R ranz89 New Member Sep 19, 2012 #1 Help me making a 12v, -12v, 5v, and -5v power supply for my design project
Ian Rogers User Extraordinaire Forum Supporter Most Helpful Member Sep 19, 2012 #2 You'll need to specify a current!! 1A, 0.5A.. etc.. Then someone will help you..
B ben7 Member Sep 19, 2012 #4 Use a 30v 3A center tapped transformer. (each winding is 15v) You will get roughly +15v and -15v after rectification. Use a LM7812 for +12v Use a LM7912 for -12v Use a LM7805 for +5v Use a LM7905 for -5v Max dissipation from the Vregs will be almost 30W (with a 1A load on each output (34W total load) ), so a decent heatsink will be needed.
Use a 30v 3A center tapped transformer. (each winding is 15v) You will get roughly +15v and -15v after rectification. Use a LM7812 for +12v Use a LM7912 for -12v Use a LM7805 for +5v Use a LM7905 for -5v Max dissipation from the Vregs will be almost 30W (with a 1A load on each output (34W total load) ), so a decent heatsink will be needed.