B&K 1651A Manual Do Utilizador

 

35

Identical Positive and Negative Voltages With a 
Separate Common (Refer To Fig. 15) 
 

Another typical “split supply” application is when a circuit 

uses operational amplifiers (op-amps). Typically, identical 
positive and negative voltages are required to power op-amp 
circuits. Using both supplies and the series tracking mode of 
operation, identical positive and negative voltages with a 
separate common are obtained as follows: 
 

1. Select the Tracking  Series operating mode and set A/B 

Metering switch to monitor the “A” supply. 

2. Set the desired voltage using the “A” VOLTAGE 

controls. 

3. Connect a ground wire between the “A” supply negative 

terminal and the GND (green) terminal. 

4. Turn off the power supply and the equipment to be 

powered during hook-up. 

5. Connect the positive polarity input of the circuit to be 

powered to the positive (red) terminal of the “A” supply 
and connect the negative polarity of the circuit to the 
negative terminal of the “B” supply. Connect the circuit 
ground to the ground terminal of the “A” supply, the 
positive terminal of the “B” supply, or the GND (green) 
terminal.