sr1200
Well-known member
http://www.jlmaudio.com/ACDC%20Calculator.htm
if anyone has some time to school me on what I'm looking at here. In particular the C/W rating and the total VA for the transformer.
My numbers for arguments sake. 24 volt + rail @4amps, no secondary rail and the 48v at a half amp. He says that if the CW rating is over 50 you dont need a heat sink on the regulators. So if i make the power transformer AC 24-26 volt, i get a set of numbers (WELL below 50) if i put 18v AC i get HUGE numbers on CW. Now would that be because im going to heat the hell out of the transformer instead of the VRs? What should I be looking to do here? Where am I? Who am I? Why am I here? What?!
EDIT: I think my question basically relates to: DO i need a couple of volts extra hitting the VR's? If i use an 18vAC trasnformer im getting very little wasted voltage at the VR which is why my C/W is going up and more when i go higher AC on the trafo, so more waste more heat sink needed.
if anyone has some time to school me on what I'm looking at here. In particular the C/W rating and the total VA for the transformer.
My numbers for arguments sake. 24 volt + rail @4amps, no secondary rail and the 48v at a half amp. He says that if the CW rating is over 50 you dont need a heat sink on the regulators. So if i make the power transformer AC 24-26 volt, i get a set of numbers (WELL below 50) if i put 18v AC i get HUGE numbers on CW. Now would that be because im going to heat the hell out of the transformer instead of the VRs? What should I be looking to do here? Where am I? Who am I? Why am I here? What?!
EDIT: I think my question basically relates to: DO i need a couple of volts extra hitting the VR's? If i use an 18vAC trasnformer im getting very little wasted voltage at the VR which is why my C/W is going up and more when i go higher AC on the trafo, so more waste more heat sink needed.