Do all the things like ++ or -- rants, post your own rants, comment on others' rants and build your customized dev avatarSign Up
From the creators of devRant, Pipeless lets you power real-time personalized recommendations and activity feeds using a simple APILearn More
Search - "transistors"
Yet another rant about crappy electronic designs.
Just now I was cleaning my desk and stumbled upon some old hard drive in a caddy that I still had laying around.. I figured, let's plug it in and see whether the drive still works. And to some extent, it does! Except that every few minutes it craps out on me. And after disassembling the caddy, I think that I know why.
Just as background information, hard drives work at 12V and generally require about 10W to spin their motor. Meanwhile USB operates at 5V. So a boost converter needs to be present in the controller to step up the voltage and power the drive.
Now what's a boost converter? It's an inductor, a capacitor, a transistor and a diode in a specific arrangement (if you're interested in the design, check out https://youtube.com/watch/...), along with feedback circuitry to stabilize output voltage. Now that transistor is important.. it switches at very high frequency, and its rise and fall times create heat. In the particular transistor used in that controller, it apparently causes the transistor to operate at 65-68°C. That's quite toasty IMO, and overheating may be why the controller is so unstable. But the Chinese manufacturers thought that it's just fine and okay to be sold without heatsink or some research into transistors with better rise and fall times.
So the hard drive craps out on me and yet again it's because of certified shitdesigns. MOTHERFUCKTURERS!!!!27
NVIDIA have just announced Titan V, with 12GB and 21 billion transistors.
But can it run Minecraft with shaders though?5
Sorry guys, I know this is devRant and probably not a place to post this but am fucking burning with fury and fatigue! I should probably develop elecRant and post it there instead.
I FUCKING HATE POWER ELECTRONICS!!
I am in my final year of electrical engineering and I can fucking say with confidence that power electronics is the most fucked up unit I have seen in my life. A whole load of useless math from simple RLC circuits just to make students' lives miserable. For those who might not know, power electronics is some unit that involves use of solid state electronics(transistors, diodes etc) for power applications(switching mostly). Basically things like inverters and converters. UPS systems are an example of their applications.
Now don't be fooled by how that sounds cool and so smart, this shit is fucked up. These circuits in the attached picture might just seem like simple RLC networks with some BJTs, but they are devils in their own right. They fucking need some advanced unnecessary calculus and Fourier analysis to even calculate the simplest output current!! Worst still, some of these motherfuckers have more than 1 mode of operation,needing one to analyze some fucking 100+ waveforms. I fucking hate this shiit! I hate it!
You might say that i am just being lazy and don't want to study. Let me tell you something, FUCK YOU TOO!!20
I found something even more effective than coffee on hard Mondays mornings. A fresh cup of technology, just the right quantity of silicium, transistors and sensors with a pinch of cloud connectivity.9
I am so fucking sick of hardware design and integration projects.
First thought, let's outsource. Except the best quote we got was $2.8M for a fucking 10 by 10 board with 200 components. What the dick shit is this did I send the email as Bill fucking Gates or something so they all thought I'm shitting gold bars?
Micro X comes with awesome frameworks and SDKs but you can't use it because it doesn't have those extra 2 pins you need.
Micro Y has them but they're not 5V tolerant so you can't use the $8 chinkese relay board, you have to add your own onboard relays which will cost you $25 and a blowjob for some FUCKING RELAYS
Then there's micro F to the rescue! enough pins, 5V tolerant, awesome SDK give or take a few months guessing how the fuck to use that 40Mb of C code library & fixing someone's fucking code, but wait, you can't use it because it has no external interrupts so basically you have to keep polling inputs and can't go to sleep, so you need to run the core at full speed and guess what the fuck it is more power hungry than the hottest trophy wife at 200mA.
No problem, fuck this shit, let's go STM like I told you so in the beginning - but I should be the one to pick the micro and all power components. Here's the specs, call me when it's done, we'll fuck with some of the web apis in the meanwhile. 2 weeks later: fuck all of you, I can't find what you need!
Then smartass #173 comes with the brilliant idea to try them chinkese PLCs with integrated HMIs, wtf they're cheaper than what you idiots are building?!. Sure, let's go for it. Spend $3000 on test units, wait 8 weeks because EU customs and taxes, then finally - NONE are usable despite the suppliers who swear it works, it has transistors on outputs, i'll be fucked it even lets you stick your cock in and gives you a tickle.
Then dickweed C-motherfucking-TO goes like, sure, let's go bare metal again, wtf we are old hardcore fucks with big cocks, plug a $8 pic24 and it will do the job. Except you have to spend 18935718 fucking years writing everything in C and when you're almost done guess what the fuck happened, we still need another micro so we can have ethernet and connect to a MQTT server.
No problem, trash all the work, let's pull the big guns, pic32mx-what-the-fuck, spend 1 month getting the toolchain to work and 2 more months writing all sorts of fucking signs and dashes and commas and brackets in MOTHERFUCKING C again and when we all think omfg we're done, some moron decides to test the board at high humidity and low temp and guess what the fuck happens - it breaks because that shit isn't rated what we need, but the fucktard was on paternity leave 5 eons ago when we started because his fucking wife gave birth and he couldn't spend a couple hours testing a blinky in his own fucking house in the fridge or wherever the fuck, so he just said yes and now guess what - we're all fucked.
Then let's try this shit board, it has the USB support and we can put one of them cheap ass ethernet chips, we'll just connect it to android via OTG and let the fucking google connect to the API over 3G. Except motherfucking android and its usb stack add some 100ms of latency which is basically more than I need to cook 3 fucking meals or some idiot needs to die electrocuted because the estop button doesn't shut down the relays fast enough.
2 years later I still don't have a workable prototype. Fuck my life. Fuck whoever planned this shit, they must have been brain fucked, in fact fuck this shit altogether. Fuck computers and processors and servers and micros and every fucking atom of copper in this fucking house.3
Transistor sizes are getting smaller and smaller by the day, though we cannot go below the size of a virus due to compartment limitation but the tiniest is smaller than a DNA.
Having chips designed at such a tiny scale looks more scary to me than amazing. Imagine my manager screaming at me, I can give him a slap on the face and infect him with 1 million A8 chips. Now that would be amazing because I just successfully turned him into an iPhone 6.
Me: Hey Siri, what's the weather now?
Manager: 32 degree Fahrenheit, high wind, low humidity.
Me: Yeah that's what's up, you won't be needing an upgrade anytime soon.10
I have a 16 year old son who is off-and-on showing interest in learning electronics. He wants to work for NASA someday. I’ve looked at dozens of Arduino and Raspberry Pi kits but I feel like he would benefit not so much from “mostly done for him” types of kits that are more like toys, but the kind that teach more fundamentals like resistors, capacitors, transistors, relays, etc. In other words, knowing first what the principles are behind the fancier kits. Do any of you have a recommendation of kits that start with the fundamentals, but that can still be inspiring and engaging?13
If we made computers out of Fry's transistors, it would cost a couple billion dollars. These better be insanely deluxe.1
The Moto MC68000 CPU in the original Mac had 68k transistors. Apple sold 372k units in 1984. 68k x 372k=25.3bn
The A12X SoC in an iPad Pro has 10bn transistors.
So, if you’re inclined to really unfair comparisons:
3 iPads => all Macs sold in the first year
Found via https://twitter.com/benedictevans/...
Wait, so pressing a key on a modern system and it showing up on screen is slower than it was back in the 70s and 80s because the ratio of transistors to clock speed is worse?
I read the other day that tech companies are trying and failing to make chips smaller and faster by reducing transistor size.
Yet Apple does this with ease. You know how?
They remove or REDUCE the number of transistors to make it smaller.2
If transistors switched as fast as your ex left you, we’d become a galactic civilization even without P = NP.2
Half of the courses we had in our college were about electronics. Except Microprocessors and Transistors, it's not relevant.
We even had chemistry and engineering drawing. So we essentially wasted more than half of our time.
Besides languages, weren't taught anything about real world software development.
Nothing about how to work with an existing code base, version control, design patterns, system design, creating a website, debugging, functional programming, scalability, reliability.
The industry should be involved in setting the syllabus and also contributing part time teachers.2
• 6.9B transistors
• 6 CPU cores
• 4 GPU cores
• 8 “neural” cores
• 5 trillion ops/sec
• 512GB addressable storage
• Oh and the rest of the “stuff” for a SoC
tl;dr Apple is the leading chip innovator and creator in the world.
Don't @ me4