Sine wave ring generator
US4611097A · kind A · utility
8Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1984 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Jun 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M19/023
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention depicts a novel sine wave ring generator for use with a telephone circuit and an input voltage having a predetermined range, the generator comprising a switching power supply for providing a pre-determined DC output voltage from the input voltage range, an oscillator for providing a pseudo-sine wave output with a predetermined frequency, and an amplifier for amplifying the pseudo-sine wave and for receiving the predetermined DC voltage having a low output impedance thereby maintaining regulation of a circuit output voltage in a predetermined range and supplying a circuit output current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.