Intrinsically safe energy limiting circuit
US8848332B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2012 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Dec 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An intrinsically safe energy limiting circuit for connection between an upstream DC power source and a downstream electrical load powered from the upstream DC power source, wherein the circuit comprises from upstream to downstream an input to be connected to the DC power source, an electronic current limiter configured to limit a current through the circuit to a maximum value if the current reaches this value, a fuse designed to open at a current value greater than the maximum value, a DC-to-DC converter configured to convert a DC input voltage to a lower nominal DC output voltage, a zener barrier having a zener voltage higher than the DC output voltage, and an output for connection to the electrical load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.