Driver circuit
US6850546B2 · kind B2 · utility
2Cited by
19References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A driver circuit has a laser diode coupled in series between a supply voltage and a driving transistor collector electrode. The diode and transistor respectively have low input and high output impedances. Resonances are caused by the impedance mismatch and reactive components of the diode and transistor impedances. Feedback between the laser diode input and the transistor control electrode minimizes the effects of the resonances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.