Computer Power - CompTIA A+ 220-1101 - 3.5
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- čas přidán 31. 05. 2024
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Professor Messer’s Course Notes: professormesser.link/1101notes
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A power supply is a critical component on every computer. In this video, you’ll learn about power specifications, recognizing power connectors, and how to size a power supply.
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the grind dont stop
never!
Indeed
We givin' it all till the squad on top
Hell yea
Word
The quality on this content is…. SHOCKING😊
Thx for the high quality content. I'm surprised its free, very helpful.
Up to this day , I do not know what is amp and Volt and what their purpose but thanks to professor, now I understand it.
Thanks so much for your videos. lm getting ready to take the Core 1 exam tomorrow. I feel a lot more confident from your videos and practice tests.
Love the mini electricity lesson! Thanks Prof!
My eyes and ears were locked in, right from the get go.
"I use fully modular in my systems"
A man of culture, I see.
My mind was blown when I learned that devices can hold residual power. I once had to press a ps4 power button like 8 times before it was done.
A+
thank you so much it simply yet detail understanding you got blessing from many like me thank you again
Fantastic!
I really liked this lesson had a lot of aha moments
Mulțumim foarte mult. / Thank you very much.
i love it
Man for real
Thank you sir
A Real American Gangster
Sir what are the units for data communication
data communication on the most basic (osi level 1) is measured in bits
If disconnecting power is non negotiable are we sure it's safe to swap PSUs without powering down
Lol I was just going to say this
Looking at it now those are redundant power supplies that are hot swappable so its safe to do it
@@saulgoodmansfingerr8527 thanks
Great question. As an electrical engineer who worked on medical grade power supplies, I can explain this. "Hot-swap" does not refer to plugging in an ENERGIZED power supply (aka, a power supply that is plugged into the wall and on) to a device. It refers to installing any piece of hardware (including a power supply) into a system that is on and receiving power from another source. The power supply you add to a running system should absolutely not be plugged in or on during that installation. So you can see, "hot-swapping" does not contradict the warning at the beginning of this video, which should always be heeded.
Furthermore, hot-swap components and chassis are regulated by government agencies and to comply with these regulation, must not have exposed metal that could be dangerously energized. So for example, if you removed a power supply from that chassis shown at 11:20, that exposed bay where the new PS would go legally cannot have an exposed voltage (above a predefined limit) that anyone could theoretically touch.
TL;DR - hot-swap means plugging in non-electrified HW into an on-but-safe system, NOT plugging in an energized component to a system. The latter should NEVER be done (and the former should only be done when designed for - when in doubt, turn everything off before doing things and don't turn them back on till your done).
@@anthonyjs8048 Great answer. Thank you my good sir.
🤩
I got electricity respect when i was 7 😂