My boss... she wanted a pulse of 15V at 125kHz with 10% on-time, switched by the microcontroller.
On Thursday I made the schematic, today I slapped the stuff together and...
...that stuff works right from the start like a charm!
I'm so proud of myself that I had to share my success even if nobody gives a shit :D
Those beautiful slopes, so steep and so quick, so awesome! They are actually so beautiful that I am pretty confident that it can go even faster :D
How expensive is that equipment, i remember my friend frying one in highschoolThose analog ones aren't that costly anymore... dunno, maybe a few hundred euros. We have a few digital ones that were around 20.000€ a piece, like a year ago. And that's already with percentage off cuz University and stuff. The old and cheap ones are good enough for the stuff I do atm.
and what is that, explain to people like me ( dum dums).Well, basicly it's a simple voltage pulse of 15V. But it's like really short which is one of the tricky parts... as you can see it's around 700 nano seconds long (700*10^-9 seconds/that's way less than a blink of an eye). It's just for testing a certain sensor setup.
I studied something like that on high school, but I dropped out because our teacher on engineering practice was a moron.
We like seriously had to work with 20+ years old equipment.
My boss... she wanted a pulse of 15V at 125kHz with 10% on-time, switched by the microcontroller.
On Thursday I made the schematic, today I slapped the stuff together and...
...that stuff works right from the start like a charm!
I'm so proud of myself that I had to share my success even if nobody gives a shit :D
Those beautiful slopes, so steep and so quick, so awesome! They are actually so beautiful that I am pretty confident that it can go even faster :D
Today I had a good fuck with my wife :mrgreen:do did I :D visitors can't see pics , please register or login
My life is sooo sad and boring :cry:
Are you certain, that he was the moron? :rolleyes:
@ nightmare:
Sooo... why should 20+ years old stuff not work to teach you basics of it? Why's the teacher a moron then?
My boss... she
That looks like a Fourier Transform, still not fast enough.Reminded me of this masterpiece:
I lack the proper English term but I guess my brother was a Structural Engineer too.
He worked for a small but international recognized firm which build climate chambers... but those big ones.
I know he was responsible for several chambers for Audi, VW and BMW where they test their prototypes and new cars in. One chamber with a temp range of -65°C up to 110°C. Pretty impressive stuff with all the statics, considering the extreme temperatures which work with the whole structure.
Before he studied, he became a skilled labor for climate isolation. So he knew all the isolation stuff and had the studies about constructional engineering on top of that...
He was less annoyed by contractors but he cursed every single architect he had to work with. He always complained that they made plans for some sky palace which wouldn't stand for more than 1 hour stable if it had been built like they wanted it :D
Anyway, back to topic :P
I actually have a few screenshots I could post about what my real challenge to design is atm. That pulse was just something to get more time for the real thing. Though I won't do it if nobody actually cares about it cuz it would mean a bunch of explaining :wink:
But keep those stories about your electronics experience coming... it's interesting to read.
I got tasered once, does that count?
Those analog ones aren't that costly anymore... dunno, maybe a few hundred euros. We have a few digital ones that were around 20.000€ a piece, like a year ago. And that's already with percentage off cuz University and stuff. The old and cheap ones are good enough for the stuff I do atm.
Well, basicly it's a simple voltage pulse of 15V. But it's like really short which is one of the tricky parts... as you can see it's around 700 nano seconds long (700*10^-9 seconds/that's way less than a blink of an eye). It's just for testing a certain sensor setup.
I am using my microcontroller, which supplies me with 3,3V, to switch my circuit I built which then provides me with the 15V pulse I need.
Basicly, I built a really fast switch :) The spectacular part is actually the really sharp edge and that there is no oscillation after turning it on and off again. The overall sharpness of the pulse is just beautiful. I am just excited cuz I didn't expect that my quick'n dirty solution would work that nice.
On Thursday I am planning to half the time of the pulse. Hopefully down to something around 400ns.
Mathematically it's sweet when you just take a look at the edge. Let's assume that the raise of the voltage happens in something like 35ns, which is probably still too long compared to the real pulse, that means the voltage makes a jump from 0V to 15V in that time window:
That already equals 0,395V per ns. Soooo sweet... :D If I can half the pulse time, I doubled the Voltage per ns! Probably doesn't sound that spectacular but it actually is, considering I build all that with parts that sum up to 25cents or something :wink:
Also, fail in three words.
what exactly is your job called molly?I'll be an Electronic Engineer specialized in Microelectronics and -systems. In theory I am able to design a chip, fabricate it in a clean room, make an ASIC out of it, design a circuit for the system using the ASIC, fabricate the PCB, test the circuitry. Personally, I specialize on circuit and PCB design, including testing and "quick'n dirty"-software design :) I'm the hardware dude basicly.