Input amplifier for thermally viewing device with photoresistor
US5038026A · kind A · utility
3Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement for infrared detectors, more especially for thermal viewing devices with photoresistors as detector elements is designed in order so as not to necessitate an input amplifier and an output amplifier for each detector. For this purpose the collector current of a transistor is integrated for a scan period in a capacitor and at the end of the scan period the capacitor is discharged through an electronic switch to a present potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.