Patent US4944189A successfully refreshed from Google Patents.
Patent US4672289A successfully refreshed from Google Patents.
US4672289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit configuration incorporating an A.C.-fed load connected in series with a capacitor unit
Assignee: Siemens AG
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Filing: 1986-07-24
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Granted: 1987-06-09
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Expires: 2006-07-24
Abstract
Abstract A circuit arrangement in which an a.c. load is connected in series with a capacitor unit suitable for a.c. connection. In such a circuit arrangement, the use of capacitors suitable for d.c. operation is made possible by the fact the capacitor unit is made up of two polar capacitors which are connected in series with the load in such a way that the capacitors are interconnected with matching poles, either directly or by way of the load with matching poles, as well as by the fact that a rectifier diode is connected to each capacitor, with the cathode of the rectifier diode being connected to the positive pole of the respective capacitor and the anode being connected to the negative pole of the respective capacitor.
Inventors
- 👤 Shyamal-Krishna Ghosh
- 👤 Emil Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:49
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42; H02P1/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two polar electrolytic capacitors as part of said capacitive unit, connected in series on the same side of said a.c. load with opposite direction of polarity; and a rectifier diode connected in parallel with each of said capacitors respectively and having the forward direction of each respective diode be opposite to the positive polarity of each respective capacitor.
Claim 2
Dependent Claim
76 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two polar electrolytic capacitors as part of said capacitive unit, connected in series on the same side of said a.c. load with opposite direction of polarity; and a rectifier diode connected in parallel with each of said capacitors respectively and having the forward direction of each respective diode be opposite to the positive polarity of each respective capacitor.
Claim 3
Dependent Claim
75 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two polar electrolytic capacitors as part of said capacitive unit, connected in series on opposite sides of said a.c. load with opposite direction of polarity; and a rectifier diode connected in parallel with each of said capacitors respectively and having the forward direction of each respective diode be opposite to the positive polarity of each respective capacitor.
Claim 4
Dependent Claim
75 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two polar electrolytic capacitors as part of said capacitive unit, connected in series on opposite sides of said a.c. load with opposite direction of polarity; and a rectifier diode connected in parallel with each of said capacitors respectively and having the forward direction of each respective diode be opposite to the positive polarity of each respective capacitor.
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) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |