B&K 1651A, 1652 instruction manual

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 INDEPendent 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.

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Fig. 14. Typical Hook-Up Using Two Different Negative Voltages and a Common Positive.