Patent US2425587A successfully refreshed from Google Patents.
US5225767A
Expired / Lapsed
US
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Synchronous switching power supply with boost and/or flyback converters
Assignee: Individual
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Filing: 1989-06-08
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Granted: 1993-07-06
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Expires: 2009-06-08
Abstract
Abstract The synchronous switching power supply can be employed in power supply systems requiring multiple outputs and extremely high efficiency. No minimum load is necessary. A switching power supply with boost and/or flyback converters comprises a switching circuit for providing an AC signal. Two diodes rectify the AC signal and provide a pulsating DC signal to a node. An inductor is coupled thereto for attaining a current. A capacitor is coupled to the inductor for providing a first DC output signal which is also fed back to the switching circuit. The boost and flyback converters are coupled to the node for converting the pulsating DC signal into a second and third DC output signals.
Inventors
- 👤 Zdzislaw Gulczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:49
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/21; H02M7/217; H02M7/23; H02M1/00; H02M1/0083; H02M1/009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
Switching power supply for providing a plurality of DC output signals, comprising: a node; a rectifying means for rectifying an AC input signal and providing a pulsating DC signal to the node; an inductive means coupled to the node for attaining a current; a capacitive means coupled to the inductive means for providing a first DC output signal; and a boost converter means coupled to the node for converting the pulsating DC signal into a second DC output signal.
Claim 2
Dependent Claim
79 words
Switching power supply for providing a plurality of DC output signals, comprising: a node; a rectifying means for rectifying an AC input signal and providing a pulsating DC signal to the node; an inductive means coupled to the node for attaining a current; a capacitive means coupled to the inductive means for providing a first DC output signal; and a boost converter means coupled to the node for converting the pulsating DC signal into a second DC output signal.
Claim 3
Dependent Claim
28 words
Switching power supply of claim 1 further including a flyback converter means coupled to the node for converting the pulsating DC signal into a third DC output signal.
Claim 4
Dependent Claim
37 words
Switching power supply of claim 1 further including: a switching power supply means for providing at the AC input signal; and a feedback means for applying the first DC output signal to the switching power supply means.
Claim 5
Dependent Claim
78 words
Switching power supply for providing plurality of DC output signals, comprising: a node; a rectifying means for rectifying an AC input signal and providing a pulsating DC signal to the node; an inductive means coupled to the node for attaining a current; a capacitive means coupled to the inductive means for providing a first DC output signal; and a flyback converter means coupled of the node for converting the pulsating DC signal into a second DC output signal.
Claim 6
Dependent Claim
78 words
Switching power supply for providing plurality of DC output signals, comprising: a node; a rectifying means for rectifying an AC input signal and providing a pulsating DC signal to the node; an inductive means coupled to the node for attaining a current; a capacitive means coupled to the inductive means for providing a first DC output signal; and a flyback converter means coupled of the node for converting the pulsating DC signal into a second DC output signal.
Claim 7
Dependent Claim
28 words
Switching power supply of claim 4 further including a boost converter means coupled of the node for converting the pulsating DC signal into a third DC output signal.
Claim 8
Dependent Claim
36 words
Switching power supply of claim 4 further including: a switching power supply means of providing the AC input signal; and a feedback means for applying the first DC output signal to the switching power supply means.
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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |