• Electrical Engineering V3
    3,104 replies, posted
Got some very pornographic mail today. [t]https://i.imgur.com/z2xpSyI.jpg[/t]
[QUOTE=nikomo;49227780]Got some very pornographic mail today. [t]https://i.imgur.com/z2xpSyI.jpg[/t][/QUOTE] That's one serious looking book
Würth Elektronik do some nice shit.
[QUOTE=nikomo;49227780]Got some very pornographic mail today. [t]https://i.imgur.com/z2xpSyI.jpg[/t][/QUOTE] I think that books cover design is arousing but idk anymore I was going to take an EE class next quarter but no room. The aero prerequisites list is the largest of all departments and it's absolutely brutalizing my ability to take fun classes outside of my major :(
You can't see it in the picture, but there are parts of a schematic done with some sort of transparent material on the front, so if you have the light at the right angle (which is pretty wide), you can see a schematic on top of the book cover. I got a fairly good shot of it. [t]https://i.imgur.com/UyLRrcL.jpg[/t] [editline]2nd December 2015[/editline] Took some pics of what's inside. [url]https://imgur.com/a/dWvPP[/url]
Would it be dementrial to asimple 230v AC ceramic heating element if it's powered by 230v DC instead?
[QUOTE=Van-man;49237660]Would it be dementrial to asimple 230v AC ceramic heating element if it's powered by 230v DC instead?[/QUOTE] No it would work exactly the same.
Plasma TV's are the fucking worst. Like let's dissipate 400W and rely on natural convection alone for cooling. On one side you have these tiny heatsinks with 4 to 6 TO-220 devices on them all roasting to death. On the other side they used surface mount packages and as a result the capacitors are almost too hot to touch from the thermal transfer through the PCB. [thumb]http://i.imgur.com/uwQfuQj.jpg[/thumb] I got it up and running by replacing a bunch of IGBTs and diode arrays on the scan drive board, and after a bout 20 minutes of being powered on with somewhat erratic behavior it blew the sustain board pictured above.
Also, do these prices seem normal to anyone? [IMG]http://i.imgur.com/MGPCV5r.png[/IMG] Cause it seems kinda insane to me but it's the same story on mouser or newark.
[QUOTE=No_Excuses;49242650]Plasma TV's are the fucking worst. Like let's dissipate 400W and rely on natural convection alone for cooling. On one side you have these tiny heatsinks with 4 to 6 TO-220 devices on them all roasting to death. On the other side they used surface mount packages and as a result the capacitors are almost too hot to touch from the thermal transfer through the PCB. [thumb]http://i.imgur.com/uwQfuQj.jpg[/thumb] I got it up and running by replacing a bunch of IGBTs and diode arrays on the scan drive board, and after a bout 20 minutes of being powered on with somewhat erratic behavior it blew the sustain board pictured above.[/QUOTE] I have my families old plasma and the amount of heat it puts out is terrifying. The fans are all dying and from being caked full of dust since I wasn't allowed to clean it out. I'm pretty sure it's going to just combust someday
[QUOTE=No_Excuses;49243425]Also, do these prices seem normal to anyone? [IMG]http://i.imgur.com/MGPCV5r.png[/IMG] Cause it seems kinda insane to me but it's the same story on mouser or newark.[/QUOTE] Those prices suck hard.
The last plasma I had had six fans in it to keep it alive. Have they stopped including those in the last 17 years?
[QUOTE=Fourier;49244117]Those prices suck hard.[/QUOTE] Help. But I think this is more of a Canadian issue than anything. [QUOTE=MIPS;49244361]The last plasma I had had six fans in it to keep it alive. Have they stopped including those in the last 17 years?[/QUOTE] It looks like around 2010 they stopped putting them in for the most part. My personal plasma has 4 fans in it although it failed anyways :v: At least it wasn't heat related.
Well jesus christ. I bought Reaktor from Native Instruments, and its the hardest plugin to describe. Because its not just a synth plugin, or a vanilla synth. Recently they added blocks, literal blocks of modular synth modules that you can patch together to use to create really weird sounds. Previously, it featured a bunch of really well made sounds and modules and synths that were all known for just sounding [I]right[/I]- lush and warm when needed, cold and digital when not. The thing is, its actually like a DSP dev platform for synthesis, music, and film scoring. Because holy fuck the rabbit hole goes deep here and I've made a [I][B]wretched[/B][/I] mistake buying and installing this before finals. You can either create "ensembles" from "modules", which are instruments constructed from preset blocks, or get really deep. A module is something like an oscillator, an LFO, or the utility that processes data from external keyboards to send to the osc's. Its a fun mode, and its easy to wire up and grasp if you've done stuff like this before. However, you can go even deeper and create your own modules and layout your own dsp functions using a bunch of prebuilt little tiny blocks that NI has made. Its ridiculously rich in depth. The amount of documentation is inane, but there's no reason you couldn't build any kind of synth you can dream up completely from scratch in here. And it has tons of analog modelling functions/modules/components/bitsandbobsidk so if you want to make a neat analog synth, go ahead. Want to make a random generative noise machine? yup, it can do that extremely well and so goddamn well I've left it one for the past 15 minutes because its so lovely. I'm blown away and have no one to nerd out with. Here's a couple screenies of what I'm talking about, along with snippets of that noise: [url]https://soundcloud.com/nofuchsgiven/random-generative-noise-synth/s-cR1Ok[/url] demo of a couple presets [url]https://soundcloud.com/nofuchsgiven/well-im-finished/s-btYqN[/url] new favorite, need a use for it Block diagram of the noise machine, this at the module level: [t]http://i.imgur.com/gLnrqpb.png[/t] One level deeper, this is the inside of a bassline synthesizer [t]http://i.imgur.com/vooOMNZ.png[/t] This has also completely made one of my synths obsolete, as it actually sounds better than it and has far more depth. The best part is that this entire program can be yours for only $100 (if you choose to pay, I had to because I'm writing tutorials and shit for a website now :c) if you are in a uni and can show a student ID. Otherwise, its $200. But honestly thats not bad for what I've heard so far, but at this point my perception of cost is warped considering how much audio shit I have to pay for in the next few months. anyways yknow the usual overly verbose text wall and such and now i'll disappear to start reading through the manual so I can continue putting off finals work and writing my articles and stuff edit: Its been three hours, I've been through all the synths and one of the noise gens. Haven't touched modular blocks yet or the pile of community stuff I downloaded. Its going to be a long night. rip.
PCBs arrived! [t]https://my.mixtape.moe/qhdiik.jpg[/t]
I hate working on electronics that has been owned by a smoker, always covered in a film of sticky tar and dust that has stuck to it. If you smoke do it outside or preferably not at all ffs.
[QUOTE=Chryseus;49251985]I hate working on electronics that has been owned by a smoker, always covered in a film of sticky tar and dust that has stuck to it. If you smoke do it outside or preferably not at all ffs.[/QUOTE] I knew a guy who used to run his own PC repair shop, he once told me that some of the motherboards were so encrusted with that shit he'd have to scrub it off with 409. :sick:
[img]http://i.stack.imgur.com/GIfZ0.jpg[/img] :vomit: [img]http://i.imgur.com/RrmU2e3.jpg[/img] What the hell.
I feel sick
That PSU [I]actually[/I] looks like it's growing [I]fucking mold[/I]... Truly, there is no God...
[QUOTE=Van-man;49237660]Would it be dementrial to asimple 230v AC ceramic heating element if it's powered by 230v DC instead?[/QUOTE] As long as you mean 230v RMS AC (which I think you do) then no it would be fine! Be careful if you're using a switch to turn it on and off though, DC is much more liable to arc when the switch is opened, so the ratings are totally different.
[QUOTE=Chryseus;49254233] [img]http://i.imgur.com/RrmU2e3.jpg[/img] What the hell.[/QUOTE] I was once at a guys house who had keyboard like this, actually it was even worse, and he wanted that I fix some stuff. Let's say I never went there again because.
[QUOTE=Chryseus;49254233][img]http://i.stack.imgur.com/GIfZ0.jpg[/img] What the hell.[/QUOTE] I've pulled power supplies like that and I just toss them. Not worth it.
It's times like that I throw the parts in the shower with a good brush and scrub them in a hot wash. Never fails.
[QUOTE=MIPS;49263432]It's times like that I throw the parts in the shower with a good brush and scrub them in a hot wash. Never fails.[/QUOTE] I like electronics as much as the next guy but showering with them is a bit much.
[QUOTE=MIPS;49263432]It's times like that I throw the parts in the shower with a good brush and scrub them in a hot wash. Never fails.[/QUOTE] I can totally see you in a bathtub along with the boards of a old terminal that was used for a decade by a chain-smoker
[QUOTE=Van-man;49264769]I can totally see you in a bathtub along with the boards of a old terminal that was used for a decade by a chain-smoker[/QUOTE] Add in "Rubber Ducky" and that's border-line funny.
[QUOTE=Van-man;49264769]I can totally see you in a bathtub along with the boards of a old terminal that was used for a decade by a chain-smoker[/QUOTE] Fuck bathing with this shit. Some of the stuff that I scrub off this stuff is vile. Should of seen it though when I had the guts of a rear projection TV in the tub soaking for a day. CRT's floating around. :v: In other news, lets take a moment to appreciate the engineering of the power supply in a mid-70's professional tape machine....which I would like to point out slid out after unplugging a half dozen connectors and removing four screws. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_1972.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_1975.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_1976.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_1984.jpg[/IMG] Some bugger was in here before me and was fucking about with the oscillator module. Nasty. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_1991.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_1993.jpg[/IMG]
That's some nice wire management.
[IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2021.jpg[/IMG] Oh yeah. Uh-huh. That'll sure blow the fuse. Whoops. :v:
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