Driver circuit
US5917344A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/666
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driver circuit for driving a load connected between an output terminal and a reference potential, includes a first transistor having a collector connected to a first supply potential and an emitter connected to the output terminal. A second transistor has a collector connected to the output terminal and an emitter connected to the reference potential. An emitter-coupled transistor pair has bases to which a symmetrical control signal is applied, one collector which is coupled through a first resistor to the first supply potential and another collector which is coupled through a second resistor with the output terminal. A controllable current source supplies the transistor pair. A control device controls the current source in proportion to a supply voltage occurring between the first supply potential and the reference potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.