Circuit for detecting a knee of waveform
US9958486B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2015 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Jul 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R13/0254
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit for detecting a knee of waveform is disclosed in the present invention. The circuit detects the knee and a total oscillation time of a voltage waveform as a load switch of load circuit is turned off. In the circuit, a filter filters the voltage waveform to transmit a reference voltage to a first and a second comparator. When the first and the second comparator determine that the voltage waveform achieves a sum of the reference voltage and a set voltage, the first and the second comparator transmit a first and a second signal to a knee detection module. When the knee detection module receives the first signal rather than the second signal in an oscillation time, or receives the second signal rather than the first signal in the oscillation time, the knee detection module records the knee and trigger a time recorder computes the total oscillation time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.