General > General Technical Chat
How many EEs know this basic thing?
pdenisowski:
On a similar note: I made an entire video explaining why max power supply output does not equal max output voltage * max output current.
And then when some people still weren't convinced, I wrote a MATLAB program to demonstrate :)
Edit: we also turned this into a webpage:
https://www.rohde-schwarz.com/us/products/test-and-measurement/essentials-test-equipment/dc-power-supplies/understanding-derating-curves-_256009.html
Gyro:
--- Quote from: ebastler on May 09, 2024, 08:52:25 am ---To get back to the OP's question in the thread title, I sure hope the answer is "all of them".
--- End quote ---
Any that you would hire anyway!
The thread title and post read as if the OP has just read their first datasheet and made a 'discovery'.
joeqsmith:
--- Quote from: terrance on May 08, 2024, 09:28:44 pm ---A device can't reach multiple maximum ratings at the same time, and ratings have their conditions.
...
Does not mean
1. It can work at 15V input and regulate 800mA output at the same time.
2. I can regulate 800mA at 125C ambient temperature
--- End quote ---
First thing that came to mind was high voltage relays. Worse, as companies are bought and sold, marketing and managers strips details from the datasheets that EE's require. Don't get me started.... :-DD
SiliconWizard:
TLDR; RTFM.
terrance:
Actually it's not about read or not, it's about how people understand how components work.
I saw too many circuit deigns ignoring some fundamental limits....
too many "why my 800mA IC turned into smoke at 200mA?"
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