Current conveyor with virtual input reference potential
Abstract
Abstract A basic circuit comprising a first transistor having an input terminal for introduction of a current, an output connected to a diode-connected second transistor, and a control electrode connected to the control electrode of a diode-connected third transistor whose output is adapted for connection to a reference potential source and whose input is connected to the output of a fourth transistor, with the control electrodes of the second and fourth transistors interconnected and the output of the second and the input of the fourth transistors connected via equal resistors to a power supply source such that the current flowing in the first and second transistors is equally reproduced in the third and fourth transistors and a fifth transistor connected to extract a current equal to or related to these currents and to feed it to an output terminal.
Inventors
- 👤 Kenneth C Smith
- 👤 Adel S Sedra
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |