Help identifying power supply leads. (Please)

[DeekStarr]

There are several leads on this power supply that I have not seen before and was hoping that you guys could help figure them out.

Here are is the list: (left to right)

-- IN --
220v ...... 220V - not used
COM ...... White wire from 120v North American outlet.
110V ...... Black wire from 120v North American outlet.
CASE ..... ?? should this be ground from the outlet ??
P/F ........ ?? have no clue ??
N/C ........ ?? Not connected to anything ?? ( but then why bother putting it here? ??

-- OUT --
+5v ...... +V DC
+S ....... ?? No Clue
-S ........ ?? no Clue
COM ..... Common Ground
----
-5V ........... -5 DC
+12/15V .... +12 DC
COM ......... Common Ground
-12/15V .... -12 DC

[gacrwell]

-- IN --
220v ...... 220V - not used
COM ...... White wire from 120v North American outlet.
110V ...... Black wire from 120v North American outlet.
CASE ..... ground from the outlet
P/F ........ Power Fail? guessing that this is a logic output indicating that the input power is good (bad) - to give circuitry a few hundred milliseconds to power down gracefully - leave unconnected
N/C ........ Not connected to anything - because they had an extra terminal

-- OUT --
+5v ...... +V DC
+S ....... positive sense line - jumper directly to +5V
-S ........ negative sense line - jumper directly to COM
COM ..... Common Ground
----
-5V ........... -5 DC
+12/15V .... +12 DC
COM ......... Common Ground
-12/15V .... -12 DC


note that the sense line connections may very well be mandatory to get it to work correctly.

technobabble: the sense lines determine the point at which the supply will be regulated, i.e., if you want 5V at a circuit board that is connected to the supply over a cable, you connect the sense lines to the +5 and COM points -at the circuit board- the supply will 'sense' the voltage there, and regulate the supply to get +5V, at the circuit board - the actual voltage at the supply may be a few hundred millivolts higher to make up for losses in the cable and connectors. For most purposes, you don't care about those few hundred millivolts, or the losses in the cable simply aren't large enough to worry about, so you simply connect the sense lines directly at the supply.

Gary