Specifications

OPERATING CHARACTERISTICS AND CONFIGURATIONS
These sections contain information on operating characteristics and how to configure the PD Series.
All power supplies operate in either constant voltage (CV) or constant current (CC) mode over the rated
output. Their respective voltage and current operating locus are found in operating quadrants for all models.
The power supply acts as a constant voltage source for comparatively large values of load resistance and as a
constant current source for comparatively small values of load resistance. The automatic crossover or
transition between these two modes of operations occurs at a critical stage or "crossover" value of load
resistance; R
c
= E
s
/I
s
, where E
s
is the front panel voltage setting and I
s
the front panel current setting.
The wake-up area (| 50mA) is the minimum current (factory) setting to excite any output voltage setting
within the power supply range.
OPERATING QUADRANT
Current
max
Voltage
max
Crossover
Wake-up Area (
#
50mA)
1-11