| 摘要 |
When the input power from a resistive source to a DC-DC converter decreases, the pulse width of the switching transistor increases for a given load. When the pulse width increases above a threshold (14), a Schmidt Trigger (36) will operate to generate a plurality of control signals (42,44,46). The threshold is set by a plurality of resistors (28,30,32,34). In response to the control signals (42,46,48), telecommunications traffic through a remote carrier terminal will be adjusted.
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