Power supply monitor
US7519484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2005 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jan 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/2513
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a power supply monitor circuit comprising a positive supply monitoring input, a negative supply monitoring input, and a voltage divider connected between the positive and negative supply monitoring inputs and having an intermediate node providing a potential intermediate those on the positive and negative supply monitoring inputs. A sampling circuit is connected to sample the potential at each of the positive supply input the negative supply input and the intermediate node. Also provided is a method of monitoring noise on a power supply whereby phase information from those samples is derived about the noise signals at the two said points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.