author
24CommentsJoined August 20th, 2008

Tell us about yourself!

Complete Your Profile
  • How to build a 24V Power Supply from 2 ATX PSU

    Excellent! Now you can add supply number 3 and go for the whole 36volts .... or not. You should continue to collect a spare ATX as they come your way though. They don't live forever.J

    View Instructable »
  • How to build a 24V Power Supply from 2 ATX PSU

    How are you switching the mains side? If you wire the mains to one switch so both supplies get power at the same time should help. Are the ATX boxes identical? If not try reversing boxes A and B. Finally you could get a double pole switch so the green - black link is switched for both boxes at once. DON'T MIX your blacks, the one from A is a real zero volts, but the black from B is at +12V from the A supply yellow. A double poe switch has two isolated electrical switches under one mechanical button.J

    View Instructable »
  • How to build a 24V Power Supply from 2 ATX PSU

    Hi Fadi, Your 2 power supplies can be seen as a pair of 12 volt batteries when the DC ground is isolated. If one battery is a large car battery and the other one is a smaller motorcyclel battery you can only draw the amount of energy out that the smaller battery can provide. Even if you have 2 similar car batteries, one might be older or weaker than the other. The weaker battery will provide as much power as it can and no more. The extra capacity of the bigger battery (or PSU) counts for nothing when they are connected in series. Don't forget your power supply provides the power and the load takes what it needs - the power supply can never push extra power into a load and damage it. Please take care with the high voltage side of these power supples.Electricity only kills you on...

    see more »

    Hi Fadi, Your 2 power supplies can be seen as a pair of 12 volt batteries when the DC ground is isolated. If one battery is a large car battery and the other one is a smaller motorcyclel battery you can only draw the amount of energy out that the smaller battery can provide. Even if you have 2 similar car batteries, one might be older or weaker than the other. The weaker battery will provide as much power as it can and no more. The extra capacity of the bigger battery (or PSU) counts for nothing when they are connected in series. Don't forget your power supply provides the power and the load takes what it needs - the power supply can never push extra power into a load and damage it. Please take care with the high voltage side of these power supples.Electricity only kills you once. J

    View Instructable »