Overvoltage protection circuit for controlled solid state valves
Abstract
Abstract The disclosure describes a high voltage electric converter wherein, in addition to a voltage sharing arrangement for a series string of controlled solid state valves, each valve has connected thereacross a circuit including in series a voltage threshold device and a capacitor with a junction therebetween. A voltage breakover device is connected between the junction and the control electrode of the valve. The arrangement is such that when the voltage across the valve exceeds a predetermined value the threshold device is overcome and the capacitor charges until it reaches the breakover voltage of the breakdown device thereby to break down the breakdown device and fire the valve. The control signal is maintained on the control electrode until the capacitor is discharged.
Inventors
- 👤 Richard J Ravas
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |