3 Output 3-Com Network Switch Power Supply, Lite-On

3 Output  3-Com Network Switch Power Supply, Lite-On
Stock Number: 38392 PS
 Review Average:  
 Number of Reviews: 5
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Availibilty: In Stock   Units: 264

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Detailed Description

NOTE: We have No Accurate Information!
Pinouts is a Guess
You Are On Your Own

3 output power for a 3-COM Ss-ii Network Switch.
MFG: Lite-On
TYPE: 32292
3-COM P/N: 10013058
IEC C-14 Power Inlet
Input: 100-240VAC
Output: (Under Load)
110W max
~6in. Pigtail with 15 Pin Connector
Common: (BLACK Wire)
+3.17-3.43V @ 25A (RED Wire)
+4.95-5.25V @ 15A (ORANGE Wire)
Blue: ?? No Clue
White: ?? No Clue
DB Connector:
"A" Heavy Socket: GND (Common)
"B" Heavy Socket: +4.95-5.25V
"C" Heavy Socket: +3.17-3.43V
1: 3.17-3.43V
2: 4.95-5.24V
3: ?? No Clue
4: GND (Common)
5,6,7,8.: ?? No Clue
9: 10.8-13.2V
10: ?? NO Clue
L: 8-1/4" W: 4-3/8" O/A H: 2" WT: 1.8

California Proposition 65 Warning WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

 Product ReviewsClick here to review this item
Blue Wire
It appears the blue wire (molex pin 9 and FCI pin 5) is connected to a self-driven open collector "power good" output. If you connect 5V to it, it sinks 5mA (1k load) until the power supply is powered and then when it wakes up, the current drops to 0.5mA (10k load). The pair of BC548 transistors near the edge perform this function.
- Scott, WI
Works great for me
Both of the units I bought provide power with no additional strapping when connected to AC. The math says the outputs are 3.3 VDC ± 4%, 5.0 VDC +5%/-1% and 12.0 VDC ± 10%. The D-sub connector is an FCi D13W3S17B5GX3C and the pinout (determined by reverse engineering) is Pin A1: Ground (BLACK Wire), Pin A2: +5.0 VDC (ORANGE Wire), Pin A3: +3.3 VDC (RED Wire), Pin 1: 100Ω series resistor to +3.3 VDC, Pin 2: 100Ω series resistor to +5.0 VDC, Pin 3: Ground (BLACK Wire), Pin 4: Frame Ground, Pin 5: Some form of open collector status output (BLUE Wire), Pin 6: no connection other than to the WHITE Wire, Pin 7, 8 and 10: no connection, Pin 9: +12.0 VDC. The main output power connector appears to be an AMP Universal Mate-N-Lok II (plug housing 770023-1 with socket contacts). There are three 0.1" pitch headers with retention latches on a vertical board next to the larger heat sink. Each one has Ground and +12.0 VDC. My guess is they were for powering fans.
Good price for these units
First, be aware of 110 watt rating. That is total that can be drawn, even though listing for voltages and currents show a total wattage of over 150 w. These units were manufactured over 20 years ago, so it took a bit for the capacitors to re-form, but now work fine. DB connector pins 7,8 and 10 are not connected. Pin 3 is ground. Pin 5 is blue wire on 15 pin connector. Pin 6 is white wire on 15 pin connector. This fact will allow you to route the 12 volt output to white or blue or both by jumpering on the DB connector. I worked on these in a 40 degree shop, so they took some time to start. I assume might do better in warmer location. This is good price for units putting out high current on the 3.3 and 5 volt outputs.
Michael Larkin
Still working on it
Blue wire connects to pin 5 of DB, white wire connects to 6 of DB. They appear to go nowhere else. Pins 7, 8 and 10 appear not connected. Still won't start with or without a load. Only other connector is PL2 which makes only two connections despite having 6 pins. Jumpering any of them to the other makes no difference. 3Com was absorbed by HP in 2009 and this board appears to be manuactured in 2000.
Michael Larkin
No output when ac connected
There must be some connection that needs to be made on the DB connector. Tried jumpering the other and it did nothing. Will try jumpering pins on DB and see what happens.