Classic systems' voltage, current and power ratings

SystemVoltageCurrentPower
APF M1000 7.5 VAC 0.8 A
APF MP1000 7.5 VAC 0.8 A
Arcadia 2001 12 VDC 0.6 A
Atari 1010 9 VAC 0.5 A
Atari 2600 9 VDC 0.1 A
Atari 400
Atari 5200 (2-port) 11.5 VDC 1.95 A
Atari 5200 (4-port) 9.3 VDC 1.95 A
Atari 7800 9 VDC 1 A
Atari 800 9 VAC 18.5 W
Atari 850 9 VAC 20 W
Atari Touch Me (model #BE-200)
Atari Video Pinball 9 VDC 0.5 A
Bally Astrocade Blk-Red/Grn-Wht 10.8 VAC 0.085 A
Bally Astrocade Red-Grn 7.5 VAC 1.0 A
Colecovision: pin 1 +5 VDC 0.9 A
Colecovision: pin 2 -5 VDC 0.1 A
Colecovision: pin 3 +12 VDC 0.3 A
Colecovision: pin 4 ground ground
Intellivision
Intellivision II 16.7 VAC 1 A
Intellivision III
Intellivision Computer Adaptor 10 VAC 1 A
Odyssey 9 VDC
Odyssey2 11.5 VAC 0.4 A