US3828239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High dc voltage generating circuit
Assignee: Sony Corp
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Filing: 1973-01-19
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Granted: 1974-08-06
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Expires: 1993-01-19
Abstract
Abstract A high DC voltage generating circuit is provided with an impedance element connecting a switching element with the primary winding of a fly-back transformer, and a capacitive element is connected to the primary winding of the fly-back transformer to form a resonance circuit therewith, so that the fly-back transformer delivers, as its output, a sinusoidal high voltage which is subjected to a voltage doubler rectification to provide a high DC voltage with improved regulation.
Inventors
- 👤 T Nagai
- 👤 H Sahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:17
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A high DC voltage generating circuit comprising: a switching element driven by a recurrent signal, a transformer having at least primary and secondary windings, reactive impedance means through which said primary winding of the transformer is electrically connected to said switching element, a capacitive element coupled to said primary winding Of the transformer and forming, with said primary winding, a resonance circuit of a predetermined frequency for producing a substantially sinusoidal wave voltage at said secondary winding of the transformer, and rectifier means connected to said secondary winding of the transformer for rectifying said substantially sinusoidal wave voltage to produce a high DC voltage.
Claim 2
Dependent Claim
104 words
A high DC voltage generating circuit comprising: a switching element driven by a recurrent signal, a transformer having at least primary and secondary windings, reactive impedance means through which said primary winding of the transformer is electrically connected to said switching element, a capacitive element coupled to said primary winding Of the transformer and forming, with said primary winding, a resonance circuit of a predetermined frequency for producing a substantially sinusoidal wave voltage at said secondary winding of the transformer, and rectifier means connected to said secondary winding of the transformer for rectifying said substantially sinusoidal wave voltage to produce a high DC voltage.
Claim 3
Dependent Claim
112 words
A high DC voltage generating circuit comprising: a switching element driven by a recurrent signal, a transformer having at least primary and secondary windings, an impedance element through which said primary winding of the transformer is electrically connected to said switching element, said impedance element comprising a series resonance circuit, a capacitive element coupled to said primary winding of the transformer and forming, with said primary winding, a resonance circuit of a predetermined frequency for producing a substantially sinusoidal wave voltage at said secondary winding of the transformer, and rectifier means connected to said secondary winding of the transformer for rectifying said substantially sinusoidal wave voltage to produce a high DC voltage.
Claim 4
Dependent Claim
112 words
A high DC voltage generating circuit comprising: a switching element driven by a recurrent signal, a transformer having at least primary and secondary windings, an impedance element through which said primary winding of the transformer is electrically connected to said switching element, said impedance element comprising a series resonance circuit, a capacitive element coupled to said primary winding of the transformer and forming, with said primary winding, a resonance circuit of a predetermined frequency for producing a substantially sinusoidal wave voltage at said secondary winding of the transformer, and rectifier means connected to said secondary winding of the transformer for rectifying said substantially sinusoidal wave voltage to produce a high DC voltage.
Claim 5
Dependent Claim
111 words
A high DC voltage generating circuit comprising: a switching element driven by a recurrent signal, a transformer having at least primary and secondary windings, an impedance element through which said primary winding of the transformer is electrically connected to said switching element, said impedance element comprising an inductive element, a capacitive element coupled to said primary winding of the transformer and forming, with said primary winding, a resonance circuit of a predetermined frequency for producing a substantially sinusoidal wave voltage at said secondary winding of the transformer, and rectifier means connected to said secondary winding of the transformer for rectifying said substantially sinusoidal wave voltage to produce a high DC voltage.
Claim 6
Dependent Claim
111 words
A high DC voltage generating circuit comprising: a switching element driven by a recurrent signal, a transformer having at least primary and secondary windings, an impedance element through which said primary winding of the transformer is electrically connected to said switching element, said impedance element comprising an inductive element, a capacitive element coupled to said primary winding of the transformer and forming, with said primary winding, a resonance circuit of a predetermined frequency for producing a substantially sinusoidal wave voltage at said secondary winding of the transformer, and rectifier means connected to said secondary winding of the transformer for rectifying said substantially sinusoidal wave voltage to produce a high DC voltage.
Claim 7
Dependent Claim
36 words
A high DC voltage generating circuit according to claim 3, further comprising means forming an additional resonance circuit connected to said switching element for producing a pulse voltage at the output side of said switching element.
Claim 8
Dependent Claim
19 words
A high DC voltage generating circuit according to claim 4, wherein said additional resonance circuit includes said inductive element.
Claim 9
Dependent Claim
38 words
A high DC voltage generating circuit according to claim 4, wherein said inductive element is operative to isolate said resonance circuit formed by the capacitive element and said primary winding of the transformer from said additional resonance circuit.
Claim 10
Dependent Claim
20 words
A high DC voltage generating circuit according to claim 1, wherein said rectifier means comprises a voltage multiplier rectifying circuit.
Claim 11
Dependent Claim
22 words
A high DC voltage generating circuit according to claim 1, wherein a saturable reactor is connected in parallel to said resonance circuit.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |