+FarmerPotato Posted September 27, 2022 Share Posted September 27, 2022 My TM990/518A power supply came with this jack. I need to adapt it to the Speech Education Module. I don’t what this plug is… and I don’t particularly want to open up the case. Is it TI original? From the Pat Pend: https://patents.google.com/patent/US2980881A/en The SEM has jumbo “Molex” type jack, 4 pin, 0.25” spacing. The outer two are keyed half round/square. They carry 12,-12,GND,+5. Have not located this yet either. I guess I could adapt a new supply if I could be sure the -12V rail was adequate. The USB regulates this to -5V. I might be happy to make a little PCB adapter with ATX20 jack. (PICOPSU.) Next to the TMS5220, You can see the VM61002, which is the “Industrial” vocabulary demo phrase ROM. 2 Quote Link to comment Share on other sites More sharing options...
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