Rapid starting variable frequency oscillator with minimum startup perturbations
US4533881A · kind A · utility
8Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1982 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Sep 3, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2201/0208
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An LC-type oscillator employing a differential amplifier to switch a tank circuit in response to a feedback signal. A voltage controlled variable capacitor is employed to control the frequency of oscillation. The bias across the variable capacitor is closely controlled to avoid errors in the frequency of oscillation during the period of startup, which would otherwise create an undesired error in the oscillation frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.