Circuit for detecting reduction in power

Details Circuit for detecting reduction in power Circuit for detecting reduction in power

1981-04-29

1983-06-28

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

361 92, 363 17, G08B 2100

Patent

active

043908713

ABSTRACT:
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.

REFERENCES:
patent: 4317223 (1982-02-01), Farmer, Jr.
patent: 4326245 (1982-04-01), Saleh

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