EEVblog - 2011-12-01
Part 3 of the Open Hardware lab power supply design. This time the prototype build on a breadboard and some basic measurements, checks, and playing around.
@SuperEvilbug Yes, this will hopefully become a kit. The final design I have in mind will be more than what you see here, and rather novel I think.
Love the vids...
Did anyone count how many times he says bang? Lol
Thanks for the awesome video !
Love the automatic subtitles generation (6:40) : "1 milliamp current source" -> "1,000,000 carrot sauce" :D
It's good to use regular diode in series with zener diode, to minimize the voltage-temperature changes
Wow, this must seriously be the best tutorial I've ever watched. Super great job Dave!
thanks Dave for the detailed tutorial but im still left with one question i would like to build this same thing but have it be capable of 30v 10amp i know i need a different current resistor and transistors to handle the output current but im concerned about the op amp, will it be ok with 30-35v input?? thanks!
Excellent series so far. Love how it evolved from "tap, tap, tap-tap!" to "bang! bang! BANG!" Awesome energy you have.
Is there a Dave-CAD download for this or shall I just do a screen-grab?
@electrodacus Yeah. I thought it was a good example of how it can hide things, so quickly shot a separate video.
@EEVblog In either case, I love it! Keep it up.
Wow, that DaveCad-XL is impressive!
@Th3Su8 My videos are almost never "planned out", these ones included. They kinda "just happen" :->
"Fart 'alfway across the room and that'll change..."
-Dave, 2011
@randomgarfield @LeonValkenborg Yes, there are countless high current/high voltage linear and switchmode PSU's on the market, and they are cheap as chips. I'm doing something different, which will become clearer with time...
@Dysl3xicDog Not yet, patience!
@superdau You didn't miss anything, the fact that it was available led me to use it, and it was helpful to show show the issue with identical comparator inputs. You can certainly use another transistor, and that's a more accurate way to do it.
@bswain9999 Depreciation, the global economy is tanking, didn't you hear. Gotta save all the volts we can :->
Amazing Video, Merry Christmas Dave!!! (in Advance)
@horfittunge Thanks. Interesting in that it's not even supposed to be a tutorial, it's just me breadboarding a design and doing a few tests and yapping on while doing it :->
Really interesting to see the startup transient on the digital scope. You weren't able to see that on the old analog scopes!
and... Bang! ;)
@EEVblog lab power supplies as well ;) i'd like to combine power supply and charger for all kinds of accumulators
Thanks Dave
lmfao love it
I've really enjoyed following this process. Thanks.
Bad man, you made me longing for a decent oscilloscope now!
@xng14 Yep, I have a nice, and I think kinda novel build coming up, will be a while though...
@4833504F You can already buy those for $5 :->
pls recommend,,, no change constant 5v,, no matter what load does,,,, while i control from 1 to 80 ma ,,, in this case,,, constant 5v,,, current limit not affecting voltage,,,
bang!
Nice work yet again, Dave. I'm reading data sheets in your voice now. 8)
@EEVblog does it have a flux capacitor by chance? :)
@turbochargedbrick it's davecad!
@ZitroOgu You can, yes, but only if you have the package that has the pin separate. Keeping lowest common denominator here. Forgot to mention that.
Bang! Jk - Excellent vid Dave!!!
These videos are amazing . thanks to you .
Hi Dave! The design videos are great! Definitely keep them coming! What's next? pcb and case design? panel meters?
Bang! subscribed.
"BANG"
and BANG!
I love the LT3080 - great component with some surprising features. I use it a lot.
Boom! And there it is!
I am learning a lot. Thank you....keep it up!
Do you often draw schematics on paper? :)
17:20
To make the LED indicator for the "current limiting" mode work correctly, you can use comparator to monitor the voltage at pin 7 (input voltage to the transistor) (to compare it against about 0.6V - this voltage can be derived with voltage divider from the 2.5V reference).
Beauty!
@1710WL get it right! it's 1.21 jigawatts. ;) hehehe
I've been binge watching these and my brain is turned to mush but it's soooooo cool
What is IC1 and IC2 ?
princebatswater - 2013-12-07
When the nerds finally take over the earth, truly thou shalt be crowned as their king......
IngenieroCristian - 2019-03-28
HAHAHAHAHAHHAHAHAHAHAHAHAHHA, sure thing!