Current mirror circuit
US4897614A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/265
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A current mirror circuit comprises first, second and third transistors of same conductivity type. The emitter electrodes of the first and second transistors are connected to the power source terminal, and the base electrodes thereof are connected in common. An input current is supplied to the collector electrode of the first transistor. The emitter electrode of the third transistor is connected to the common connection of the first and the second transistors, and the base electrode thereof is connected to the collector electrode of the first transistor. A resistor is connected between the base and the collector electrodes of the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.