US3536938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Booster voltage circuit for series-connected thyristors
Assignee: ABB Norden Holding AB
•
Filing: 1967-08-14
•
Granted: 1970-10-27
•
Expires: 1987-08-14
Abstract
Abstract In order to improve the performance of series connected thyristors these are provided with an individual electrode connected to a n-layer or a p-layer nearest the anode respectively the cathode of each thyristor. A separate DC voltage source supplies this electrode with a voltage, called booster voltage, and is connected in such a circuit that the source in the case of a chain of a number of series connected thyristors serves simultaneously two adjacent thyristors in the chain.
Inventors
- 👤 Carl Ingvar Boksjo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:16
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H02; H02M; H02M1/00; H02M1/08; H02M1/088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |