US4672290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement in which a capacitor unit is connected in series with an a.c. load
Assignee: Siemens AG
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Filing: 1986-07-03
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Granted: 1987-06-09
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Expires: 2006-07-03
Abstract
Abstract A circuit arrangement is disclosed in which a capacitive unit suitable for a.c. operation is connected in series with an a.c. load. An extension of the life of the capacitors can be achieved by having the capacitor unit consist of two capacitors connected in series either on the same side of the consumer or on opposite sides of the consumer, and that a separate rectifier diode is connected in parallel with each capacitor. Both rectifier diodes are connected with its forward direction opposite with relation to each other. This prevents reverse polarity voltage and charge, as well as reduces the duty cycle by fifty percent, thereby polarizing electrolytic capacitor life.
Inventors
- 👤 Shyamal-Krishna Ghosh
- 👤 Emil Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:46
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42; H02P1/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two capacitors as part of said capacitive unit, connected in series on the same side of said a.c. load; and a rectifier diode connected in parallel with each of said capacitors respectively and the rectifier diodes having the forward direction opposite with relation to each other.
Claim 2
Dependent Claim
64 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two capacitors as part of said capacitive unit, connected in series on the same side of said a.c. load; and a rectifier diode connected in parallel with each of said capacitors respectively and the rectifier diodes having the forward direction opposite with relation to each other.
Claim 3
Dependent Claim
63 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two capacitors as part of said capacitive unit, connected in series on opposite sides of said a.c. load; and a rectifier diode connected in parallel with each of said capacitors respectively and the rectifier diodes having the forward direction opposite with relation to each other.
Claim 4
Dependent Claim
63 words
A circuit arrangement having a capacitive unit for a.c. operation connected in series with an a.c. load comprising: two capacitors as part of said capacitive unit, connected in series on opposite sides of said a.c. load; and a rectifier diode connected in parallel with each of said capacitors respectively and the rectifier diodes having the forward direction opposite with relation to each other.
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 |