BK Precision 1651A, Instruction Manual

Page: 38 / 88

34
APPLICATIONS_______________________________________________________________________________________
Two Differing Negative Voltages With a Positive
Common (Refer To Fig. 14)
Using both supplies, two differing negative voltages with a
common positive are obtained as follows:
1. Select the
INDEP
endent operating mode and set the A/B
Metering switch to monitor the “A” supply.
2. Set the desired voltage and maximum current for the “A”
supply using the “A” VOLTAGE and CURRENT
controls.
3. Set the A/B Metering switch to monitor the “B” supply.
4. Set the desired voltage and maximum current for the “B”
supply using the “B” VOLTAGE and CURRENT
controls.
5. Connect the ground wires between each supplies’
positive terminal and GND (green) terminal.
6. Turn off the power supply and the equipment to be
powered during hook-up.
7. Connect the negative polarity inputs of the circuit to be
powered to the negative (black) terminals of the supplies.
8. Connect the common positive input of the circuit to be
powered to either supplies’ positive (red) or the GND
(green) terminal.
Fig. 14. Typical Hook-Up Using Two Different
Negative Voltages and a Common Positive.