US5331532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage regulating circuit
Assignee: Sony Corp
•
Filing: 1992-05-27
•
Granted: 1994-07-19
•
Expires: 2012-05-27
Abstract
Abstract A coil (11) is connected in series to a primary winding (1a) of a flyback transformer (1). A series circuit of a capacitor (15) and a switching circuit (12) is connected in parallel to the coil (11). By turning on and off the switching circuit (12), the connection of the capacitor (15) to the coil (11) is switched, to thereby connect or disconnect the coil (11) in an AC fashion. Therefore, it is possible to realize a high voltage regulating circuit which can be made inexpensive.
Inventors
- 👤 Kenji Iwai
- 👤 Seiji Kawaberi
- 👤 Akihiro Ueyama
- 👤 Junzo Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:06
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H04N3/185; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33569; H02M3/01; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A high voltage regulating circuit comprising: a flyback transformer circuit for generating a high voltage at its secondary winding that corresponds to a voltage input to its primary winding; an inductance connected to said primary winding of said flyback transformer circuit in series; a series circuit formed of a capacitor and a switching element and connected in parallel to said inductance; and a detecting circuit for detecting said high voltage from said secondary winding, said switching element being switched by an output from said detecting circuit.
Claim 2
Dependent Claim
86 words
A high voltage regulating circuit comprising: a flyback transformer circuit for generating a high voltage at its secondary winding that corresponds to a voltage input to its primary winding; an inductance connected to said primary winding of said flyback transformer circuit in series; a series circuit formed of a capacitor and a switching element and connected in parallel to said inductance; and a detecting circuit for detecting said high voltage from said secondary winding, said switching element being switched by an output from said detecting circuit.
Claim 3
Dependent Claim
43 words
The high voltage regulating circuit according to claim 1, further comprising a diode in series with said secondary winding for rectifying the high voltage from said secondary winding and a capacitor in series with said diode for smoothing an output from said diode.
Claim 4
Dependent Claim
49 words
The high voltage regulating circuit according to claim 1, further comprising a switching circuit and a pulse generating circuit, an output from said switching circuit being supplied to said primary winding of said flyback transformer circuit, said switching circuit being responsive to an output from said pulse generating circuit.
Claim 5
Dependent Claim
33 words
The high voltage regulating circuit as claimed in claim 1, in which said flyback transformer circuit includes a plurality of primary windings, one of said plurality of primary windings serving as said inductance.
Claim 6
Dependent Claim
26 words
The high voltage regulating circuit as claimed in claim 4, in which said flyback transformer circuit comprises a plurality of tertiary windings and a differentiating circuit.
Claim 7
Dependent Claim
31 words
The high voltage regulating circuit as claimed in claim 5, in which one of said tertiary windings is used as a pulse winding whose output is supplied to said switching element.
Claim 8
Dependent Claim
28 words
The high voltage regulating circuit as claimed in claim 5, in which said secondary winding is formed of a plurality of stages of a coil and a diode.
Claim 9
Dependent Claim
52 words
The high voltage regulating circuit as claimed in claim 6, in which said detecting circuit is formed of a resistor for dividing the high voltage together with a high voltage resistor and a high voltage capacitor, an integrating circuit comprised of capacitors, a resistor and an operational amplifier, and said pulse winding.
Claim 10
Dependent Claim
22 words
The high voltage regulating circuit as claimed in claim 8, in which said detecting circuit further comprising a resistor and a capacitor.
References Cited (Backward Citations)
US4546388A
Cited
US4728868A
Cited
US4704674A
Cited
US4891707A
Cited
US4939429A
Cited
US5126930A
Cited
US5184289A
Cited
US5276604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |