bogdanfirst
New Member
today, someone gave me a computer suply, he told me it is not functioning. so i tooke it for components.
ill start with what i want. i dont want to repaire it, i just want to know it is posible to use the components to build another switching suply, from 12-18Vdc to adjustable 3-12V. or any other switching suply for input low voltage d.c. and output low voltage d.c. too.
the thing is that i opened it and didnt find anything to be wrong in it, anything burned, exept for a resistor wich was connected between +12V and the fan circuit(the fan has a turation control circuit with a sensor attached on a heatsik, wich you can see in the picture it is a little pcb with 2 wires-red and black-coming from the main pcb and the fan is connected to this pcb too.). the resistor seems to be the only thing to be non functioning.
there are 2 IC's DBL339 and DBL494. i didnt search for a datasheet for them, but i will. probably these ics are for controlling the sulply. there is a big transistor, LT57(SBL1640PT) and 2 other smaller ones, C3039(M5J4), plus more other low power transistors. i also see three transformers and 5 inductors. there are 2 cpacitors, 220uF/200V wich dont appear to be broken.
well in conclusion i want to ask if anyone has any circuits for the components i mentioned, or any ideea of what to do with it before i break it apart in components.
ill start with what i want. i dont want to repaire it, i just want to know it is posible to use the components to build another switching suply, from 12-18Vdc to adjustable 3-12V. or any other switching suply for input low voltage d.c. and output low voltage d.c. too.
the thing is that i opened it and didnt find anything to be wrong in it, anything burned, exept for a resistor wich was connected between +12V and the fan circuit(the fan has a turation control circuit with a sensor attached on a heatsik, wich you can see in the picture it is a little pcb with 2 wires-red and black-coming from the main pcb and the fan is connected to this pcb too.). the resistor seems to be the only thing to be non functioning.
there are 2 IC's DBL339 and DBL494. i didnt search for a datasheet for them, but i will. probably these ics are for controlling the sulply. there is a big transistor, LT57(SBL1640PT) and 2 other smaller ones, C3039(M5J4), plus more other low power transistors. i also see three transformers and 5 inductors. there are 2 cpacitors, 220uF/200V wich dont appear to be broken.
well in conclusion i want to ask if anyone has any circuits for the components i mentioned, or any ideea of what to do with it before i break it apart in components.