Switched current source for sourcing current to and sinking current from an output node
US4429270A · kind A · utility
13Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/22
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A gated current source includes a first current source for generating a first current which is supplied to the anode of a diode. A second switched current source is also coupled to the anode of the diode and produces a second current which is greater than the first current. When the switched current source is off, a current is supplied to an output node via the diode. When the switched current source is on, a different current is pulled from the the output node via a transistor having a base coupled to the output node and an emitter coupled to the anode of the diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.