To Construct Your Own Dummy Load - HP 54645A User's And Service Manual

Testing, Adjusting, and Troubleshooting

To construct your own dummy load

To construct your own dummy load
Obtain a connector that is compatible with the connector J3 on the
1
Low Voltage Power Supply.
Connect the following load resistors to the connector:
2
+5.1 V requires a 4-A load, 1.3
–5.25 V requires a 3-A load, 1.75
+15.75 V requires a 1.3-A load, 12.2
–15.75 V requires a 0.8 A-load, 19.7
Connect the other end of the resistors to ground pins 2, 4, 7, 8, 13, 14,
3
19, and 20.
Figure 7-9
Low Voltage Power Supply Connector
7-42
fan connector
and 20.4 W on pins 9–12.
and 15.8 W on pins 15–18.
and 20.5 W on pins 5–6.
and 13 W on pin 3.
+5.25 V
-5.25 V
adjust
adjust