KEPCO JQE 150-1.5MVPY-26956 Half Rack - Manual (Page 28)

3-4 JQE SPECIAL SVC 081111
FIGURE 3-3. COMPARISON BRIDGE (SIMPLIFIED) FOR VOLTAGE MODE
A similar bridge representing power supply operation in CURRENT LIMIT mode is shown in Fig-
ure 3-4
FIGURE 3-4. COMPARISON BRIDGE (SIMPLIFIED) FOR CURRENT MODE
VOLTAGE
ERROR
AMPLIFIER
UNREGULATED
SOURCE
REFERENCE
VOLTAGE
NULL JUNCTION
VOLTAGE
CONTROL
RESISTOR
PASS - ELEMENT
COMMON POINT
OUTPUT
VOLTAGE
= BRIDGE CURRENT
REFERENCE
RESISTOR
CURRENT FEEDBACK
RESISTOR
REFERENCE
RESISTOR
CURRENT CONTROL
VOLTAGE REFERENCE
UNREGULATED
SOURCE
OUTPUT
CURRENT
LIMIT PASS - ELEMENT
COMMON POINT
CURRENT
ERROR
AMPLIFIER
INTERNAL CURRENT
SENSING RESISTOR
NULL JUNCTION
= BRIDGE CURRENT
LOAD