#garfield Logs

Oct 01 2013

06:29 tsmeow-afk just figured out how to make blind and buried vias in pcb at home, *without* copper plating at home (but *with* the surface layers being made commercially with plated vias), and is puzzled why it took so long to figure it
06:30 katsmeow-afk this is not the same as how to make multilayer pcb for smd generally
07:58 katsmeow-afk 953 results for
07:58 katsmeow-afk singal
07:58 katsmeow-afk Save search
09:15 rue_house kat, see if you can work out what this listing is for, its amusing...
09:15 rue_house http://www.aliexpress.com/item/24vDin-Rail-Power-Supply-Din-Rail-Power-Supply-12v/1327886161.html
12:50 katsmeow-afk a 12v 2amp 10,000watt supply?
12:50 katsmeow-afk wait, 24v
12:50 katsmeow-afk no, 48v @ 5amp
12:51 katsmeow-afk nope, 12v @ 10 amps
12:51 katsmeow-afk 24v @ 2.5 amps?
12:51 katsmeow-afk i give up
12:53 tsmeow-afk chucked the blade of the mattock into the underside of the big truck's stackside recievers, and sat on the handle to straighten out the blade, no pounding or heating ne
12:53 katsmeow-afk do i want 100's of hdmi panel jacks for hdmi for cheap?
12:54 katsmeow-afk like, 168 of them for $3 ?
12:55 Tom_itx do you need hdmi?
12:55 katsmeow-afk i have no hdmi toys, and no desire to get any, all my svga looks fine to me
12:55 Tom_itx then no
12:56 katsmeow-afk k
12:59 Tom_itx Gates admits CTRL-ALT-DEL was a mistake
12:59 katsmeow-afk he said that yrs ago tho
12:59 Tom_itx but tiggr already knows that
12:59 katsmeow-afk yeas
13:01 tsmeow-afk ponders 8 megabytes of ram being enough if the bytes are 1024 bits
13:01 katsmeow-afk to store a directory listing
13:05 tsmeow-afk figures the same ram system can then store video images for comparisons and pointers to generic words, or lat-long location loo
13:06 tsmeow-afk has some 8Mb x 8 rams to throw at the i
13:11 katsmeow-afk i heard a new word on the tv today, "cloor", meaning "closed door", which is evidence i need a huge dictionary
13:21 katsmeow-afk this does not look right : http://images.nationalgeographic.com/wpf/media-live/photos/000/716/overrides/why-droughts-cause-floods-colorado_71679_600x450.jpg
13:22 katsmeow-afk i'd be moving that car
13:22 katsmeow-afk the one on the left
13:26 katsmeow-afk i need a kwick kat nap
13:28 katsmeow-afk oops, i shold rephrase the question........
13:28 katsmeow-afk do i want 100's of DVI panel jacks for cheap?
13:28 katsmeow-afk i have no DVI toys, and no desire to get any, all my svga looks fine to me
16:44 katsmeow-afk 74FCT16374TPV , currently at 2 cents each (including the s&h)
18:30 rue_house my os drive just went read-only, I have to dump links in here
18:31 Tom_itx what causes that?
18:31 rue_house an error
18:31 rue_house the computer is mostly running fine
18:32 rue_house http://www.aliexpress.com/item/DN-02C-new-pre-insulated-cable-links-butt-connectors-crimping-tool-0-25-2-5mm/1029745525.html
18:32 rue_house http://www.aliexpress.com/item/SV-1-25-4S-U-shaped-fork-Insulated-Terminal-crimp-connection-ends-copper-nose/860127541.html
18:32 katsmeow-afk i'm sorry, that is off topic and violated freenode's terms of service
18:34 rue_house http://i01.i.aliimg.com/img/pb/200/754/490/490754200_392.jpg <-- I so have to make one!
18:34 rue_house http://www.aliexpress.com/item/SV2-4S-brass-blue-fork-Insulated-Terminal-crimp-connection-ends-copper-nose/860007373.html
18:34 Tom_itx where'd rif go?
18:35 rue_house http://www.aliexpress.com/item/Crimp-Terminal-Female-Spade-Connector-insulated-cover-suitable-for-many-rocker-switches-toggle-switches-auto-relays/757379361.html
18:35 rue_house http://www.aliexpress.com/item/30W-24V-Din-Rail-Single-Output-Switching-power-supply/628620720.html
18:35 rue_house http://www.aliexpress.com/item/30W-HDR-30-24V-Din-rail-switching-power-supply/556799808.html
18:35 katsmeow-afk Riff left here last week
18:36 rue_house http://www.ebay.ca/itm/20x-T10-194-921-Bulbs-Socket-Switcher-for-1156-Ba15s-Bau15s-Socket-Kits-/390657949868
18:36 rue_house http://www.ebay.ca/itm/Auto-Instrument-Panel-Cluster-Plug-Lamp-Dash-Light-Bulb-T10-Twist-Socket-10-Pcs-/330933579900
18:36 rue_house http://www.ebay.ca/itm/3-5mm-Wireless-Bluetooth-Receiver-Stereo-Audio-Simple-For-iPod-iPhone-MP3-MP4-PC-/350828587855
18:36 rue_house http://www.ebay.ca/itm/Socket-40P-40Pin-ZIF-ZIP-IC-Test-Tester-Board-Socket-GOOD-QUALITY-/290881930881
18:36 rue_house http://www.ebay.ca/itm/1156-BA15S-1-LED-Backup-Car-Light-Tail-Turn-Singal-Light-White-High-Power-/290958402497
18:36 rue_house http://www.ebay.ca/itm/Grease-Zerk-Caps-TRX-YFZ-BANSHEE-LTR-KFX-RAPTOR-RZR-RD-/170853503547
18:37 rue_house ok, back in a minute
18:45 rue_house zlog
18:47 rue_house ok
18:50 rue_house Bad_Cluster_Table_Count 12
18:50 rue_house Bad_Block_Count 0 216 0
18:50 katsmeow-afk you have had so much trouble from the ssd, why are you using it?
18:51 rue_house yea, this aint good
18:51 rue_house looks like its done
18:51 rue_house its great performance tho
18:51 rue_house I'm kinda mis-using it
18:51 rue_house I should be making regular writes to it
18:51 rue_house shouldn't
18:52 rue_house I'll do a bootable backup tonight
18:52 rue_house now, are those the crimpers I want, and does wonderfull wholesale sell 1/4" spade connectors
18:52 katsmeow-afk can you still get cards (usually used for caching) that you can put 2 or 4 gigs of mobo ram into, and use just as fast?,, they even made them once as drives,, you load stuff from a hdd to them, and then treat them like anotehr drive
18:53 rue_house no, its read speed
18:53 katsmeow-afk mobo ram is tons faster for writing, and reading
18:53 rue_house unless you have 60G of ram and transfer the whole contents of the drive
18:53 katsmeow-afk umm,, pricey, but very very fast and reliable
18:54 rue_house I'm not supposed to be making regular writes to it
18:54 rue_house I didn't tune properly
18:54 rue_house and didn't set up an overlay fs
18:54 tsmeow-afk points out that 200 modules of olde 512meg mobo ram is 102 Gb
18:57 katsmeow-afk in fact, if you byte-aligned on 1024 bytes, and used 256 of the olde modules (prolly get them for next to free), you can grab an entire FAT entry as one wwiiiiidddeeee byte
18:57 katsmeow-afk grab each sector on the drive as one byte
18:57 katsmeow-afk can't get much faster
18:59 katsmeow-afk if you have 20ns access ram, and clock it out as fast as possible, you'd need a clock over 14Ghz
18:59 tsmeow-afk goes outside for a
19:00 rue_house http://www.aliexpress.com/store/product/FDD-2-250-Female-Pre-insulated-terminal-crimp-connection-ends-copper-nose-1000/705405_860383627.html
19:01 rue_house found them!
19:01 rue_house kat, I dont know how to keep that much ram refreshed
19:01 rue_house $42! where is a bag of 100.
19:14 katsmeow-afk it's self refreshing if you "luckily" get the right kind
19:15 katsmeow-afk set a timer on an avr, wait till current activity is done, trigger refresh and send busy back to the puter till done
19:15 katsmeow-afk don't need an avr to do it, but you might wanna add other smarts to it too
21:16 katsmeow-afk klepto nick'd "Grabs" grabbed the Off off the clear table (tabula rasa) running into the Wood's woods
21:23 Lola8088 Hola!
22:02 rue_shop2 hey!
22:02 rue_shop2 kat, I seem to be having a reality problem
22:02 rue_shop2 if I power supply is rated at 5V, 2.5A
22:02 rue_shop2 what should the output voltage be with a 0.5A load
22:04 rue_shop2 katsmeow-afk, ?
22:07 rue_shop2 aaah my alligator ciips are dropping the .8V
22:09 Tom_itx wtf
22:19 rue_shop2 I set the supply to 5.08V, at about .75A, its dropped to 4.95
22:19 rue_shop2 so it might be just a *bit* better than it was
22:19 rue_shop2 the 5V rail is rated to 3.2A
22:19 rue_shop2 I dont know how you get that out of it
22:20 rue_shop2 maybe if it was running off 240V
22:20 rue_shop2 and the regulator failed and was going ape
22:20 rue_shop2 cause at 2A the output is down to 3V
22:20 rue_shop2 er no, I only got as far as 1.5
22:23 rue_house Lola8088, hey
22:41 katsmeow-afk what sorta psu is it??
23:02 katsmeow-afk look at it's input, use the scope, i bet you find tons of ripple, so replace the open diode or the semi-open filter cap
23:02 katsmeow-afk look at it under 2a load
23:04 katsmeow-afk if it's a generic regulator chip, LM317 or 7805 sorta chip, it needs 3v more input than it's output, if you want 5v and the input is 7v, the regulator will fail at 2amps
23:14 rue_house its a psu in an industrial labeler
23:15 rue_house I checked the bulk cap and the rectifier, they are ok
23:15 rue_house I found an almost identicle supply by other manuf, performs almost exactly the same
23:15 rue_house wow, this usb/ide drive adapter is FAST
23:16 katsmeow-afk did you checkit under 2amp load?
23:17 rue_house I did a ESR test, its well in the ok range
23:17 rue_house I have a ac current injector setup for my scope
23:17 katsmeow-afk so the diodes wee not tested under 2amp load
23:17 rue_house hmm, maybe 1A, as they ran a 12V lightbulb either way
23:18 katsmeow-afk k
23:18 rue_house I replace the tl3483, I replace the 431, I replaced the optos, no difference
23:19 rue_house the main fet had no leakage and Ron of about 1R
23:19 rue_house the resistance of all the resistors was ok
23:20 katsmeow-afk err, the fet is 1 ohm, and you lose 2v at 2amps? see a connection there?
23:21 rue_house fet is on the 120V side
23:21 katsmeow-afk o
23:21 katsmeow-afk well, i can only guess, because i can't see it, and i have no clue, but good luck with that
23:21 rue_house guesses are good
23:21 rue_house your confirming my thoughts
23:21 rue_house this I find good
23:22 katsmeow-afk yea,, but i guessed the fet was on the secondary because no one told me what sorta psu it was
23:22 rue_house smps
23:22 rue_house kinda cheap one
23:22 katsmeow-afk did y scope the output under load?
23:22 rue_house there is no ripple in the outputs
23:23 rue_house they just bow out
23:23 katsmeow-afk is there any kind of remote volt sense on them?
23:23 rue_house nono
23:24 rue_house I dont think the feedback has nearly enough gain
23:24 katsmeow-afk are they made for only 240, and you are running them on 120?
23:24 rue_house "100V-240V"
23:24 rue_house so, yea
23:24 rue_house I was gonna try it on 240, decided not to bother
23:24 katsmeow-afk new? used? ebay? aliexpress?
23:25 rue_house broken down labeler at a cerial factory here
23:25 rue_house tonnes of issues
23:25 katsmeow-afk i am beginning to think cracked transformer core, but i can't proove it
23:25 rue_house it peels labels, thats its job, there is NO static handling or bonding
23:26 rue_house they have 4 floating power supplies and everything is optically isolated
23:26 katsmeow-afk you check the secondary diodes too?
23:26 rue_house I been tieing them to ground with ~220R
23:26 rue_house I checked one, the dropout didn't look like a problem
23:27 katsmeow-afk hmmmmmm does that fet have a reverse diode, and is it good?
23:27 rue_house hmmm
23:27 rue_house hard for me to scope the primary, so I didn't look much harder into it
23:28 rue_house I started to suspect what you already said, its a 240V supply that 'just barely works' at 120
23:28 katsmeow-afk the diodes, imho, isn't supposed to be used, but some use it as a clamp to force thetransformer to make more power
23:28 rue_house they do have a few clamps around it
23:28 katsmeow-afk i mean internal to the fet
23:28 rue_house ok, I backed up my os drive
23:29 rue_house I only cheked the fet leakage and Ron
23:29 rue_house the 3843 uses a 22R to the gate
23:29 rue_house its ok
23:29 tsmeow-afk decides to write an OS called 02 for people i
23:30 rue_house any good progress on things at your end today kat?
23:30 katsmeow-afk i dunno then, i guess see if it works on 240
23:30 katsmeow-afk i moved dirt
23:31 katsmeow-afk tried to figure a way to mount solar cells on the roof in such a way they can chase the sun tween the shadows
23:31 rue_house I have a pile of sand I have to move before it washes away
23:31 katsmeow-afk stared down a doberman which was growling and barking at me at my mailbox
23:31 rue_house yike
23:34 rue_house funny enought eh os only has 17G os data on it
23:34 rue_house I suppose I could backup to a 32G flash card
23:38 tsmeow-afk remembers buying 64k of really slloooow ram for $100 on
23:39 katsmeow-afk you'd haveto buy 1,000,000 C64 puters, networking them, to have 32gig of free ram
23:40 rue_house TAHTS GONNA have some power draw
23:41 katsmeow-afk on the other paw, a million 1Mhz puter would be a million-core 1,000 Ghz puter
23:42 katsmeow-afk 1,000,000 puters @ 1,000,000 = 1 Thz
23:43 katsmeow-afk i guess it still sucks to be IBM compared to the C64 ;-)
23:44 katsmeow-afk or Intel