Current stabilizing circuit
US5416403A · kind A · utility
3Cited by
15References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Feb 11, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/389
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit topology useable in a battery impedance tester to latch a source current to a constant magnitude includes an inductor, a comparator, a driver and a storage capacitor. The inductor is connected in series with a current path between a source and a load. The inductor produces a voltage drop that changes with current drawn by the load. Responsive to the voltage drop, the driver provides the load with current supplied from the storage capacitor. The current provided by the driver returns the source current to the constant magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.