Archive for the 'General' Category
How to Add Variable Voltage to Your ATX Based Bench Power Supply
from wikiHow – The How to Manual That You Can Edit
If you’ve built a bench power supply using an old ATX computer power supply, you may feel limited by the choice of voltages + 3.3V, + 5V, and +/- 12V DC. Suppose you’re breadboarding a circuit that’s meant to be run off a 9V battery? This is how to build an add-on variable-voltage “module” for your power supply.
Steps
- Gather the materials required and construct the circuit from the circuit diagram. It would be a good idea to get the datasheet for the regulator from the manufacturers website.
- Get some banana leads and connect the +12V and -12V outputs from your modded ATX supply and connect it to the input of your variable module. Use a multimeter to measure the output voltage.
- Once you have built the circuit test it carefully and measure the output voltage. You should be able to vary the voltage from about 1.5V up to 22V by turning the variable resistor. If you are using the LM317 the output current will be restricted to 1.5A, if using the LM338K it should be slightly higher check the datasheet for exact information.
Tips
- I used a small piece of veroboard to build this little addon. You could use matrix board or design a small PCB. It wouldn’t be difficult.
- Use sensible wire lengths if creating a permanent connection to the ATX supply.
- Make sure that the +12V binding post is well isolated from ground and from the -12V binding post.
- During use the regulator may get hot. Use a heatsink if necessary.
Warnings
- If you’ve already built an ATX Power Supply based bench/lab supply, you’ve already run the risks – this project is less dangerous. Soldering irons can burn you, hand tools can cut you; don’t drink and hack.
- Use common sense. If you find the regulator gets hot use a heatsink.
Things You’ll Need
- You will need the following materials:
- 1x LM317 or LM338K Voltage regulator (With heatsink and heatsink paste)
- 1x 100nF Capacitors (ceramic or tantalum)
- 1x 1uF Capacitors Electrolytic
- 1X 1N4001 or 1N4002 Power Diode
- 1X 120 Ohm resistor
- 1x 5k Ohm variable resistor
- Optional
- Indispensable
Related wikiHows
- How to Convert a Computer ATX Power Supply to a Lab Power Supply
- How to Create a 12 Volt DC Test Bench for Bullet Cameras Using an Old ATX Computer Power Supply
Sources and Citations
- LM317 Datasheet (PDF)
- LM338K Datasheet (PDF)
Article provided by wikiHow, a collaborative writing project to build the world’s largest, highest quality how-to manual. Please edit this article and find author credits at the original wikiHow article on How to Add Variable Voltage to Your ATX Based Bench Power Supply. All content on wikiHow can be shared under a Creative Commons license.
I’ve been waiting for Fedora Core 9 for a couple of weeks now. Three more days till release. Can’t wait to get my hands on FC9 and try it out.
I have an XPC shuttle which I loaded FC5 a few years ago. I plan to reformat the harddisk and load FC9.
New features include:
KDE4
Network Manager support for CDMA, GSM mobile broadband cards
jigdo
and a whole lot more.
Check out the full feature list at the link below
http://fedoraproject.org/wiki/Releases/9/FeatureList
I just saw this today when I fired up my yahoo messenger. So Jollibee discovers the potential of localized internet advertising. I bet we will be seeing more of such ads in the future.
Incidentally, I tried ordering Jollibee Chicken Steak a few weeks ago. It was not bad actually. I ordered the Php49 value meal and had an extra Php39 solo so I had 2 sets of these Jollibee chicken steak for about Php88. Not bad for 2 rice and 2 pcs of Jollibee chicken steak plus a drink.
Laundromats:
Laba Kita
Papa Laba
wash-amacallit
Washing Well
Labadabadoo
Labandera Ko
Plantsadora
Cinna Von
Labah U
MC HAMPER
Washing Well
Kosh Kosh Ayosh
OSH KOSH KUSKOS
Microsoap (Ginaya yung Microsoft Logo, but shaped it into a T-Shirt)
wash up wash up
WASH UP DOC
MR. LAVA-LAVA
water station:
UHAW
INOM
GULP
SUM IT
ATM (Automatic Tubig Machine)
resto/carinderia:
Bite Club
My Yummy Vice
pinoy big burger
Mang Donald’s
Cooking ng Ina Mo
Cooking ng Ina Mo Rin!
Pancit ng tagaMalaboni – resto in boni
Kik Mai Bols – Stall ng mga squid balls etc
Gweenitz – Sa Laguna
jaribee
hamburger- ANNE
pancit – ANNE
ihaw-ANNE
Caintaky Fried Chicken — Kainan in Cainta
Ken Afford
Chicago Balls
Bread Pitt – bakery
Maruya Carey
Point-point Eatery
Beery Good – beerhouse
aling maLUGAW – lugawan
GOTO Ko Pa – sa dasmarinas, cavite
PIER TOO
Cleopata’s -bakahan and manukan
Crispy per minute – Crispy Pata Eatery
Let’s Goat-Together
MacDonuts – donut shop
Miki Mao – noodle eatery
Side-saki – side street eatery
TapSi TurBi -Tapa & Sinangag, Turon at Bibingka
The Fried of Marikina – fried chicken shop
Wrap and Roll – lumpia outlet, Quad, Makati
KungFood
Ihaw1One
obeertime – beerhouse
eat bulalo – in las pinas
le-shoo fly (a turo-turo) — spoof of le souffle’
Tri Mo Shawarma Co.
pork barrel grill & restaurant
VIOLY BEE – carinderia ni aling violy
Cafe Pin.Dot
angels goto heaven – gotohan
jolliback – carinderia sa likod ng jollibee
Wok This Way – chinese resto
McBo – carinderia inside ateneo
Papa Bols – fishball stand
SM Siete Mart (sari-sari store near our house)
TANGING INAsal
lutong bahay – carenderia in UP
lutong kapitbahay – its competitor, just acroos lutong bahay
Fry Me
alBREADtos – bakery
GoldiLuz – imitation ng goldilocks
Rubenson – fruit stand along tagaytay
FREDCHICKEN – chicken roasters
Isaw-saw Mo – isawan
Joseph Strata – fastfood in strata 2000
Bicho by Gollywow – bisho bisho in mega foodcourt
Aristoback – canteen sa likod ng aristocrat
Starback – likod ng starbucks in lasalle
hopia like it
cupprichos – coffee shop sa sm fairview
motel/ktv/pub:
mahal kita inn & restaurant
Hotel Mokko – motel
Stairway to Heaven – motel
Machonurin – pub
Sabik Disco & KTV
Chicks o’Clock – Beer Garden sa may Avenida
Motel Kiskisan- Some cheap motel sa may Quiapo
Triple XXX pub house
etc:
PhD (Phone Doctor) – cellular phone sale and repair shop
Petal Attraction – flower shop
Elizabeth Tailoring
JAMES TAILORING
Leon King – video rental
The Way We Wear – boutique
ukay-ukay baguio city branch – pero nasa olongapo
Bee Cool – car aircon shop
Joy Ride Driving School
RePhil – gas station
Shuttles Best – badminton court
Joey’s Sixth Scents – perfume shop
maligamgam ktv
Fernando Pe’s Box Office Hits – video rental
Maid To Order – maid’s placement agency
Meating Place – meat shop
Memory Drug – mercury drug clone
Susan’s Roses – flower shop
MASTERVISION – video rental
mabuhay funeral homes
Last Trip Funeral Parlor
Shoes Ko Po! – shoe repair shop
Ben Diesel – Automotive parts store
Tinapatan -÷ tapat ng tinapayan bakery near ust
Menos SINGko para aLA SINGko – videoke bar
Brad Pets – pet shop
halliwood – lumber supplier
automobili.co – second hand car dealer sa bicutan
Rolls Roy Auto Shop
DentisaCo (siyempre last name ng dentist Co)
STAR BOX – movie house in batangas
BALLOONBALLOONAN – tindahan ng mga balloons
hack you – internet shop
paint station – tindahan ng mga pintura
bill’s gate – internet shop with the microsoft windows logo na parang gate ata ang design
Everything but the Groom – bridal registry
Sweet Dreams – funeral parlor
Seven ni Len Len – sari sari store
hair/beauty salon:
Harry Cutter
hair force one
Split Enz
Pinoy Big Barber
Felix the Cut
Paguapa-po
Curl Up And Dye
Fagoofyt
Saudia Hairlines
Sophisticut
UNATZ
Hey guys! Ilang tulog na lang, blog parteeh na!
Technorati Tag: Blogparteeh07, blogparteeh07 dalawa para sure 
The Blog Parteeh! 2007 is the largest Philippine Blogger Meet-up ever and you don’t wanna miss out on this one:
What: Blog Parteeh! 2007
When: January 27, 2006 2:00 p.m. to 8:00 p.m.
Where:
6th Floor (Poolside Area)
Classica Tower 2 Condominium
HV dela Costa St., Salcedo Village,
Makati City 1200
See map here. Landmarks: Ground floor of the building has Allied Bank and Bravo Restaurant.
Who: All Philippine-based and active bloggers.
Sponsors:
This event is sponsored by: Sheero Media Solutions, MyJournal Philippines, FeedText, Inc., Migs Paraz, A Bugged Life, The Blog Herald, b5media blog network, About My Recovery, Pinoy.Tech.Blog, Enthropia, Inc., Krispy Kreme Philippines, GMA New Media, Awesome Philippines, Codamon.com, Boracay.com.ph, Recipes.com.ph, WebMaster.com.ph, Bouncing Red Ball, Bo Sanchez, Microwarehouse Inc.
BlogParteeh07 Donors:
Marc Javellana, Bubba Gump, e-YellowPages, Adobe User Group – Philippines, Weddings @ Work, Google Philippines, Hinge Inquirer Publications
It is being blogged everyhere!
macuha, talentado, jaypeeonline , manuelviloria, baratillo, juicelog, kutitots, haravata, yugatech ,
My details:
Name: Noel Bautista
Email: noelbautista@gmail.com
Technorati Tag: Blogparteeh07, blogparteeh07
I was tagged twice and I still haven’t responded to the other one. Anyway, here’s one which came from seodance.
1. I love bowling.
Back in the late 90′s I’m into competitive bowling. One of my dreams was to get into the Philippine Team (bowling), and compete internationally. I had that dream ever since I was 12 years old, and yet to be fulfilled.
2. I’m lefthanded (but I bowl using my right hand)
I’m left handed when I write but I do other stuff such as bowling, billiards, and darts with my right hand.
3. I’m fascinated about Egypt
In fact I have a mural painting with Heiroglyphics on it. I tried learning basic heiroglyphics alphabet/sounds and converted (to the best of my abilities) 2 of my favorite songs to heiroglyphics. That song was painted on the walls of our living room.
4. Me an my wife did a past life regression before
I like to read about paranormal stuff and we did had a past life regression in the late 90′s. Unfortunately, there’s no way of verifying it.
5. I did some oil paintings before.
During grade school, I learned how to do oil painting and did a couple of paintings before. I stopped during late high school when I need to concentrate more on studies and other stuff.
I’ll try to update this blog on who to tag next.
So the aliens are now using firefox as their browser. Huh. Another one of those crop circle hoax. But it’s nice don’t you think?
Whoever made this firefox crop circle really made it to google maps.
So what’s next after this firefox crop circle? The linux penguin crop circle perhaps?
I had a privilege of being invited to a press conference of Exist yesterday together with Migz, Gail, and Abe. I just learned about Exist on that day and was impressed that it was included in the Top 100 Companies in Asia given out by Red Herring Inc.
This means Red Herring thinks Exist is a rising star. So what do they have that the other startups don’t? A passionate and visionary leader named Winston Damarillo. Just to fill in who Winston Damarillo is, he is a serial entrepreneur who built Gluecode Software (he was the CEO) and later on was bought by IBM. Starting and leading a company is really not new to him.
During the course of the event, I’ve learned that they are active in the development of world class open source software such as Geronimo, Jetspeed, and Pluto. I’m not an avid JAVA fan myself but I know for a fact that people who are active in the development of open source have great skills and passion for their craft.
If you’re into open source, you’ll probably wonder why people who have day jobs doing software development stuff, go home, eat dinner and spend a couple more hours during the night and weekends developing more software and not being paid for it. Now imagine being able to tap into the expertise of these people and have them work for your software project. Would you think you’ll end up with great software? I think so.
Exist’s expertise includes J2EE technologies, platforms, and frameworks, XML, and any cutting edge JAVA technology.
They’ve also been giving back to the academe. It was mentioned that they had talks with De La Salle University, and Ateneo about programs or electives that students can take which enables students to be aware and knowledgeable on current mainstream technologies. Winston mentioned that if they can assist the academe to develop the same skills they teach to their employees, it would be better for the students and also for them as they can tap into these students once they graduate.
So here’s my new google shirt. Got this from Aileen Apolo (Google Country Consultant for Philippines) a few days ago.
For those people who attended the SEO Beercon and got the chocolates, were you able to get your shirt already?
Update:
Some people made a comment about modeling the shirt. So here’s a new pic with Gelo.
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