USRE29510E
Expired / Lapsed
US
⏱️ 0.0 years remaining
High efficiency switching drive for a resonate power transformer
Assignee: Tektronix Inc
•
Filing: 1976-12-10
•
Granted: 1978-01-03
•
Expires: 1996-12-10
Abstract
Abstract A high efficiency switching drive for a resonate power transformer having the ability to maintain a constant output voltage over a wide range of source voltage variation while maintaining good power conversion efficiency is provided. A transistorized class-C oscillator has means to saturate the transistors during conduction time to allow the transistor voltage to remain small as opposed to a current source as in the conventional class-C oscillator.
Inventors
- 👤 George Robert Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:41
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3382; H02M3/3385; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
A circuit for improving the efficiency of an energy conversion apparatus, comprising: a resonate transformer having primary windings and secondary windings electromagnetically coupled thereto for converting the energy; means, coupled to said primary windings, for storing energy .[.developed by said primary windings.].; first switch means coupled to said means for storing energy, said first switch means having a first condition and a second condition; means for impressing a potential of an external energy source across said primary windings and said means for storing energy in said first condition of said first switch means; and second switch means coupled to said primary windings and operatively disposed across said means for storing energy in said second condition of said first switch means for impressing energy stored in said first condition to said primary windings thereby improving efficiency of the apparatus.
Claim 2
Dependent Claim
138 words
A circuit for improving the efficiency of an energy conversion apparatus, comprising: a resonate transformer having primary windings and secondary windings electromagnetically coupled thereto for converting the energy; means, coupled to said primary windings, for storing energy .[.developed by said primary windings.].; first switch means coupled to said means for storing energy, said first switch means having a first condition and a second condition; means for impressing a potential of an external energy source across said primary windings and said means for storing energy in said first condition of said first switch means; and second switch means coupled to said primary windings and operatively disposed across said means for storing energy in said second condition of said first switch means for impressing energy stored in said first condition to said primary windings thereby improving efficiency of the apparatus.
Claim 3
Dependent Claim
27 words
The circuit according to claim 1 further comprising feedback means operatively disposed between said second windings and said first switch means for controlling said first switch means.
Claim 4
Dependent Claim
21 words
The circuit according to claim 2 wherein said feedback means determines said first and second conditions of said first switch means.
Claim 5
Dependent Claim
19 words
The circuit according to claim 1 wherein said first switch means defines a blocking oscillator containing an oscillating transistor.
Claim 6
Dependent Claim
21 words
The circuit according to claim 1 wherein said means for storing energy defines a transformer winding connected to said primary winding.
Claim 7
Dependent Claim
19 words
The circuit according to claim 1 wherein said second switch means defines an amplifier means including a switching transistor.
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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |