I've got 2 old PSU's which I would like to use for powering some 12v cathode tubes and lighted fans all out of a old pc.How do I get the Psu's to start up and supply the voltage(12V).As I don't think a 12v plug transformer will be up to it.If succesfull I intend to use them in a disco case
They are 2 cold cathode tubes as used by moders they run off a 12v supply.I need a diagram on how to swich the psu's on or will a plug in transformer be powerfull enough.Messed with leccy before it gives you a good belt and you learn.
Unplug the power cord from the power supply, short-out pins 14 and 15 on the power supply main power connector, and plug-in the power cord just long enough to see if the fan is working. This may not be the best thing to repeatedly do to an ATX power supply (it can damage it).
The ATX12V Power Supply Design Guide states that the power-on function should be normally done with TTL (transistor transistor logic) circuitry which pulls pin 14 low. I use a jumper cable with alligator clips at each end with partially stretched-out paper clips in each alligator clip (an old trick). Pull the power plug before removing the jumper.
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