MP3Car.com - View Single Post - Has anyone tried modifying a 110v atx PSU to 12v DC?

Aaron Cake · 11-08-2000, 11:11 AM

Quote:

Originally posted by Dima:
It can be done,but it would make the same noise like inverter,because of different grounds.I tried it,doesn't worth it.Save yourself a lot of problems and go to DC-DC, I recommend on Sproggy's one.

What do you mean it can be done? Doing so would require a complete redesign of the first stage of the supply (rectification, filtering, and the switching circuit). The only useable part of the circuit would be the final regulating stage. Even then I doubt that it would work. If it did, you would basically have a DC-DC converter (which is what a switching supply is anyway).

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Aaron Cake
London, Ontario, Canada

Player: Cyrix 200, 32MB RAM, 10.2Gig Quantum HD, Onboard EtherNet/Sound/Video, Custom Lexan Case, Arise DC-DC, Win95 Kernal w/Custom Player
Car: '86 Mazda RX-7 w/Basic Performance Upgrades

11-08-2000, 11:11 AM	#5
Aaron Cake Retired Admin Join Date: Jan 2000 Location: London, Ontario, Canada Posts: 2,464	Quote: Originally posted by Dima: It can be done,but it would make the same noise like inverter,because of different grounds.I tried it,doesn't worth it.Save yourself a lot of problems and go to DC-DC, I recommend on Sproggy's one. What do you mean it can be done? Doing so would require a complete redesign of the first stage of the supply (rectification, filtering, and the switching circuit). The only useable part of the circuit would be the final regulating stage. Even then I doubt that it would work. If it did, you would basically have a DC-DC converter (which is what a switching supply is anyway). ------------------ Aaron Cake London, Ontario, Canada Player: Cyrix 200, 32MB RAM, 10.2Gig Quantum HD, Onboard EtherNet/Sound/Video, Custom Lexan Case, Arise DC-DC, Win95 Kernal w/Custom Player Car: '86 Mazda RX-7 w/Basic Performance Upgrades __________________ Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight "If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."