Ramp generator circuit
US8963589B1 · kind B1 · utility
3Cited by
11References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator circuit selectively charges and discharges a capacitor with currents having variable magnitudes. A trimming circuit functions to measure a half period of the oscillator signal. The measured half period is compared to a reference period to generate an error signal. The variable magnitudes of one or the other or both of the current for sourcing or sinking at the capacitor are adjusted in response to the error signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.