KEPCO HSM Series - Manual (Page 19)

HSMSERIES OPR 052912
2-7
2.7.5.1 LOAD CONNECTION - METHOD I (LOCAL ERROR SENSING)
The most basic power supply/load interface is a 2-wire connection between the power supply
output terminals and the load. This connection method employs local error sensing which con-
sists of connecting the error sense leads directly to the power supply's output terminals. Its
main virtue is simplicity: since voltage regulation is maintained at the power supply output, the
regulation loop is essentially unaffected by the impedances presented by the load interconnec-
tion scheme. The main disadvantage is that it cannot compensate for losses introduced by the
interconnection scheme and, therefore, regulation degrades directly as a function of distance
and load current. The main applications for this method are for powering primarily resistive and
relatively constant loads located close to the power supply, or for loads requiring stabilized cur-
rent exclusively. The load leads should be tightly twisted to reduce pick-up. See Figure 2-3.
FIGURE 2-3. LOAD CONNECTION - METHOD I (LOCAL ERROR SENSING)