Hello all,
I am using a pc SMPS for making a lab power supply and plan to add a variable output on one of the 12v lines with an lm317 chip. So I also have a plan to integrate a ICL7107 based voltmeter on the variable line, but I would like to know If I can power the chip from the (-5)-0-(+5) lines of the smps and the same time monitor the 12v line will have the variable regulator. I already have a built voltmeter, just want to know if this would work as ICL7107 needs a different line to power it other than the one it is tested on. I am putting this possibilty in case the smps has separate transformer windings for 12 and 5 rather than regulating the 12v line to 5v.
Thanks
I am using a pc SMPS for making a lab power supply and plan to add a variable output on one of the 12v lines with an lm317 chip. So I also have a plan to integrate a ICL7107 based voltmeter on the variable line, but I would like to know If I can power the chip from the (-5)-0-(+5) lines of the smps and the same time monitor the 12v line will have the variable regulator. I already have a built voltmeter, just want to know if this would work as ICL7107 needs a different line to power it other than the one it is tested on. I am putting this possibilty in case the smps has separate transformer windings for 12 and 5 rather than regulating the 12v line to 5v.
Thanks