Thread: Discussion power supply pinouts
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Old Nov 05, 2009, 01:12 AM
MDavis22 is offline
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USA, CA, Sunnyvale
Joined Nov 2008
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I got one of these power supplies (Sony APS-111) to work

I got one to work. Mine was being thrown out at my company (really).

I tried connecting each of the signal lines to ground with a 1K resistor one at a time. It only took one (19). I changed the resistor to a jumper for testing. I tested it at 50W (4 amps), the voltage fell from 12.2 to 12.1, good enough.

I accidentally connected one signal wire (19) to another apparent signal wire (21), thinking it was a ground, but it works. It appeared that there were 8 ground wires, but there were really 7. I tried jumpering to ground too, and that works also. Using 21 for the jumper ground frees up a heavier wire for power connection. Measuring the resistance to ground for pin 21, I got about 5 ohms or less.

The connector is like this with the power supply right side up:
1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24

Jumper 19 to 21 (22 for the extremely careful)
+12 is 1-4 and 13-15
Ground is 9-12 and 22-24

M
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