TechBits 9 - Power Supplies Demystified (Part 1 of 2)

[MrCrashReboot]

hi sciguy14, I enjoy watching your videos, I'm suggesting you make a video on motherboard voltage regulators to inform your viewers on quality motherboard components, peace out

[TheCompScientist]

so in order to determine what wires are connected to which rails i can look up the specs on the back of the psu, is it possible that the wires may be color-coded to indicate which rails they belong to?

i just bought a 4 12v rail (19A each) power supply, HEC Zephyr 750w

[sciguy14]

The wires are not color coded like that. Most power supplies can dynamically select a rail based on load.

[spartan7942]

Could you do a cable management video? If you have time.

[sciguy14]

It's on my list...I've been very busy.

[kkyy23]

is that makeup? blusher?

[kingfreddys]

you're videos are the clearest and most informative out there. Keep them coming plz.

[xxShanekunxx]

I hate to admit it, but I find myself getting lost. Could you please recommend some study that's not "a mouse click is done with the left button",nor quite as advanced as this? Thanks in advance.

[sciguy14]

What don't you understand? I can try to explain myself further if you would like.

[madog28]

dude not tryin to rag on your amazing videos but do you have cue cards or something

[380SlugPenetrator]

What kind of monitor is that in the background?

It looks really nice.

[sciguy14]

Its a samsung syncmaster T220HD

[EnT271]

i also have some brown wires, know what those are?

[limboy1]

Ground...I think???

[sciguy14]

Ground is usually black. Brown may be power sense.

[XmodsNOS]

i have 200p 24" screen XD

[AbtinX]

I'ts a great screen, 20 000:1 dynamic contrast and 2ms speed. Only drawback when gaming is that the maximum resolution is set at 1680x1050.

[JimmyDWins]

Thank You SOOO MUCH! I've known the power supply was pretty vital for a computer build for some time now but never quite understood the whole rails, amps and voltage thing. This cleared up so much! Now I feel so confident choosing my PS for my build in the summer. Maybe for your next info video do it about overclocking?

[sciguy14]

I've already written the script for my next episode, and the topic is indeed overclocking. Just haven't had time to film it yet.

[XxXGoldblingXxX]

I have a PSU (on the comp. i'm building) with all the wires already out, that shouldn't be a problem should it?

[sciguy14]

What do you mean the wires are out?

[XxXGoldblingXxX]

I mean There are no connectors to the actual PSU and you get stuck with all the wires outside even when you arent using them

[sciguy14]

You tuck away the wires you don't need.

[Films4You]

Do Power Supplys step up the power before reducing it, e.g. 240> 2000 then say to 2000> 12, 3.3, 5 volts... Done to make the transformer much more efficient for its size. What do the mean by Switched?

Thanking you :)

[sciguy14]

As per my knowledge, computer PSUs do not step the voltage up first. But I'm not 100% certain. When I said switched, I was talking about PSUs that can use either 120 or 220V, but require you to select the input voltage with a switch on the back.

[TheFusionIcon]

LOL! There's a mini USB fridge on the desk!

[RickArter]

Great vid man keep it up 5/5

[zoop425]

oo cool im gana try that rite now

[zoop425]

nice did you photo shop the pics on your screen or use a power point? nice job.. first comment ..woot!

[sciguy14]

I put the images there in premiere editing. You can use the corner pin tool to do so.