Voltage to frequency converter
Abstract
Abstract A VOLTAGE CONTROLLED, VARIABLE FREQUENCY RELAXATION OSCILLATOR INCLUDES A PAIR OF METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTORS (MOSFET''S) FEEDING VARIABLE CURRENTS TO TRANSISTORS COMPRISING THE OSCILLATOR. THE GATE ELECTRODES OF THE MOSFET''S ARE CONNECTED IN PARALLEL WITH A FREQUENCY CONTROLLING SIGNAL SOURCE TO PROVIDE A HIGH IMPEDANCE TO THE SOURCE. TO COMPENSATE FOR THE TENDENCY OF THE MOSFET''S TO PRODUCE A NONLINEAR OSCILLATOR OUTPUT FRE- QUENCY AS A FUNCTION OF SOURCE SIGNAL LEVEL, SPECIAL CIRCUITRY IS PROVIDED. TO MAINTAIN THE OSCILLATOR RESPONSE CONSTANT AS A FUNCTION OF TEMPERATURE AND COMPENSATE FOR VARIATIONS IN THE CHARACTERISTICS OF THE MOSFET''S AS A FUNCTION OF TEMPERATURE, A REGULATOR CIRCUIT INCLUDING A MOSFET AS A VOLTAGE REFERENCE SOURCE IS PROVIDED.
Inventors
- 👤 Donald C Lokerson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |