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Computer ATX Power Supply Hacked, How To Disable Voltage & Current Protection from ATX PSU. i demonstrated TL494 / KA7500 based atx psu, it is using LM339 comparator ic. this works as ATX supervisor ic for housekeeping and monitoring all the atx function and it turns off TL494 /KA7500 in any abnormal case (over voltage, under voltage, short circuit, over current ) it will pull up pin 4 of the TL494/KA7500 that is dead-time control pin when this pin is pulled up above 2 volt, it shutdown the ATX and disables the SMPS controller option
without disable Remove short circuit protection, it prevent the atx operation by auto shutdown from under voltage, overvoltage and overcurrent conditions. so you can modify/ Disable short circuit and overload Computer ATX Power Supply into car battery charger or lab power supply for your electronics workbench or you can make it variable dc power supply. How To Disable Voltage & Current Protection from ATX PSU / computer power supply
This tutorial is part-1 to modify atx power supply to ,ake bench power supply / battery charger
using this atx power supply we can adjust voltage to 13.4v to charge 12v car battery or it can be modified as lab bench power supply
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How to Modify/ Disable short circuit and overload protection in ATX power supply
protection in ATX power supply
#electronicscreators #tutorial #electronics
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