Frequency detection circuits
US9568520B2 · kind B2 · utility
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5References
14Claims
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Assignee
Inventors
Key dates
| Filing date | May 16, 2014 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A frequency monitoring circuit includes a monitoring lead, a D-type flip-flop, and a one-shot. The D-type flip-flop has a switchable logic state, a clear input, and a clock input. The one-shot has an input and an output connected to the D-type flip-flop clear input. The monitoring lead connects the one-shot input to the latch clock input for switching the logic state of the D-type flip-flop based on change in voltage applied to the monitoring lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.