Technical Reference Note (APC08)

MODEL: APC08 SERIES

SHEET 19 OF 23

OCTOBER 4, 2004 - REVISION 03

Young’s Stability Curves

PHASE MARGIN

100

1 .10

3

1 .10

4

1 .10

5

1 .10

6

1 .10

4

1 .10

3

0.01

0.1

1

10

100

1 .10

3

1 .10

4

1 .10

5

1 .10

6

150

100

50

0

50

Frequency

________0°

_______90°

Figure 44. YSC - Phase Margin response to determine system stability at other load conditions.