Voltage-to-frequency converters
US4507624A · kind A · utility
1Cited by
1References
2Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 10, 1983 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Jan 10, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/60
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A monostable circuit of a voltage-to-frequency converter supplies feedback pulses to balance the input signal to a first integrator. These same pulses are supplied to a second integrator where they are compared with reference pulses from a crystal-controlled clock. Any drift in the pulse-width of the feedback pulses is corrected by a control signal applied to the monostable circuit by the second integrator to vary its quasi-stable period appropriately. Thus the precision of the converter is improved without disturbing its asynchronous properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.