B&K 1651A 用户手册

 

34

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.