B&K Precision 1673 - Manual - Manual (Page 11)

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5 Operating Instructions
5.1 Setting the Output Voltage and Output Current
1. As per load requirement, calculate the voltage and maximum current limit to be set
on output. Note: V=IR
2. Disconnect the load from output terminals.
3. For current limit adjustment, turn the current adjustment knob counter-clockwise
to get minimum current output.
4 Short the circuit between the positive and negative output terminals by the
accessory leads.
5. Vary the current adjustment knob clockwise until the current displays the required
current limit. The CC LED will be lit while adjusting the current limit. Remove the
accessory lead after current limit adjustment.
6. The voltage will be displayed again and the CV LED will be lit.
7. Vary the voltage adjustment knob to get the desired output voltage on the display.
Depending on load condition, the power supply will work either in CV or in CC mode. The
automatic changeover is indicated by the CV / CC LEDs.
5.2 Constant Voltage (CV) /Constant Current (CC) Mode
The working characteristic of this power supply is called a constant voltage/constant
current automatic crossover type. This permits continuous transition from constant
current to constant voltage modes in response to the load change. The intersection of
constant voltage and constant current modes is called the crossover point. Figure 4 shows
the relationship between this crossover point and the load.
Figure 4 – CC/CV Characteristic