i am confused here.and completely novice in to electronics.
i have a schematic that has some LF353 in it and it shows that it powers them with +12v and -12v but then it uses GND as well in to some parts of the schematic. the only power relating signs that i have is
+12v -12v and GND.
my first question, is there any deference between the -12v and GND ?
and the second one is if i use an arduino, should i go and have the same GND with the 12v circuit ? i really feel that i should do but …
i attach a PDF file with the schematic
any help or sudgestion is more than welcome
Laboratory 4 - 2006.pdf (487 KB)