Current-voltage transforming circuit employing limiter circuit
US7057423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2003 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A current-voltage transforming circuit used with a photo detector integrated circuit includes a photo detector to detect a photo signal (laser beam signal) to generate a photo current, an amplifier to amplify the photo current, which corresponds to the photo signal, an emitter follower to receive an output of the amplifier, an output buffer to receive an output of the emitter follower, a current detecting limiter unit having an input terminal and an output terminal and turned on to generate a limiter current when the detected current outputted from the amplifier is greater than a predetermined current, and a feedback resistor connected between the photo detector and an output terminal of the output buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.