Study Break Episode 1: Make a Power Supply

[ElectricalNick]

Thanks for giving me some inspiration to make my own power supply. I posted a variable power supply video response - I might come back to it and make it bi-polar like yours.

[warmaster5128]

how manny watts is that power suple

[hilltop7]

You should have put DC filter caps on the output stage of the bridge. it helps filter the DC from AC and smooths out any possible ripple on the output to be more stable and helps with cusion any device that powers on or demands surge current..

[stuDIYbreak]

@boomer5901 If you need 12V and 4A, I'd strongly consider repurposing a computer ATX power supply. There are lots of good tutorials of how to do this online.

[brandon14872]

im a total pro with soldering so i dont need my dad or mom, and by the way im 12

[kraig800i]

A bit shaky but I've got a few picsup on photobucket under kraig-800i if that helps. It seems to be a german 4 pin din socket (I think...) I opened it up 2 years ago and its all resistors, caps and possibley transistors.

No IC chips or Valves in sight I'll get a pic of the insides uploaded if that will help.

[kraig800i]

Hey I've got an old 70's RSD 20 into 8 audio mixer minus its power supply :(

Is there anyway to figure out the power it requires ? I can't find any documentation anywhere and apparently the company went bust after changing to Sound Craft.

[stuDIYbreak]

@kraig800i : do you have a picture or some other info on this thing? That might help, thanks.

[tperk789r]

you guys made it look so easy! I would have like to have seen how mounted the bread board, other than taht it was a great video!

[lennyhome]

Nerds.

[dheeey012]

Can you please post the materials here? my speaker is not that good that's why i can't here the exact materials needed. thank you. -Dave from Philippines

[MrWesley3000]

What is this built to do?

[whackitov]

wtf is soddering? sodder the ends of the wires, sodder the components.....its SOLDER, its got a L in the middle of it, its SOLDER, not fkn sodder

[ycttafm]

@whackitov Pronunciation guide: [sod-er]

[dodgedart74]

i wanna b your friends! lol

[Thetruthishere11]

Boring!

[bronze83]

nice video. Great job.

[sorstudios]

Great video

[ameersabergowayed]

I want make power supply its outputs 12v ,

5v Thanx

[IIIDarkWorlDIII]

@ameersabergowayed check these out: 7805, 7812, and 317's

[ameersabergowayed]

@IIIDarkWorlDIII there are wanted from me project power supply from 7 or 8 months ago , thanx for ur comment to help me .

[cumesoftware]

Low electrostatic resistance, or low equilavent-series resistance (ESR)?

[stuDIYbreak]

The second one, my bad during filming ;-)

[cumesoftware]

It happens to everyone.

[mts0628]

Wow. Is Purdue like the melting pot for nerds and geeks? My GF's dad went to Purdue and he is a nerd too. What gives? It must be the water. Anyway, ok project and techniques and decent explanations. You should make a power supply with variable voltage (0-30 VDC), +5 VDC, and +-12 VDC. Unless you are using the power supply you made to power amateur radios (kinda weak in the current department though), the voltage is too high for most projects including IC projects. Decent start though.

[CoolDudeClem]

If I was to build on of those I would use a couple of voltage regulator chips in there too to get rid of any ripple. When you were explaining the wire colors on the ac cord, did you say that the neutral and the ground (or earth) are actually connected together where the AC power comes into the house? I thought they were always separate wires

[antpap13]

nice job! gz

[sonken90]

good job guys,

[ballgreen]

mine building a bench power supply using lm317t i'll be able to ruduce the outvoltage from 1.5volts to 37volts

[basslover201]

whats the amperage of this power supply

[bgoltto]

For this power supply need embedded analog voltage meter :) From simple analog multimeter, for example))

[rroge5]

do a diy electrolytic capacitor vid please

[rroge5]

lame, i thought you guys were going to use 7815 and 7915 's. my experience with this kinda power supply is that it does nto give high amps with a steady voltage.

[stuDIYbreak]

Heh, there are decidedly much more cost effective methods to create power supplies, it's true. That said, we had fun building them and it was a good learning experience.

[IIIDarkWorlDIII]

@stuDIYbreak mate you ve done a good informative video please dont even answer these kind of comments

[IIIDarkWorlDIII]

@rroge5 hahah you think you are so genious cause you used 79xx and 78xx to make dual polarity ps? wow mate

[RasTmaan]

Great Job Geeks !

[rawiristone]

holy shit that guy looked like mc lovin hahaha

[MajorUtah]

nice job guys.. and the transformer O.Prime rocked...

Major..OUT... *Xy;

[selfalready]

cool

[rcjera]

You could due with a fan and vents!

My first power supply i made the transformer overheated a little i did not putt one in..

Nice work!!!

[Graville]

Thanks dude, I have to make one of these as a Lab project, with bipolar 10 volt rails.

This video should help a lot.

[cribcat1]

wow, could've done without the Transformers picture but good info in the Video.

[MentalFallout]

"Soldering is very hot, so get an adult to help you, like your mommy." xD Nice, anyway kudos for the Vid. I enjoyed it, along with your amplifier video.

[stuDIYbreak]

haha, thanks, appreciate the support

[MentalFallout]

No problem, I'm just glad to see I'm not the only person who does stuff like this all the time. x]

[nehan455]

Hi guys, excellent vid. Could you tell me the manufacturer and model of that nifty soldering iron you're using. Thanks in advance.

[stuDIYbreak]

what you're looking for is the Weller WES51 (best soldering iron ever, btw)

[nehan455]

Thx; your soldering iron tip looked pristine. I've always used the cheap rs ones that oxidize in a heartbeat if you don't keep them meticulously tinned.

[IIIDarkWorlDIII]

@stuDIYbreak can you tell the price give or take?

[stuDIYbreak]

@IIIDarkWorlDIII This was a fairly expensive build actually, about 50 bucks or so when all was said and done. It was good for demonstration and informational purposes, but if you want a more useful supply, I recommend modifying a computer ATX power supply. You'll get quite a bit more bang for your buck and there are abundant instructions online.

[MalaTemporaCurrunt]

peace to u 2

[themetallicafan1]

wow nerds