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What's inside the Rigol DP832 precision lab power supply. Is it identical to the DP832A
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26 авг 2013

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Комментарии : 136   
@GLITCH_-.-
@GLITCH_-.- 8 лет назад
A COLOR display that is SOFTWARE limited to MONOCHROME?!?!
@nerdyrcdriver
@nerdyrcdriver 8 лет назад
The rust is kind of inevitable while dealing with steel that doesn't get coated with anything. I work for a company that is basically an OEM for various things. Lots of our sub assembly parts have to be rushed to be powder coated during certain months because they will rust if we have stock lying around waiting to be sent out. Even just during a holiday break we had some output shafts from the gearboxes rust. We would have to take the units apart, machine the rusted shafts down, make special rollers to press fit onto the smaller shafts, and put it all back together. It was far cheaper to make a whole new set of non rusted shafts. It may have rusted during shipping over seas. We had a limited run of European units we had to make and they had all sorts of issues from the humidity in shipping.
@galleno64
@galleno64 10 лет назад
Another Sweet vid Dave! Thanks for being here!
@maxwang2537
@maxwang2537 2 года назад
Nice video as always Dave.
@Stuen4y
@Stuen4y 10 лет назад
I would love to see a teardown of a modern computer PSU (3.3, 5 and 12V ones)... There are plenty of detailed reviews around the net but nothing gets close to EEVblog level of detail.
@EEVblog
@EEVblog 10 лет назад
Thanks, added datasheet link.
@TheHuesSciTech
@TheHuesSciTech 10 лет назад
Quote from LM4140 datasheet: "The mechanical stress due to the PCB's mechanical and thermal stress can cause an output voltage shift more than the true thermal coefficient of the device." When you're talking super high precision, bending the legs, and therefore the silicon, and therefore the silicon atom spacing, therefore the resistivity (just making things up here) can dominate other sources of error. The datasheet goes on to recommend a cutout in the board, just as seen in the video.
@AureliusR
@AureliusR 10 лет назад
SWEET! Good on ya Dave!!
@snarkyboojum
@snarkyboojum 10 лет назад
True. It's nothing close to a commodity. Cheers for the insights, Dave!
@DO9ZZZ
@DO9ZZZ 10 лет назад
Nice to see you up well again. Since so many people think they have to abuse you, I have to say your Bolg is just very good. I enjoy every second of you videos. And I learn a lot out of them. Just give a crap on those who write stupid comments about your work. Keep on Dave! I have a lot of respect by watching your vids. Alex
@ChipGuy
@ChipGuy 10 лет назад
Nicely done
@DJSolitone
@DJSolitone 10 лет назад
I love how you cut this warranty sticker BS !! It's a sacrilege I also do quite often and I enjoy it very much. It's like finding the Swiss virgins (the ones rubbing oil on screwdrivers) on a desert island !!
@NerdNordic
@NerdNordic 10 лет назад
Yeah, It's probably just you. I find the "TT" highly interesting and its fun to see how different manufacturers do things! Keep it up Dave! :D
@mata7648
@mata7648 10 лет назад
Thank you. That explains a lot.
@marker113
@marker113 10 лет назад
great video, just starting to learn electronics in general and your teaching is captivating. how you get high pitched reminds me of stewie on family guy:)
@rusty0101
@rusty0101 10 лет назад
The faster the processor, the more critical the timing of the data being passed across parallel traces becomes. The 'twists' put in the traces is designed to make each of the traces in that collection electrically the same length. It is not at all unusual for those traces to be several clock cycles in length. Most processors can't handle bit 1 showing up on a different clock cycle than bit 7 of the same word.
@DavidLeeMenefee
@DavidLeeMenefee 10 лет назад
You sound a little better. Good for you. Thumbs up on the video.
@6417893265q784256128
@6417893265q784256128 10 лет назад
Thanks very interesting video !
@TheXGamer969
@TheXGamer969 10 лет назад
Yay! New video!
@EEVblog
@EEVblog 10 лет назад
The test equipment industry is not a "volume" industry when compared to consumer stuff. And the higher up the food chain you go, the lower the volume. And the higher end gear has more R&D for that lesser volume, so the company needs to pay for that. Then eventually that top end technology filters down to the lower end gear. That's why the low end volume only cloners virtually never innovate and push the industry forward.
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