Patent US3657632A successfully refreshed from Google Patents.
US3657632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifying device
Assignee: Panasonic Holdings Corp
•
Filing: 1970-10-22
•
Granted: 1972-04-18
•
Expires: 1990-10-22
Abstract
Abstract A rectifying device in which the high-voltage side coils of the secondary winding of an a-c voltage-generating transformer are placed opposite the a-c side rectifier elements of a stacked-type semiconductor rectifier and the low-voltage side coils thereof opposite the d-c side rectifier elements of said rectifier, thereby rendering almost uniform the reverse voltages across each of the rectifier elements by means of the distributed capacitance between the winding and the electrodes of the rectifier elements.
Inventors
- 👤 Keisuke Miyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:06
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H04N3/19; H01; H01F; H01F38/00; H01F38/42; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/10; H02M7/103; H02M7/106; H10; H10W; H10W90/00; H01F27/00; H01F27/40; H01F27/408
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A rectifying device comprising a rectifier with a plurality of series-connected semiconductor rectifier elements and a transformer for generating an a-c voltage connected with said rectifier, the high-a.c.-voltage side coils of the secondary winding of said transformer being disposed opposite the a-c side rectifier elements of said rectifier, the low-a.c.-voltage side coils of the secondary winding of said transformer being disposed opposite the d-c side rectifier elements of said rectifier, the high voltage output terminal of the secondary winding of said transformer being connected to one end of the series connection of said rectifiers, the opposite end of said series connection of rectifiers being the d-c output voltage terminal, the reverse voltages applied to each of said rectifier elements being rendered almost equal by means of distributed capacitance between said secondary winding and electrodes of said rectifier elements.
Claim 2
Dependent Claim
138 words
A rectifying device comprising a rectifier with a plurality of series-connected semiconductor rectifier elements and a transformer for generating an a-c voltage connected with said rectifier, the high-a.c.-voltage side coils of the secondary winding of said transformer being disposed opposite the a-c side rectifier elements of said rectifier, the low-a.c.-voltage side coils of the secondary winding of said transformer being disposed opposite the d-c side rectifier elements of said rectifier, the high voltage output terminal of the secondary winding of said transformer being connected to one end of the series connection of said rectifiers, the opposite end of said series connection of rectifiers being the d-c output voltage terminal, the reverse voltages applied to each of said rectifier elements being rendered almost equal by means of distributed capacitance between said secondary winding and electrodes of said rectifier elements.
Claim 3
Dependent Claim
34 words
A rectifying device according to claim 1, in which the secondary winding of said transformer for generating an a-c voltage is divided into a plurality of members between the high-a.c.-voltage and low-a.c.-voltage sides thereof.
Claim 4
Dependent Claim
36 words
A rectifying device according to claim 1, in which an insulating material with a dielectric constant higher than that of the medium between said rectifier and ground is interposed between said rectifier and the secondary winding.
Claim 5
Dependent Claim
21 words
A rectifying device according to claim 1, in which the whole rectifying device is contained in a housing filled with oil.
Claim 6
Dependent Claim
32 words
A rectifying device according to claim 1, in which said rectifier consists of a plurality of stacked-type semiconductor elements, a radiation material being disposed at each joint of said stacked-type semiconductor elements.
Claim 7
Dependent Claim
24 words
A rectifying device according to claim 1, in which said rectifier elements are slanted from the direction of the axis of said secondary winding.
Claim 8
Dependent Claim
32 words
A rectifying device according to claim 1, in which said rectifier consists of a plurality of stacked-type semiconductor elements which are installed zigzag with respect to the axis of said secondary winding.
Claim 9
Dependent Claim
38 words
A rectifying device according to claim 1, in which said rectifier consists of a plurality of stacked-type semiconductor elements which are overlapped one on another at a small portion of the ends thereof as viewed from the side.
References Cited (Backward Citations)
US3123760A
Cited
US3128421A
Cited
US3444452A
Cited
US3278826A
Cited
US3373336A
Cited
US3398351A
Cited
US3445747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |