Integratable bipolar level detector for high-frequency sinusoidal signals
US5140185A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1989 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Nov 15, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/1658
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The level detector comprises a first capacitance having a charge circuit including a first transistor controlled by the input signal to be detected (Vi) and a discharge circuit. A second capacitance has a charge circuit including a second transistor controlled by the input signal and a discharge circuit having at least one third transistor having pre-set electrical and geometrical characteristics. The above discharge circuits are connected to the respective inputs of a comparator whose output is representative of the difference between the maximum amplitude of the input signal and a reference level depending on said electrical and geometrical characteristics of said third transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.