DC to DC converter for line powered modem
US4373117A · kind A · utility
54Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1980 |
| Grant date | Feb 8, 1983 |
| Priority date | — |
| Expiry date | Nov 3, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M19/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A DC to DC converter circuit for use in a telephone line powered modem and operative to convert a voltage derived from the telephone line to operating voltages required for modem operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.