04-19 23:11 <sb0> they begin seriously saturating at like 20% more of the rated voltage
2014-04-19 23:11 <DocScrutinizer05> yep
2014-04-19 23:12 <sb0> switching power supplies will also fail badly
2014-04-19 23:12 <DocScrutinizer05> dunno what's happening to toroid trafos then
2014-04-19 23:13 <sb0> well, maybe not if it's a dimmer
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2014-04-19 23:14 <DocScrutinizer05> actually no, you *can* operate trafos with phase kickin dimmers, not though with phase cutoff dimmers (the new stuff) which are needed for any electronics like LED lamps
2014-04-19 23:16 <DocScrutinizer05> and for SPSU it's the question which PFC you got in them, but most of those can do 220V anyway, so any such nonsensical "comnverter" not needed
2014-04-19 23:16 <DocScrutinizer05> LED lamps have a SPSU with no PFC at all, and they work finbe with cutoff dimmers
2014-04-19 23:16 <DocScrutinizer05> fine*
2014-04-19 23:16 <DocScrutinizer05> most of them do, at least
2014-04-19 23:17 <DocScrutinizer05> some start flickering
2014-04-19 23:17 <DocScrutinizer05> and some few LED lamps actually have a PFC and can cope with classical kick-in dimming
2014-04-19 23:19 <sb0> what's wrong exactly with transformers and kick-in dimmers?
2014-04-19 23:19 <sb0> I never read a good explanation for that
2014-04-19 23:20 <sb0> kick-in is when you apply the voltage suddenly within a sinusoid arch, right?
2014-04-19 23:20 <sb0> while cut-off is when you apply the start of the arch, then switch off
2014-04-19 23:22 <sb0> I'd actually tend to think that classical (kick-in with triac) dimmers would work, but cut-off won't
2014-04-19 23:23 <DocScrutinizer05> transformers and kick-in dimmer usually works
2014-04-19 23:24 <DocScrutinizer05> cut-off doesn't since it was the same like your age old car engine ignition
2014-04-19 23:25 <DocScrutinizer05> the exact inverse algo applies to PSU with rectifier and buffer C, they don't like it much when you apply 300V out of nothing to a discharged buffer C 100 times a second
2014-04-19 23:26 <DocScrutinizer05> while they usually tolerate sudden reduction of input voltage to 0
2014-04-19 23:26 <DocScrutinizer05> thus cut-off for those
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2014-04-19 23:26 <DocScrutinizer05> kick -in for inductive loads
2014-04-19 23:27 <DocScrutinizer05> and a decent PFC shouldn't mind either of both
2014-04-19 23:31 <roh> yep. basically you just designe for 'worse power' and dim the output voltage proportional to the input
2014-04-19 23:31 <roh> -e
2014-04-19 23:31 <roh> needs a few cent more for better/more parts. thats the 10% a dim-able led lamp costs in the end
2014-04-19 23:32 <DocScrutinizer05> well, a PFC basically emulates a resitive load, by doing buck/boost with no significan input buffer capacitor
2014-04-19 23:33 <DocScrutinizer05> the only capacitive component is the RF-filter capacitor to filter away trhe x MHz switching from the PFC
2014-04-19 23:33 <DocScrutinizer05> on input
2014-04-19 23:33 <DocScrutinizer05> on output side it has a usual huge buffer capacitor for the main SPSU
2014-04-19 23:34 <DocScrutinizer05> so a SPSU with PFC are basicall two SPSU in series
2014-04-19 23:35 <DocScrutinizer05> with hte first one controlled by input voltage resp current, rather than output voltage
2014-04-19 23:35 <DocScrutinizer05> si Vin/Iin is constant
2014-04-19 23:35 <DocScrutinizer05> so*
2014-04-19 23:36 <DocScrutinizer05> whicj happens to be the definition of a resistive load
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2014-04-19 23:39 <DocScrutinizer05> I have a FL energysaver lamp that works with kick-in dimmers. dunno what exactly they do
2014-04-19 23:39 <roh> same thing. just ac on the secondary
2014-04-19 23:40 <roh> or high-voltage dc and some startpulse
2014-04-19 23:41 <DocScrutinizer05> yeah, prolly they simply use the "PFC" style SPSU only, to limit the current that flows through the FL, no matter what#s the voltage across FL
2014-04-19 23:42 <DocScrutinizer05> basically a series inductance as in classical FL circuits, just much smaller inductor and a FET or whatever to PWM the current