Instrument for measuring conductance or capacitance of an electrical load during operation
Abstract
Abstract INSTRUMENTATION FOR MEASURING ELECTRICAL CHARACTERISTICS OF A LOAD DURING APPLICATION OF STORED ELECTRICAL ENERGY TO THE LOAD. THE CURRENT TO THE LOAD IS ACCURATELY MONITORED OVER A WIDE DYNAMIC RANGE. AN INSTRUMENT INCLUDING A CURRENT SOURCE FOR CHARGING A CAPACITANCE, A SWITCH FOR DISCHARGING THE CAPACITANCE THROUGH A DIODE INTO THE LOAD, AND AN RC CIRCUIT FOR DEVELOPING AN OUTPUT SIGNAL WHICH IS THE DERIVATIVE OF THE VOLTAGE ACROSS THE DIODE, WITH THIS OUTPUT SIGNAL BEING DIRECTLY PROPORTIONAL TO THE CONDUCTANCE OF THE LOAD AT ANY TIME DURING THE DISCHARGE OF THE CAPACITANCE. A SIMILAR INSTRUMENT FOR MEASUREMENT OF CAPACITANCE OF A LOAD. THE INSTRUMENTS ARE SUITABLE FOR THE MEASUREMENT OF CONDUCTANCE AND CAPACITANCE OF AN ELECTRIC EMULSION TREATER DURING OPERATION OF THE TREATER.
Inventors
- 👤 Homer M Wilson
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |