Radiation-controlled filter with photoconductor means and feedback thereto
US5162646A · kind A · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Jun 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments disclose an adjustable filter (cf voltage-controlled bandwidth) having photoconductors whose resistance is adjusted by variable-intensity radiation source means, with a related feedback loop to compensate for thermal changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.