Voltage controlled variable current reference
US5793248A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Jul 31, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A current source providing a voltage-controlled variable-current reference is described which employs a conventional current mirror to supply a current to a diode-connected transistor, and to a plurality of controllable current paths, wherein the controllable current paths are controlled by voltages from a voltage sensing circuit so that predetermined amounts of current are drawn away from the diode-connected transistor as function of a controlled voltage, so that the diode-connected transistor generates a voltage as a function of the current flowing through it which voltage is used to control an output transistor and a current flowing through the output transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.