Can you mod a computer power supply ? - Page 3

ir · 8th August 2004, 08:47 PM

right, now that my forums are back up, here be a link

a friend of mine built an LM4766 amp completely inside and powered by a standard PC power supply

the amp runs at +/-28V. obtaining this is fairly easy, you simply remove the 5V regulator which provies feedback to teh switching controller. Once you do this, the controller has no reference to verify that it's producing the correct voltages. As a result, it ups the switching frequency and therefore the voltage

http://oc4free.scalded.net/forum/vie...t=power+supply

again tho, you will need an osciliscope. and this project is NOT for beginners - the potential for catastrophic failure of the SMPS is very high if you don't know what you're doing - also worth a note, some parts are running at 320V DC so watch what you mess with

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8th August 2004, 08:47 PM	#21
ir diyAudio Member Join Date: Aug 2003 Location: WGTN, NZ	right, now that my forums are back up, here be a link a friend of mine built an LM4766 amp completely inside and powered by a standard PC power supply the amp runs at +/-28V. obtaining this is fairly easy, you simply remove the 5V regulator which provies feedback to teh switching controller. Once you do this, the controller has no reference to verify that it's producing the correct voltages. As a result, it ups the switching frequency and therefore the voltage http://oc4free.scalded.net/forum/vie...t=power+supply again tho, you will need an osciliscope. and this project is NOT for beginners - the potential for catastrophic failure of the SMPS is very high if you don't know what you're doing - also worth a note, some parts are running at 320V DC so watch what you mess with

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