Circuit for detecting reduction in power
US4390871A · kind A · utility
2Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1981 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Apr 29, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/1213
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.