Low and high frequency oscillators having common voltage regulator circuit
US4136315A · kind A · utility
4Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Jul 27, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C1/36
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low frequency modulating signal and a high frequency carrier signal circuit employing a twin-T oscillator having an integrated circuit operational amplifier for producing the modulating signal and an L-C resonant feedback oscillator having a transistor amplifier for producing the carrier signal, and a monitoring shunt regulator for supplying a reference potential to the twin-T oscillator and biasing and operating potentials to the L-C resonant feedback oscillator and for deactivating the L-C resonant feedback oscillator when an increase in resistance occurs in the shunt regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.