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currently i'm dreaming of a quarter million dollar nitrous-oxide-assisted laser cutter
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Dec 19, 2014 22:21
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if you need >70MHz it's that you're not working on audio circuits or old computers and that's the problem
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Dec 19, 2014 22:22
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well no, SPI will happily run up to 40 mhz and lol at looking at a 40 mhz square wave with a scope that samples at 25 ms/s (or even a 6 mhz square wave really, you're going to cut off harmonics and a perfectly clean clock is going to look like garbage)
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Dec 19, 2014 22:28
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yeah well in my hobbyist mind lol if your scope isnt analog otherwise i have to agree at what you said
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Dec 19, 2014 22:30
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what's the fastest oscilloscope ever made and what exactly do they change to make a scope faster?
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Dec 19, 2014 22:32
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http://teledynelecroy.com/100ghz/ according to google
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Dec 19, 2014 22:33
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Sagebrush posted:what's the fastest oscilloscope ever made and what exactly do they change to make a scope faster? godfuckingly fast opamps and components every trace carefully laid out for min inductance and crosstalk basically as close as you can get to manipulating the supernatural
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Dec 19, 2014 22:45
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Jonny 290 posted:basically as close as you can get to manipulating the supernatural incorrect. yosvape is as close as you can get to manipulating the supernatural
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Dec 19, 2014 22:48
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Jonny 290 posted:godfuckingly fast opamps and components agilent fabs their own frontend components on an InP process for their 90000 series, 32ghz of true analog bandwidth (that's the 5th harmonic of 12.5Gb/s and third of 21)
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Dec 19, 2014 22:57
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and the probe tips are ceramic and break really easily, which is sad because they're really goddamned expensive
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Dec 19, 2014 22:57
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Jonny 290 posted:godfuckingly fast opamps and components how do you make an opamp faster? I know very little about semiconductor physics but it's always fascinating to me
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Dec 19, 2014 22:58
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you make it out of better physics
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Dec 19, 2014 23:28
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like GaAs
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Dec 19, 2014 23:28
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or GaInAs  what a name
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Dec 19, 2014 23:28
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I'm an expert in applied gasinass physics
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Dec 20, 2014 04:18
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oh hello are we talking about III-Arsenides??? GaInAs is funny but most people use InGaAs.
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Dec 20, 2014 22:55
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DNova posted:oh hello are we talking about III-Arsenides??? Are they meaningfully different? Idk poo poo about chemistry or detailed semiconductor physics I just like saying gay in rear end more than in gas
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Dec 22, 2014 05:53
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Bloody posted:Yeah but only if by decent you mean expensive and horribly complex We used digilent stuff in my intro to EE class I took this semester and it was pretty cool stuff. It was a prerequisite for my CS degree for some reason and I got a 1.3 in it but I did learn a valuable lesson: I will never regret not going into EE and now I know I will never want to do embedded anything unless it involves me being embedded in my grave
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Dec 22, 2014 08:32
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Bloody posted:Are they meaningfully different? Idk poo poo about chemistry or detailed semiconductor physics I just like saying gay in rear end more than in gas They are exactly the same thing written different ways. It's somewhat important to come to a consensus though because when you don't, literature search can be a real pain in the rear end. Unfortunately, that is essentially what happened. I'm working on a quaternary material so I have to search for a bunch of combinations. At least everyone agrees to put the group Vs at the end.
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Dec 22, 2014 15:36
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this thing's been sitting around forever and I finally tested it. it works fine there should be some use for it
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Dec 22, 2014 20:17
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Tin Gang posted:this thing's been sitting around forever and I finally tested it. it works fine give it to me please and thank you
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Dec 22, 2014 20:38
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Tin Gang posted:this thing's been sitting around forever and I finally tested it. it works fine  awwww
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Dec 22, 2014 21:04
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also while testing junk I realized the old adjustable dc power supply I have is rated for up to 6 amps 
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Dec 22, 2014 21:15
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Tin Gang posted:also while testing junk I realized the old adjustable dc power supply I have is rated for up to 6 amps apply it to your nipples
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Dec 23, 2014 00:03
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a thread about using oscilloscopes: apply it to your nipples
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Dec 23, 2014 00:15
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what do you call a decorative component on your 'board? a tchotchke diode!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Dec 23, 2014 04:13
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Lmfao
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Dec 23, 2014 04:18
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bobbilljim posted:what do you call a decorative component on your 'board? Bloody posted:Lmfao
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Dec 23, 2014 06:48
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bobbilljim posted:what do you call a decorative component on your 'board? 
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Dec 23, 2014 07:27
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dear robot nerds, can yall recommend a site for buying tiny mechanical parts e.g. gears, shaft couplers, shafts, & the like? i have some tiny little stepper motors and want to step tiny little things
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Dec 23, 2014 08:00
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movax posted:agilent fabs their own frontend components on an InP process for their 90000 series, 32ghz of true analog bandwidth (that's the 5th harmonic of 12.5Gb/s and third of 21) i've seen die shots of that thing, they're large enough that they had to make microstrip lines inside it to carry the signal to the actual ADC banks
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Dec 23, 2014 13:38
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Base Emitter posted:dear robot nerds, can yall recommend a site for buying tiny mechanical parts e.g. gears, shaft couplers, shafts, & the like? i have some tiny little stepper motors and want to step tiny little things mcmaster
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Dec 23, 2014 16:09
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theres also robotshop.com for more complete assemblies
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Dec 23, 2014 18:33
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check out this retro bit janitoring! a 68K single-board computer with ISA slots? boy howdy! I first read this when it was a series of articles in Radio-Electronics magazine in 1987, it was in large part how I learned to read schematics and how computer hardware all fit together at the low level does anyone even make cases for the PC-XT form factor any more?
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Dec 24, 2014 00:55
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eschaton posted:does anyone even make cases for the PC-XT form factor any more? yes, but they're aimed at the industrial market and priced accordingly
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Dec 24, 2014 01:11
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hardware owns e. I'm all the switches with the "enable" label on the wrong side of the switch. And the hand.
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Dec 24, 2014 01:18
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have a scope too
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Dec 24, 2014 01:35
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Mr. Despair posted:have a scope too Tek  I was looking at those Saleae logic analyzers someone mentioned but it looks like, for the price of their 16ch model, I could get a used HP 1660CS with probes 136 channels! LAN interface with X11!
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Dec 24, 2014 01:54
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Have an oldschool tek (the cool tek that isn't broken like the one above, rip channel 4) too Both are better than the rigol that died months ago and afaik is lost in the abyss of rigol's rma service or something. Dr. Despair fucked around with this message at 02:30 on Dec 24, 2014 |
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Dec 24, 2014 02:00
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| # ? May 5, 2024 00:29 |
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Tek 24xx series are v nice scope imo some of the best 4 channels scope of all time is that some P11 phosphor? (option 78 i think)
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Dec 24, 2014 02:16
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