Integrated current source feedback and current limiting element
US6381114B1 · kind B1 · utility
9Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Mar 31, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for supplying power to an intrinsically safe circuit having a power supply and output terminals includes an integrated current source feedback and current limiting element. Voltage limiting circuitry between the power supply and the output terminals limits the voltage across a load. Current limiting circuitry includes barrier resistors which convert current to voltage for input to an operational amplifier comparing a reference voltage with the voltage level representing the load current and providing a control input signal to a transistor for limiting a current applied to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.