System and method for diagnosing electrical faults
US10502773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Mar 6, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A load device coupled to an output of an ECU via a coaxial cable is disclosed. The ECU provides power to the load device, and has a power over coaxial cable (PoC) filter coupled to the output, a high side switch (HSS) coupled to the power supply and to the PoC filter via an HSS output line, a diode disposed in the HSS output line that eliminates current flow from the output towards the HSS, while allowing current flow from the HSS towards the load device, a diode resistor in parallel with the diode that allows a current to flow past the diode towards the HSS while a short-to-battery scenario is occurring, and a pull down resistor (RPD) disposed between the output line of the HSS and a ground prior to the diode configured to pull the voltage at the HSS output down to zero while an open load scenario is occurring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.