Patent US3914653A successfully refreshed from Google Patents.
US3914653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator for deflection circuit
Assignee: RCA Licensing Corp
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Filing: 1973-05-14
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Granted: 1975-10-21
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Expires: 1993-05-14
Abstract
Abstract A controllable phase shifting network is coupled between a source of direct current and an inductance coupling direct current energy to a commutating network including a commutating switch of a retrace driven deflection circuit. The phase shifting network oscillates due to the operation of the commutating switch and modulates the direct current applied to the commutating network such that the peak voltage across the commutating switch in its open condition is reduced. Regulation against undesirable voltage variations in the deflection circuit is achieved by varying the reactance of the phase shifting network in response to voltage variations obtained from the deflection circuit.
Inventors
- 👤 Gerhard Forster
- 👤 Hans Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:40
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/83; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H04N3/185; H04N3/1856
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
A voltage regulator for a deflection circuit including a commutating switch for causing transfer of energy to a commutating network during a first portion of each deflection cycle for supplying energy to a deflection winding during a second portion of each deflection cycle, said regulator comprising: a direct current voltage source; first inductance means coupled to said commutating switch; second variable inductance means coupled to said first inductance means and to said source of direct current voltage; capacitance means coupled to said second inductance means to form a resonant circuit therewith for coupling energy from said direct current voltage source to said first inductance means; a source of undesirable voltage variations in said deflection circuit; and means coupled to said source of voltage variations and to said second variable inductance means and responsive to said voltage variations for varying the inductance of said second inductance means for changing the phase of said energy coupled to said first inductance means for maintaining substantially constant energy in said cOmmutation network from one deflection cycle to another.
Claim 2
Dependent Claim
174 words
A voltage regulator for a deflection circuit including a commutating switch for causing transfer of energy to a commutating network during a first portion of each deflection cycle for supplying energy to a deflection winding during a second portion of each deflection cycle, said regulator comprising: a direct current voltage source; first inductance means coupled to said commutating switch; second variable inductance means coupled to said first inductance means and to said source of direct current voltage; capacitance means coupled to said second inductance means to form a resonant circuit therewith for coupling energy from said direct current voltage source to said first inductance means; a source of undesirable voltage variations in said deflection circuit; and means coupled to said source of voltage variations and to said second variable inductance means and responsive to said voltage variations for varying the inductance of said second inductance means for changing the phase of said energy coupled to said first inductance means for maintaining substantially constant energy in said cOmmutation network from one deflection cycle to another.
Claim 3
Dependent Claim
59 words
A voltage regulator according to claim 1 wherein said second inductance means is serially coupled between said first inductance means and said direct current voltage source and said capacitance means is coupled between the junction of said first and second inductance means and a point of reference potential for forming a series resonant circuit with said second inductance means.
Claim 4
Dependent Claim
46 words
A voltage regulator according to claim 1 wherein said second inductance means is serially coupled between said first inductance means and said direct current voltage source and said capacitance means is coupled in parallel with said second inductance means for forming a parallel resonant circuit therewith.
Claim 5
Dependent Claim
86 words
A voltage regulator according to claim 1 wherein said second inductance means is coupled between the junction of said first inductance means and said direct current voltage source and a point of reference potential and said capacitance means includes a first capacitance coupled in parallel with said second inductance means for forming a parallel resonant circuit therewith and a second capacitance serially coupled with said second inductance means between said junction and said point of reference potential for blocking direct current in said second inductance means.
Claim 6
Dependent Claim
55 words
A voltage regulator according to claim 1 wherein said second inductance means includes a winding magnetically coupled thereto, said winding being coupled to said means responsive to said voltage variations such that the amount of inductance of said second inductance is varied in response to current variations in said winding caused by said voltage variations.
Claim 7
Dependent Claim
25 words
A voltage regulator according to claim 5 wherein an impedance matching means is coupled between said source of direct current and said second inductance means.
Claim 8
Dependent Claim
45 words
A voltage regulator according to claim 5 wherein said second inductance means includes a magnetic biasing means for causing magnetic flux in said second inductance means for opposing magnetic flux produced by direct current from said direct current voltage source traversing said second inductance means.
Claim 9
Dependent Claim
37 words
A voltage regulator according to claim 5 wherein unidirectional current conducting means are coupled in circuit with said second inductance means for blocking direct current from said direct current voltage source from traversing said second inductance 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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |