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The Philippine Electronics and Technology Forum > Analog and Mixed Signal > Analog Electronics (Moderator: marcelino) > ATX Power Supply 12V Power Input
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Author Topic: ATX Power Supply 12V Power Input  (Read 4799 times)
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« on: July 20, 2008, 10:58:00 AM »
May nakapag modify na ba rito ng ATX power supply na instead 220V ang input ay converted na sya for 12V?

Pa-share naman ng scematics.
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« on: July 20, 2008, 10:58:00 AM »
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« Reply #1 on: July 20, 2008, 10:58:56 AM »
bali parang battery ang input sir?
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« Reply #2 on: July 20, 2008, 10:59:20 AM »
mukhang sa kotse ata gagamitin?
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« Reply #3 on: July 20, 2008, 11:02:12 AM »
Yup battery ang input, nakalimutan ko, 12V dc pala hehehhee..

Yan para wag na gumamit ng inverter, bawas pa sa efficiency yan.
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« Reply #4 on: July 20, 2008, 11:04:57 AM »
hindi ko pa na-try pero ang mga papalitan, yung windings sa transformer, yung mga MOSFET (or BJT kung BJT ang gamit), at kung may current sensing resistor sa primary, yung sensing resistor. mostly primary lang ang papalitan (or primary lang talaga).
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« Reply #5 on: July 20, 2008, 11:11:46 AM »
yung power inverter ng cdrking pwedeng pwede i modify yun para maging switching power supply Grin
o kaya naman kung gusto nyo lm317 na lang gamitin nyo atsaka mga -voltage inverter ic para di nyo na kailngan ng winding ng mga transformer Grin
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« Reply #6 on: July 20, 2008, 11:12:36 AM »
Tagal magreply nung taga emerson dyan ah, kailangan ko inputs nyo dito.
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« Reply #7 on: July 20, 2008, 11:14:57 AM »
Quote from: nucleus on July 20, 2008, 11:11:46 AM
yung power inverter ng cdrking pwedeng pwede i modify yun para maging switching power supply Grin
o kaya naman kung gusto nyo lm317 na lang gamitin nyo atsaka mga -voltage inverter ic para di nyo na kailngan ng winding ng mga transformer Grin

Dyaske na bata ito, sinabi na nga efficiency ang habol, ngayun naman gusto gamitan ng linear na power supply. Kung trip ko gumamit ng linear na voltage regulator, bakit pa ako magtyaga sa LM317 na 1A lang ata ang kaya, ang dami ko dito LM350, 3A pa. Marami pa rin ako ata LDO na variable voltage regulator na 5A.
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« Reply #8 on: July 20, 2008, 11:17:02 AM »
Grin edi yung power inverter na lang ng cdrking imod nyo Wink
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« Reply #9 on: July 20, 2008, 11:21:06 AM »
Di ko pa nakita ang inverter ng CDR King at di ko alam kung ano use nyan sa ATX na 12Vdc na input na target ko.
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« Reply #10 on: July 20, 2008, 11:24:39 AM »
http://cdrking.com/local/products/index.php?action=mnu&temp=2&typeno=9715924-639300-825738373-1998941&prod=Power/Charger%20Devices
andyan po yung sinasabi ko Cheesy
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« Reply #11 on: July 20, 2008, 11:33:11 AM »
Quote from: nucleus on July 20, 2008, 11:24:39 AM
http://cdrking.com/local/products/index.php?action=mnu&temp=2&typeno=9715924-639300-825738373-1998941&prod=Power/Charger%20Devices
andyan po yung sinasabi ko Cheesy


Wala kwenta.
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« Reply #12 on: July 20, 2008, 11:37:19 AM »
Sad hehehe naisip ko lang po since 12V na yung input nun yung output na lang ang imodify Cheesy
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« Reply #13 on: July 20, 2008, 04:53:13 PM »
yun palang DC blocking capacitor sa bridge mahirap hanapan ng high current. though pwede namang alisin yun at umasa na mid-rail talaga yung hati ng capacitor bank.

normal topology ng mga ATX Supply (yung mga mura) - Half Bridge with 110V to 220V voltage doubler using switch.
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« Reply #14 on: July 21, 2008, 08:26:29 AM »
Quote from: rdpzycho on July 20, 2008, 11:04:57 AM
hindi ko pa na-try pero ang mga papalitan, yung windings sa transformer, yung mga MOSFET (or BJT kung BJT ang gamit), at kung may current sensing resistor sa primary, yung sensing resistor. mostly primary lang ang papalitan (or primary lang talaga).

hello, Grin

Kung di ako nagkakamali nagkaron na rin ako ng similar post regarding converting 110V -> 220V na ATX hindi ko lang masearch, Tama po si rdpzycho, bale sa tranformer number of turns at guage ng wire ang papalitan.

Take note for the same output power eh meaning mas malaki ng input current kung bumaba ang input voltage.

Naku, tingin ko problema jan eh yung current sensing resistor. PCB trace na lang gamitin nyo.hehehe
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« Reply #15 on: July 21, 2008, 09:39:09 AM »
o kaya yung tulad sa mga Digital Meter, yung solid wire. Grin
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« Reply #16 on: July 21, 2008, 04:29:55 PM »
Ganito po ba ang gusto nyo?



Smart Car PC Power Supply
- 160 watts output
- Ideal car Power supply for operating Core 2 duo, Celeron, AMD systems
- ATX, 6-24V wide input range
- Intelligent shutdown controller
- ON/OFF motherboard control
- Survives vehicle engine cranks
- Battery deep discharge prevention
- High efficiency, 160 watts output
- "Anti-Thump" Amplifier remote control - 15A automotive fuse (mini-blade)
- VIA, P4 and AMD CPU support


dito ko nakita http://www.mini-box.com/M2-ATX-160w-Intelligent-Automotive-DC-DC-Power-Supply
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« Reply #17 on: December 19, 2009, 07:31:32 PM »
wow,, yan nga siguro ang hanap... baka po may digram kau nyan. maganda yan sa car pc mp3 player.. ako kasi gumagamit pa ko ng inverter para matakbo ko yung tualatin car pc mp3 ko..
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« Reply #18 on: December 31, 2009, 04:27:43 PM »
google is your friend: http://www.dasilvas.info/ATX%20Power%20supply.htm
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« Reply #19 on: July 27, 2010, 11:24:48 PM »
Sir glenjoy gawa ka nalang sariling power supply Palitan mo yung primary side ng 12 volts. kaya mo naman yata magdesign. maurag ka man cguro kayan!!!
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