US4442483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant circuit inverter
Assignee: Siemens AG
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Filing: 1982-09-21
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Granted: 1984-04-10
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Expires: 2002-09-21
Abstract
Abstract A resonant circuit inverter has an LC series resonant circuit and a switching device for connecting the resonant circuit with periodically alternating polarity to a dc voltage source, the switching device feeding a high voltage transformer. The resonant circuit inverter further includes an interstage transformer having a primary winding serving as the inductance in the LC resonant circuit and having a secondary winding connected to the primary winding of the high voltage transformer, the high voltage transformer having a secondary winding at which the load voltage is tapped.
Inventors
- 👤 Heinz Baumann
- 👤 Werner Kuhnel
- 👤 Manfred Rattner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:12
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/523; H02M7/5233; H02M7/5236
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A resonant inverter circuit comprising: an LC series resonant circuit; a switch means for connecting said resonant circuit with periodically alternating polarity to a dc voltage source; a high voltage transformer having a primary winding and a secondary winding; and an interstage transformer interconnected between said resonant circuit and said high voltage transformer, said interstage transformer having a primary winding in said resonant circuit and a secondary winding connected to the primary winding of said high voltage transformer such that the primary voltage of said interstage transformer is twice stepped up, first to an intermediate voltage which is the primary voltage for said high voltage transformer and subsequently to the secondary voltage of said high voltage transformer at said secondary winding thereof, a load voltage being tapped at, said high voltage transformer secondary winding.
Claim 2
Dependent Claim
134 words
A resonant inverter circuit comprising: an LC series resonant circuit; a switch means for connecting said resonant circuit with periodically alternating polarity to a dc voltage source; a high voltage transformer having a primary winding and a secondary winding; and an interstage transformer interconnected between said resonant circuit and said high voltage transformer, said interstage transformer having a primary winding in said resonant circuit and a secondary winding connected to the primary winding of said high voltage transformer such that the primary voltage of said interstage transformer is twice stepped up, first to an intermediate voltage which is the primary voltage for said high voltage transformer and subsequently to the secondary voltage of said high voltage transformer at said secondary winding thereof, a load voltage being tapped at, said high voltage transformer secondary winding.
References Cited (Backward Citations)
GB1108171A
Cited
US3842339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |