#garfield Logs
Nov 05 2015
#garfield Calendar
00:00 ^kat^-afk i have seen them used reversed, they do work
00:01 ^kat^-afk but i was looking for what tehe *max* reversed voltage could be
00:01 ^kat^-afk seems to be 6v :-/
00:01 ^kat^-afk 3
00:01 ^kat^-afk down vote
00:01 ^kat^-afk
00:01 ^kat^-afk What clabacchio missed in his answer is that the inverse mode of the BJTs can be useful in some schematics.
00:01 ^kat^-afk In this mode BJTs have very low saturation voltage. Several mV is a common value.
00:01 ^kat^-afk This behavior has been used in the past for building analog switches, charge pumps and similar, where the saturation voltage determines the accuracy of the device.
00:02 ^kat^-afk -
00:02 ^kat^-afk most transistors are specified with Vbe reverse breakdown of only a few volts. So for an NPN, if you lower the base below the emitter by 5 or 6 volts, you can damage the part. Just checked a few transistors for Vbe reverse breakdown abs max: 2N3904, 2N4401, -> 6V. BC548, 2N5087, 2N4403, bc807 -> 5V. But some RF transistors are lower: MMBT918 is 3V max, MPS5179 is 2.5V max.
00:02 ^kat^-afk -
00:02 ^kat^-afk so no new parts with rev breakdown in 100's of volts
00:03 ^kat^-afk A BJT used in reverse (collector and emitter swapped) will work as a BJT, but usually with reduced gain. The gain is still usually above 1, but lower than when the transistor is used as intended.
00:09 ^kat^-afk oh well, so nothing new in that spec
00:14 rue_house intersting videi
00:14 ^kat^-afk ?
00:14 rue_house https://www.youtube.com/watch?v=NyBvbot3emM
00:14 rue_house its long tho
00:14 zhanx back
00:14 rue_house but I thin kits good
00:14 ^kat^-afk about?
00:15 rue_house life, the meaning of life, and existance
00:15 ^kat^-afk i think the popular pupose is to grab as much as possible, make otehrs suffer
00:16 ^kat^-afk it's a speech on religion??
00:17 ^kat^-afk it's only audio
00:17 ^kat^-afk ?
00:18 rue_house only audio works, there is no usefull video
00:18 zhanx ok
00:18 ^kat^-afk oh
00:18 zhanx so i failed to find this. minus littlebits
00:18 ^kat^-afk well, 20 min to dl it
00:18 zhanx looking at magnets and how to solder on them for snap together electronics
00:18 ^kat^-afk zhanx ?
00:18 ^kat^-afk oh, you can't
00:19 zhanx tabs then>
00:19 ^kat^-afk make conductive glue
00:19 zhanx k
00:19 zhanx hence why my search failed
00:19 ^kat^-afk altho the magnets themselves prolly won't conduct
00:19 zhanx oh
00:19 ^kat^-afk did you ohm one?
00:19 zhanx i was thinking i2c or spi not yet kat
00:20 ^kat^-afk put some .007 pcb over themagnet, glue it all together, solder your pwr and signal to the pcb copper
00:21 zhanx idea probably out the window, but tiny85's ors 45's preprogrammed to say i am x and do y and the uC finds and does it (thought it was a coding exercise not a hardware issue)
00:21 zhanx teaching kid hardware and minor programming was the idea
00:22 ^kat^-afk http://www.ebay.com/itm/77-pcs-4-1-2-x-8-FR-4-007-1-oz-Double-Sided-Copper-Circuit-Board-PCB-/311245641023 <<== he sells of teh lots and sizes and shapes, or contact him and he willmake a lot to your specifications
00:22 zhanx he learned switches and caps and resistors this week (at 7)
00:22 zhanx k
00:22 ^kat^-afk and he will ship same day
00:23 zhanx only need 1" squares for most of it
00:23 ^kat^-afk i mean you order Monday morning, you may have it in hand Wednesday
00:23 zhanx not here, maybe monday the following week
00:23 ^kat^-afk i dunno if he will chop that small, he sells scrap left froma bulk operation
00:24 zhanx emailing for small scrap
00:24 ^kat^-afk but i am sure he will sell you a single pice you can cut the 1x1's from
00:24 zhanx true
00:24 zhanx i gots a table saw now
00:24 rue_house http://www.aliexpress.com/item/5pcs-One-Side-Copper-Clad-Single-PCB-clad-laminate-Board-material-120x180x1-5mm/32380078815.html
00:24 ^kat^-afk yyyeeeaaaaa, that might make a serious mess of a .007 fr4
00:25 ^kat^-afk i'd cut the .007 with sissors
00:25 zhanx trim blade
00:25 zhanx 104 tpi
00:25 ^kat^-afk ok, sissors are easier
00:25 ^kat^-afk it's paper thin, really
00:25 zhanx true
00:25 rue_house http://www.aliexpress.com/item/10cmx15cm-Single-Side-PCB-Copper-Clad-Laminate-Board-FR4/32359203041.html
00:26 zhanx ok. header will be right angle i guess
00:26 ^kat^-afk he might have thinner, i think he had some .005 once
00:26 rue_house http://www.aliexpress.com/item/10pcs-lot-FR4-PCB-Single-Side-Copper-Clad-DIY-PCB-Kit-Laminate-Circuit-Board-70x100x1-5mm/32255361688.html
00:26 zhanx since i make all kinds of stuff my 7 year old think i am a hacker after today's class
00:26 ^kat^-afk you can gluse the pcb to the magnet, it's so thin the magnet won't know it's there when it grabs the next magnet
00:27 zhanx getting that one rue
00:27 rue_house http://www.aliexpress.com/item/Single-10-20cm-Copper-Clad-Universal-Plate-Test-Plate-PCB-Board-Bakelite-Board-1-4mm-Thick/32227461588.html
00:27 ^kat^-afk but rue, shipping from China is weeks, if he wants to make it this week, china is out of the question
00:27 zhanx i got time
00:28 rue_house if you work out how much $/day it is to wait..
00:28 zhanx i am savaging parts from printers for this
00:28 rue_house zhanx, did you see the last clock pics?
00:28 rue_house does salt change blood pressure?
00:28 zhanx which with my soldering skills takes time and yes rue i did
00:28 ^kat^-afk drastically
00:28 zhanx rue it does
00:29 rue_house more = lower?
00:29 zhanx like big time
00:29 zhanx more is higher
00:29 ^kat^-afk more = higher
00:29 zhanx +1 kat
00:29 rue_house ok, vinigar = lower?
00:29 zhanx no
00:29 zhanx water
00:29 rue_house hmm
00:29 ^kat^-afk uuuhhh,, salted vinegar?
00:29 zhanx lol
00:29 zhanx how do i explain this so you can understand
00:30 zhanx you need salt to a degree
00:30 rue_house its fine, close enough
00:30 rue_house http://sunshine.craigslist.ca/boa/5256016997.html
00:30 zhanx by excess salt is a bad thing. think about salt water membrane transfer to a lower salt content
00:30 rue_house cant stop wondering if I should get that
00:31 zhanx fyi i might have a job
00:31 ^kat^-afk another job!?
00:31 rue_house if I were a spontanious person I'd already have it
00:31 zhanx first one in 11 months
00:31 zhanx the other one still no contact
00:31 ^kat^-afk you were doing hvac and roofing
00:31 zhanx till i ran out of meds
00:32 ^kat^-afk he does have some .005 : http://www.ebay.com/sch/m.html?_odkw=.006&_ssn=abcfab&_osacat=0&_from=R40&_trksid=p2046732.m570.l1313.TR0.TRC0.H0.X.005.TRS0&_nkw=.005&_sacat=0
00:32 rue_house zhanx, you know theBear?
00:32 zhanx kind rue
00:32 zhanx kind of
00:32 ^kat^-afk aussy in robotics
00:32 rue_house I think he's got that same thing
00:33 anx looks at kat. i just ordered the other
00:33 ^kat^-afk becaise he becomes combat ready when a car backfires?
00:33 ^kat^-afk it's only .002 ,, wait, you order $50 of that .007 ?
00:33 zhanx when i realized i was out of meds and called today. wow they were fast to give me new ones
00:34 zhanx i should have orderd this http://www.ebay.com/itm/24-pcs-6-x-8-FR-4-005-1-oz-Double-Sided-Copper-Clad-Circuit-Board-PCB-/161872056248?hash=item25b0538fb8:g:noMAAOxyhXRTOyaG
00:34 zhanx oh well
00:34 ^kat^-afk tellme you didn't order $50 of pcb
00:34 zhanx no i got the china express
00:34 ^kat^-afk oh
00:35 zhanx same price but for less and a longer wait
00:35 at^-afk bangs her head on the desk and quits ever looking stuf
00:35 zhanx tis ok
00:35 zhanx happens all the time to me
00:35 zhanx bookmarked for future orders thats for sure
00:36 ^kat^-afk my head hurts
00:36 rue_house hu?
00:36 zhanx same here. argued with the wife half the night
00:36 rue_house its good to rack up a few options before buying
00:37 ^kat^-afk still downloading that file, rue
00:37 zhanx my pstd is stressing her out, but i am going out of the way not affect her
00:37 zhanx thats stressing her out
00:37 zhanx kat your female help?
00:37 ^kat^-afk don't lock her out, she is yur partner
00:38 zhanx i taught my step son how to ride a bike this week
00:38 zhanx she was mad cause i did it without her (he rode it twice and fell etc)
00:38 ^kat^-afk great way to power his Raspi puter
00:38 rue_house zhanx, if you could wipe a time range of your memories, would you?
00:38 zhanx 00-15
00:38 zhanx all of it
00:38 rue_house hmm
00:39 zhanx yes even learning under you two
00:39 ^kat^-afk i suggest Buspar , take it before or during ptsd
00:39 zhanx too explain
00:39 ^kat^-afk do NOT take it duing times you want to remember later
00:39 rue_house I'd help if I knew enough about how the brain works
00:40 zhanx tis ok
00:40 rue_house something is causing me to break out in something like a rash today
00:40 rue_house dont get it
00:40 zhanx i called today to see anthor therapist
00:40 rue_house I'm not allergic to much of anything
00:40 ^kat^-afk it wears down active links, if you have taken it during while ptsd, it will wear out the memory links active and causing the ptsd
00:41 zhanx kat thank you
00:41 zhanx i will ask for it
00:41 rue_house oh I forgot about those memory studdies
00:41 zhanx but what about people like me
00:41 ^kat^-afk it's not instant, it is cumulative, you prolly won't need it for more than 6 mo
00:42 ^kat^-afk ptsd is an avalanch of meory and programmed reactions, the buspar will wear those links out, will disconnect them
00:42 zhanx i have pstd due to my awesome memory and always wants to flash back bad times since i cant forget 99% of the time
00:42 zhanx k
00:42 ^kat^-afk you may still remember if you try to, but the reaction links will still be worn out
00:43 zhanx will ask my therapist for it
00:43 ^kat^-afk use the smallest does needed, and for as short a time as possible
00:43 ^kat^-afk don't take it on a 24-7 basis unless you have severe ptsd 24-7
00:43 zhanx i got shit i never ever want to remember. does it affect dreams also
00:43 ^kat^-afk i dunno if it affests dreams
00:43 zhanx i am not 24-7 more like 14-7
00:44 ^kat^-afk i took it so i could stop vomiting/diarhea when going out among the humans here
00:45 zhanx i have the highest class of pstd disability due to it. which today i said its not working and due to it i am not able to work asked for more
00:45 zhanx then found out about the rest of the issue the va said oh well to
00:45 ^kat^-afk ok, take as doc prescribes for severe mental stress reaction
00:45 ^kat^-afk don't do any electronics while taking it, if you can
00:45 ^kat^-afk ditto shop work
00:46 zhanx Saturday i was not a functioning human being
00:46 zhanx either way i am tired of try this med see if it works
00:46 ^kat^-afk Buspar works bu breaking ACTIVE memory links, so if you are taking a lot of Buspar and try electronics, it will try to break those memories too
00:47 zhanx k
00:47 zhanx so dont learn when taking it
00:47 ^kat^-afk if you know an upcoming trigger, take it
00:47 ^kat^-afk right
00:47 zhanx that is the issue, still learning my triggers
00:48 zhanx found out also today they are blasting a mine 20 miles away
00:48 ^kat^-afk fun
00:48 zhanx thought i heard it, but yea i was/am paranoid due to it
00:49 ^kat^-afk the mil use a lake within earshot of the Fla place for bombing practice,, was just like the assholes shotting in the cow pastre in the valley here
00:49 zhanx thinking its the shock waves
00:49 at^-afk
00:50 zhanx either way my boys are growing up and i need this fixed
00:50 at^-afk nods a
00:51 zhanx one is like me for electronics the other climbed the railing on the porch and jumped off ( one is 7 and the other is 20 months)
00:51 rue_bed I think trains existed before they were pulled by steam engines
00:51 rue_bed rail road
00:51 zhanx romans
00:51 rue_bed the width of a carrige
00:51 rue_bed yea
00:51 ^kat^-afk they were: pulled by horse and mule
00:51 rue_bed rail - road
00:51 rue_bed yea
00:52 ^kat^-afk and electricity
00:52 zhanx odd question
00:52 rue_bed have to wonder what the first ones looked like
00:52 zhanx i got a bunch of popsicle sticks with round edges
00:52 rue_bed prolly wood rails
00:52 zhanx quickest way to make them square?
00:53 ^kat^-afk belt sander
00:53 rue_bed disc sander
00:53 ^kat^-afk lol
00:53 zhanx ok then
00:53 zhanx will make one
00:53 rue_bed :)
00:53 zhanx :)
00:53 zhanx we can do it
00:53 ^kat^-afk might be $40 on sale
00:53 e_bed challanges z to a disk sander mak
00:53 rue_bed I have my motor
00:53 zhanx i got 5 bike and a motor
00:53 rue_bed and some angle iron and a welder
00:54 zhanx no welder
00:54 zhanx but skills
00:54 rue_bed meh, welders just make things permanently wrong
00:54 rue_bed unless via kat
00:54 rue_bed hows the boat kat?
00:54 zhanx kat can weld thats for sure
00:54 rue_bed one handed behind her back
00:54 ^kat^-afk finished the barrel clamps today, set up to make the connctors to the pod plates tomorrow
00:54 zhanx rue i show you my table saw guides?
00:55 rue_bed no, do show
00:55 rue_bed arg, I think I flea just bit my balls
00:55 rue_bed brb
00:55 zhanx you have those?
00:56 ^kat^-afk holycows costs of sanderw went up
00:56 ^kat^-afk http://www.harborfreight.com/4-inch-x-36-inch-belt-6-inch-disc-sander-97181.html
00:56 rue_bed arg
00:56 ^kat^-afk http://www.harborfreight.com/1-in-x-5-in-combination-belt-and-disc-sander-69033.html
00:56 rue_bed ok
00:57 zhanx tablet is booting
00:57 rue_bed I'm making a 8.5" with a 1hp motor
00:57 ^kat^-afk those sale prices are like $20 to $50 more than i expected
00:58 ^kat^-afk 12v winch costs have doubled since i last bought any
00:58 ^kat^-afk otherwise i'd say they'd make good torquy robot wheel turners
00:59 rue_bed I think the burger and fries I had today is making my skin bubble
00:59 rue_bed arg
00:59 ^kat^-afk send 4 of them under a car to pick it up and turn it around while the owner is in the store
00:59 zhanx imgur.com/t3H2Edb
00:59 zhanx trued within .005
01:00 rue_bed http://imgur.com/t3H2Edb
01:00 ^kat^-afk blade wobble will be more than .005
01:00 zhanx yes
01:00 zhanx but at if you fix the tool it will work
01:00 rue_bed that bears a striking resembelence to my table saw
01:00 rue_bed ~1960?
01:01 ^kat^-afk oooo, pipe clamps make good fences, fasten wood over the pipe where appropriate
01:01 zhanx red oak? 1952 sears and roebuck?
01:01 rue_bed I forgot the make
01:01 zhanx free?
01:01 rue_bed mine has the entension wings on it tho
01:01 ^kat^-afk i have one also, unused, dogs stopped me from making the dirty shop
01:01 zhanx mine was free
01:01 ^kat^-afk scrap yard
01:01 rue_bed and the fence and square
01:02 rue_bed I put a 2HP motor on it
01:02 rue_bed its only like a 8" blade
01:02 zhanx mine is a huge 9hp
01:02 ^kat^-afk yeow
01:02 zhanx dims the lights when i turn it on
01:02 rue_bed mine was a pump motor
01:02 rue_bed oh I'm gonna go see
01:03 zhanx i need a cap for it
01:03 zhanx 1uF or maybe 2
01:03 zhanx also no off /on switch it just plugs in
01:03 ^kat^-afk http://imgur.com/gallery/8HMVXjh isn't 100% accurate
01:05 rue_bed henry craftmaster powertools
01:06 ^kat^-afk foldup aircraft : http://imgur.com/gallery/Rp7L4me
01:07 zhanx not cool, i had 16 pain pills left last time i took one now i have 3
01:07 zhanx wife is taking them
01:08 ^kat^-afk anyone got lots of mney suddenly?
01:08 ^kat^-afk uh oh
01:08 zhanx i got 90 every 30 days
01:09 zhanx aka i can supply some meds, but wow
01:09 zhanx that is the va answer to issues, pain meds
01:09 zhanx and good ones
01:09 ^kat^-afk you haveto put an end to that, if anyone finds out they will cut you off
01:10 zhanx yep
01:10 zhanx she is sleeping and yet another arguement
01:11 zhanx i got till the 1st to get more and i got 3 awesome sauce
01:11 ^kat^-afk wait till tomorrow, for now, hide/lock the pills
01:11 zhanx pills are in the toilet now
01:11 zhanx bottles float
01:11 zhanx the back to be clear
01:11 ^kat^-afk heh. ok
01:12 zhanx that might be the issue we are having
01:13 zhanx its been a little bit since i today one but i write the number on the outside in binary
01:13 zhanx yea i know stupid but works
01:13 ^kat^-afk too long, use hex
01:14 zhanx i hate hex
01:14 zhanx and besides rue said i cant decode hex here
01:15 rue_bed ... what?
01:15 ^kat^-afk oh
01:15 zhanx you said that in feb 13 with the linux thing going around
01:15 rue_bed I was playing on imugr and I come back and what!?
01:15 rue_bed uh
01:15 zhanx the rm -f / in hex
01:16 rue_bed ...
01:16 rue_bed zlog
01:16 rue_bed http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23garfield/2015-02-13.html
01:16 zhanx which i was like its not sudo mv *.* /
01:17 rue_bed what?
01:17 zhanx 2013
01:17 rue_bed feb 13 is 02 12
01:17 rue_bed http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23garfield/2013-02-13.html
01:18 rue_bed ?
01:18 zhanx thinking to the day
01:18 zhanx ok
01:19 zhanx day unsure, but it was a irc logs you posted and said if i decode and paste it in a channel i will get kicked for
01:19 rue_bed well, anyhow
01:19 rue_bed what, I wouldn't say that
01:19 rue_bed would I?
01:19 zhanx no it was not this channel
01:20 zhanx kat decoded it also i was late to the party
01:20 rue_bed I'm falling asleep
01:20 zhanx sorry i am walking back in the brain for it
01:20 rue_bed tommorow is going to be a long frustrating day
01:21 rue_bed I need to work out how to read out all the nurons in my brain
01:21 zhanx still in school?
01:21 rue_bed nope
01:21 rue_bed long done
01:21 zhanx k
01:21 zhanx i am thinking of starting
01:22 ^kat^-afk i did?
01:22 zhanx learning what i know and getting a piece of paper for it
01:22 zhanx kat you did
01:22 ^kat^-afk ok
01:27 ^kat^-afk "you bought him 2 ..... " "you said to!" "NO i said to buy him A HORSE!"
01:27 ^kat^-afk <delete><del.. oops
01:28 zhanx lol
01:33 ^kat^-afk you know they are still making the F16 fighter?
01:33 ^kat^-afk they are backporting the radar from the F22 into them now
01:34 zhanx did you know there was a shooter in san deigo today
01:34 ^kat^-afk off the airport approach, yeas
01:37 zhanx ok kat help me with tomorrows kid learning analog project
01:37 zhanx yea i am lagging kat
01:38 ^kat^-afk my internets if badly clogged
01:38 ^kat^-afk what level ?
01:38 ^kat^-afk it's 1am atm
01:38 zhanx its all basic, this does this we did switches, caps, resistors, this week
01:38 zhanx 2 am
01:38 zhanx 7 years old first week of it
01:39 zhanx thinking diodes
01:39 ^kat^-afk diodes aren't analog
01:39 ^kat^-afk i was thinking a transistor
01:39 zhanx k
01:40 zhanx more? :P
01:40 ^kat^-afk i dunno, you'd need lotta dvms
01:40 at^-afk th
01:40 ^kat^-afk got a scope?
01:40 zhanx i can desolder a few transistors and no scope
01:40 zhanx npn's
01:41 zhanx breadboarding everything with him
01:41 ^kat^-afk ok, what for dc power?
01:42 zhanx up to 12vdc
01:42 zhanx how is this
01:42 zhanx dual switch to led
01:42 zhanx with a transistor that powers a motor?
01:43 zhanx basic circuit still
01:43 ^kat^-afk too much going on
01:43 zhanx k
01:43 ^kat^-afk pot, drives base, two circuits:
01:43 zhanx transistor to motor with a switch for now then
01:43 zhanx pots are not done yet
01:43 ^kat^-afk 1) collector to +12, vary base to pull emitter up and down
01:43 ^kat^-afk 2) emitter grounded, lite between +12 and collector
01:44 ^kat^-afk one circ amplifies current, one amplifies voltage
01:44 zhanx k
01:44 zhanx fast and slow
01:44 ^kat^-afk it's analog because it can be set at anything between +12 and gnd
01:45 ^kat^-afk shows a transistor working
01:45 ^kat^-afk shows a pot working
01:46 zhanx one at a time ( fyi kid is special needs 90% functioning autistic)
01:46 ^kat^-afk analog without diodes,, 1156 bulb, 10ohm 10w resistors and apile of switched and one dvm, brightnedd depends on the number of switches closed (each switch has a 10 ohm 10w resistor)
01:47 zhanx kat he is 7 not 17
01:47 ^kat^-afk my brains shut off an hr ago
01:47 ^kat^-afk it's still a stepped analog
01:47 zhanx but true
01:47 ^kat^-afk i understood that much at age 7
01:48 zhanx ok alarm when off bed time and yes i will think about that
01:48 ^kat^-afk i didn't know the math, or why use th emath, but i knew loads and what a switch does
01:48 ^kat^-afk i knew 1.5v, 12v, 120v, 9v
01:49 ^kat^-afk he hasto be introduced to it to know it
01:49 zhanx true
01:49 ^kat^-afk to know it exists, to know what to ask about, what to read about
01:49 zhanx good idea, adds to what i taught him already really
01:49 zhanx i taught him 6v and now teach currents
01:49 ^kat^-afk i knew how lite bulbs worked, and what made them fail
01:50 ^kat^-afk i had a clue about interna battery resistance
01:50 zhanx now i need to desolder more stuff, thanks kat
01:50 ^kat^-afk so 7 yrs is a good age to clue him in
01:50 ^kat^-afk <curtsey>
01:50 zhanx and tear apart another printer to find the parts
01:51 zhanx night
01:51 ^kat^-afk gnites
01:51 at^-afk has miners running so will leave the puter on to
07:18 zhanx- Fun
14:13 ^kat^-afk Russia Suspends Boeing 737 Certification ; The move comes amid speculation about the cause of Saturday's fatal Russian airliner crash in Egypt. That crash was of an Airbus 321, a plane similar to the 737 in range and passenger capacity.
15:10 Tom_itx figures
15:31 rue_house int he meantime I'm sure the russians are making planes from toasters that certify just fine for flying over russian space
23:13 rue_shop3 hey :)
23:14 ^kat^ i wus just ging to sleep
23:15 ^kat^ where have you been doing what?
23:15 zhanx evening
23:51 ^kat^ gnites