US4947308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High power switching power supply
Assignee: Individual
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Filing: 1989-04-17
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Granted: 1990-08-07
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Expires: 2009-04-17
Abstract
Abstract The switching power supply has a high output power and high efficiency. This is accomplished by successively applying voltages of opposite polarities across primary of a power transformer, wherein only two transistors are used. The input voltage may be AC or DC. The switching power supply comprises a capacitor coupled to ground for storing a DC voltage having an opposite polarity to the input voltage. A pair of switches successively applies the input voltage and DC voltage to a node. A transformer has a first winding coupled to the node and ground, a second winding coupled to ground for providing a charging signal and a third winding for providing the output signal. A diode applies the charging signal to the capacitor.
Inventors
- 👤 Zdzislaw Gulczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:43
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/337; H02M3/33569; H02M3/33571
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
Switching power supply converting input voltage into output signal, comprising: a node; a capacitive means coupled to ground for storing a DC voltage having an opposite polarity to the input voltage; a switching means for successively applying the input voltage and DC voltage to the node; a transformer means having a first winding coupled to the node and ground, a second winding coupled to ground for providing a charging signal and a third winding for providing the output signal; and a rectifying means for applying the charging signal to the capacitive means.
Claim 2
Dependent Claim
92 words
Switching power supply converting input voltage into output signal, comprising: a node; a capacitive means coupled to ground for storing a DC voltage having an opposite polarity to the input voltage; a switching means for successively applying the input voltage and DC voltage to the node; a transformer means having a first winding coupled to the node and ground, a second winding coupled to ground for providing a charging signal and a third winding for providing the output signal; and a rectifying means for applying the charging signal to the capacitive means.
Claim 3
Dependent Claim
30 words
Switching power supply of claim 1 wherein the switching means includes a pair of switches coupled to the node and further separately coupled to the input voltage and DC voltage.
Claim 4
Dependent Claim
18 words
Switching power supply of claim 2 wherein each switch includes a transistor and diode coupled in parallel therewith.
Claim 5
Dependent Claim
27 words
Switching power supply of claim 1 further including a diode means coupled to the third winding for rectifying a signal appearing thereat and providing the output signal.
Claim 6
Dependent Claim
17 words
Switching power supply of claim 4 further including an output capacitive means for storing the output signal.
Claim 7
Dependent Claim
23 words
Switching power supply of claim 1 further including a diode means coupled in series with the input signal for rectifying the input signal.
Claim 8
Dependent Claim
24 words
Switching power supply of claim 1 further including an input capacitive means coupled to the input signal and ground for storing the input signal.
Claim 9
Dependent Claim
27 words
Switching power supply of claim 1 further including an inductive means coupled in series with the rectifying means for reducing a peak value of the charging signal.
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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |