I have a number of TI power supplies
Texas Instruments Power Supply - Model AC 9131
IP 120va 60hz 6 watts OP 3.3vac 500ma
Texas Instruments Power Supply - Model AC 9132
IP 120va 60hz 6 watts OP 5.7vac 240ma
Texas Instrument Power Supply Model AC 9180
IP 120vac 50/60hz 5w OP 9.5vdc 50ma
Which is the correct Power Supply for the TI 99/4A
What TI machines are the others for?