I need some help. I have a 1/2 wave rectifier feeding a LM317T voltage regulator. The input to the rectifier is 120VAC so I'm getting about 54 volt on the other side of the diode. I have this voltage feeding the Vin of the LM317T. According to my calculation if I have a 2200 ohm resistor from the adjustment terminal to ground and 200 ohms from adjustment to Vout I should get about 15volts on Vout. I'm getting 34volts. I also have a .1uf cap from Vin to ground. Any idea on what i'm doing wrong?