Patent US4980649A successfully refreshed from Google Patents.
US4980649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra efficient switching power amplifier
Assignee: Individual
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Filing: 1989-06-08
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Granted: 1990-12-25
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Expires: 2009-06-08
Abstract
Abstract The switching power amplifier has a low number of components, short response time and extremely high efficiency. The amplifier comprises a generator circuit providing an AC signal. A diode bridge rectifies the AC signal and provides two signals substantially equal to zero or having opposite polarities. Two inductors are coupled to the amplifier output for providing the output signal. Two switches selectively apply the rectified signals to the inductors in response to the amplifier input signal. Two input capacitors, preferably having small values, are separately coupled to the rectified signals for storing DC voltages. Two or three rectifiers apply flyback voltages of the inductors to the input capacitors. An output capacitor stores the amplifier output signal.
Inventors
- 👤 Zdzislaw Gulczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:07
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
Switching power amplifier for amplifying an input signal and providing an output signal at output, comprising: a generator means for providing an AC signal; an input rectifying means for rectifying the AC signal and providing a pair of signals substantially equal the zero or having opposite polarities; a pair of inductive means coupled to the output for providing the output signal; a pair of switching means each for selectively applying one of the rectifying means signals to one of the inductive means in response to the input signal; a pair of input capacitive means separately coupled to the input rectifying means signals for storing DC voltages; an output rectifying means for applying flyback voltages of the inductive means to the input capacitive means; and an output capacitive means coupled to the output for storing the output signal.
Claim 2
Dependent Claim
137 words
Switching power amplifier for amplifying an input signal and providing an output signal at output, comprising: a generator means for providing an AC signal; an input rectifying means for rectifying the AC signal and providing a pair of signals substantially equal the zero or having opposite polarities; a pair of inductive means coupled to the output for providing the output signal; a pair of switching means each for selectively applying one of the rectifying means signals to one of the inductive means in response to the input signal; a pair of input capacitive means separately coupled to the input rectifying means signals for storing DC voltages; an output rectifying means for applying flyback voltages of the inductive means to the input capacitive means; and an output capacitive means coupled to the output for storing the output signal.
Claim 3
Dependent Claim
18 words
Switching power amplifier of claim 1 wherein the generator means includes a transformer for providing the AC signal.
Claim 4
Dependent Claim
18 words
Switching power amplifier of claim 1 wherein the switching means provide a feedback signal to the generator means.
Claim 5
Dependent Claim
14 words
Switching power amplifier of claim 1 wherein each switching means includes an unidirectional switch.
Claim 6
Dependent Claim
45 words
Switching power amplifier of claim 1 wherein the output rectifying means includes: a pair of first diode means separately coupled across the switching means for limiting reverse voltages appearing thereacross; and a second diode means for coupling one inductive means to the other inductive means.
Claim 7
Dependent Claim
64 words
Switching power amplifier of claim 1 wherein the output rectifying means includes a pair of diode means each for coupling one of the inductive to one of the capacitive means, and further wherein each inductive means is coupled to one of the capacitive means via one of the switching means and is coupled to the other capacitive means via one of the diode means.
Claim 8
Dependent Claim
26 words
Switching power amplifier of claim 6 further including a pair of second diode means separately coupled across the switching means for limiting reverse voltages appearing thereacross.
Claim 9
Dependent Claim
25 words
Switching power amplifier of claim 6 further including a pair of second diode means for coupling the capacitive means to the respective rectifying mean signals.
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) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |