Author Topic: My Scratch Pad  (Read 98662 times)

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Offline MadScientist267

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Re: My Scratch Pad
« Reply #315 on: March 08, 2016, 02:36:50 pm »
Tried to capture physics as well...
5205-0


How it actually manifests:
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560 are directly across inputs at the ADC
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Offline MadScientist267

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Re: My Scratch Pad
« Reply #316 on: March 14, 2016, 09:12:20 pm »
5238-0

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Offline MadScientist267

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Re: My Scratch Pad
« Reply #317 on: March 18, 2016, 06:42:31 am »
Overkill? Me? Pffft...

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;D
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Offline MadScientist267

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Re: My Scratch Pad
« Reply #318 on: April 15, 2016, 02:52:12 pm »
5525-0

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Offline bj

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Re: My Scratch Pad
« Reply #319 on: April 15, 2016, 04:58:09 pm »
  The unavoidable laundry day.  ;)
"Even a blind squirrel will find an acorn once in a while"
bj

Offline MadScientist267

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Re: My Scratch Pad
« Reply #320 on: April 15, 2016, 06:02:02 pm »
Oh yeah, you know it... and I found out how to throw a near endless stream of cash at one of those things while I was at it... little "freebie" detergent coupled with some subtle but significant technology changes in the chemistry department... the camera really doesn't do a great job of capturing it, but those pics were an effort at a few thousand words, to show that no amount of water was going to get rid of the soap. I bailed after a total of 3 complete cycles, the last 2 being nothing more than rinse efforts. Pictures of the ensuing rashes *may* follow :-\
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Re: My Scratch Pad
« Reply #321 on: May 12, 2016, 06:50:26 pm »
5635-0

Sign on an HVAC guard fence on the side of the building next to the laundromat says "Security Notice: This property is protected by electronic surveillance"... I'm guessing it doesn't work very well...
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Offline bj

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Re: My Scratch Pad
« Reply #322 on: May 13, 2016, 06:31:04 am »
  There was a time, around here, where the sign was the only thing installed.  Cheaper.
  Seems like now it's spend the money on the equipment, and forget the sign.
  Not sure either has any effect.    (little mini-rant)
  All is well with you?
"Even a blind squirrel will find an acorn once in a while"
bj

Offline MadScientist267

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Re: My Scratch Pad
« Reply #323 on: May 16, 2016, 12:58:22 am »
LOL

Yeah just been dealing with a handful of things... I'm pretty sure I've got a weak 6V block (#4 in the plots), but it's one of those things where B+ (vendor, not trying to give them any business after what I've experienced dealing with them) would call it "good" because it wouldn't outright fail a stress test but is in deficit and it's a constant fight to keep 3/4 in balance. 1/2 are behaving correctly.

The other notable issue is the generator is burning copious amounts of oil, and while I know it's probably both rings and the valve guide seal (apparently there's only 1, on the intake), the onset was quick enough that I think the seal is the primary culprit. Won't know until I get in there to look at it, but at least it looks like I may not have to remove it from the truck to inspect/repair it. If it's deeper than that, I'll just have to deal with the smoke and plug fouling as necessary until I can do something to replace the unit. It otherwise runs fine (but I can tell the plug is partially fouled already because it's stumbling above about 700W load or so... just need access to a bench vise to clean it (I'm not gonna drop a new plug in it every 10 hours, the oil is expensive enough!)

Anyway, yeah other than that, things are what I'd call reasonable. Still unplugged, and something like only 42 hours on the genny since mid January, so I done *something* right at least LOL

Steve
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Offline MadScientist267

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Re: My Scratch Pad
« Reply #324 on: May 16, 2016, 02:25:18 pm »
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Re: My Scratch Pad
« Reply #325 on: May 18, 2016, 08:54:46 pm »
Cooked toroid choke/transformer in a 750W BTX supply boasting 62A @ 12V...

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Re: My Scratch Pad
« Reply #326 on: May 20, 2016, 02:45:35 pm »
5666-0
Before...


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And after...

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Offline oztules

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Re: My Scratch Pad
« Reply #327 on: May 20, 2016, 04:34:39 pm »
Nice work there Steve.... but did you find out why it happened?


........oztules
Flinders Island...... Australia

Offline MadScientist267

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Re: My Scratch Pad
« Reply #328 on: May 20, 2016, 04:46:52 pm »
Thanks :)

Yeah the original failed because it is one of those universal mount ATX/BTX screw pattern deals, and it had gotten installed in the ATX orientation inside a BTX case... it seems no matter how fast a fan spins, it can't pull air thru solid sheet metal LOL

I'm in the process of converting it over to a charger... got the crowbar tricked out and the toroid is ready to be put back in... add CCCV and rock and roll. This is one of those supplies that's perfect for conversion... makes the 12V rail and then derives the others on a separate board. Nice and easy to separate out (and I have plans for the daughter board as well, so a right decent return overall on putting a little time into it.)  ;)

Steve
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Re: My Scratch Pad
« Reply #329 on: May 27, 2016, 02:15:54 pm »
Couple then and now plots of battery balancing progress...

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5739-1

Making headway... much less unnerving now :)
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