B&K Precision 1762 - Manual - Manual (Page 39)

39
APPLICATIONS
Fig. 15. Typical Hook-Up Using Identical Positive
and Negative Voltages with a Separate Common.
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.