HP 743 Series Technical Reference Manual For Oems page 139

Power Requirements
Power Distribution
Table 6-5 Model 744 Current Requirements Worksheet
If 132 MHz, current for +5V dc is 4.7A
If 165 MHz, current for +5V dc is 6.3A
RAM cards (see Table 6-3 or Table 6-4)
Graphics subsystems
FWD SCSI GSC card x 0.7A each =
HCRX graphics board 2.0A
PMC bridge adapter 0.6A
PMC cards on bridge adapter
Totals for Model 744 board computer
1. Does not include on-board graphics, if installed.
2. On-board graphics and graphics accessory cards are each separate graphics subsystems.
3. PMC cards may also draw +3.3 current that is provided through the +5 on the bridge adapter.
The +3.3 current FOR ALL PMC CARDS ON THE BRIDGE ADAPTER AND EXPANSION
ADAPTER (do not include other expansion adapter currents) must be entered into the +5 column
after multiplying the +3.3 current by .75 to convert to the actual +5 current draw.
Table 6-6 Model 743 Current Requirements Worksheet
If 64 MHz, current for +5V dc is 6.1A
If 100 MHz, current for +5V dc is 7.5A
Graphics subsystems
FWD SCSI GSC card x 0.7A each =
HCRX graphics board 2.0A
PMC bridge adapter 0.6A
PMC cards on bridge adapter
Totals for Model 743 board computer
1. Does not include on-board graphics, if installed.
2. On-board graphics and graphics accessory cards are each separate graphics subsystems.
3. PMC cards may also draw +3.3 current that is provided through the +5 on the bridge adapter.
The +3.3 current FOR ALL PMC CARDS ON THE BRIDGE ADAPTER AND EXPANSION
ADAPTER (do not include other expansion adapter currents) must be entered into the +5 column
after multiplying the +3.3 current by .75 to convert to the actual +5 current draw.
6-10
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Each Model 744 Board Computer
2
x 0.9A each =
3
Each Model 743 Board Computer
RAM cards x 0.2A each =
2
x 0.7A each =
3
+5V dc +12V dc
Amps Amps
1
_______ 0.1A
________
________
________
+5V dc +12V dc
Amps Amps
1
0.1A
_________
_________
-12V dc
Amps
0.1A
________
________
-12V dc
Amps
0.1A
_________
_________