US3824427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage regulator
Assignee: Thomas International Corp
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Filing: 1973-03-16
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Granted: 1974-07-16
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Expires: 1993-03-16
Abstract
Abstract A horizontal flyback transformer in a television receiver includes a driving choke winding coupled to a horizontal drive stage. A regulating winding is wound on the same core leg as the driving choke winding. A high voltage winding and a primary winding for driving a horizontal deflection yoke coil are wound on an opposite core leg. To regulate the high voltage developed by the high voltage winding, the regulating winding is coupled to a variable loading circuit controlled by current through a resistor in series with the driving choke winding. Each core leg includes an air gap selected to cause the leakage inductance between the primary winding and the driving choke winding to be equal to the inductance of the primary winding.
Inventors
- 👤 Leod F Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H04N3/185
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
101 words
In a television receiver including horizontal scanning means having horizontal transformer with a driving winding coupled to a horizontal drive stage and a high voltage winding for developing a high voltage of varying current, a regulating system, comprising: first and second core legs forming a transformer core for said horizontal transformer, said driving winding and said regulating winding being wound on said first core leg, said high voltage winding being wound on said second core leg, and circuit means for variably loading the regulating winding to maintain the high voltage developed by said high voltage winding at an approximately constant level.
Claim 2
Dependent Claim
101 words
In a television receiver including horizontal scanning means having horizontal transformer with a driving winding coupled to a horizontal drive stage and a high voltage winding for developing a high voltage of varying current, a regulating system, comprising: first and second core legs forming a transformer core for said horizontal transformer, said driving winding and said regulating winding being wound on said first core leg, said high voltage winding being wound on said second core leg, and circuit means for variably loading the regulating winding to maintain the high voltage developed by said high voltage winding at an approximately constant level.
Claim 3
Dependent Claim
50 words
The regulating system of claim 1 wherein said circuit means includes sensing means for generating a sensing signal which varies with changes in high voltage current, and feedback means coupled between said sensing means and said regulating winding for variably loading the regulating winding in response to said sensing signal.
Claim 4
Dependent Claim
30 words
The regulating system of claim 2 wherein said sensing means comprises resistive means in series with said driving winding for developing thereacross a voltage drop corresponding to said sensing signal.
Claim 5
Dependent Claim
48 words
The regulating system of claim 3 wherein said feedback means comprises semiconductor means for establishing a variable resistance, first network means for coupling said resistive means to said semiconductor means to control the resistance thereof, and second network means for coupling said regulating winding to said semiconductor means.
Claim 6
Dependent Claim
23 words
The regulating system of claim 4 wherein said second network means comprises a diode poled to pass current flow in only one direction.
Claim 7
Dependent Claim
16 words
The regulating system of claim 1 wherein said driving winding is concentric with said regulating winding.
Claim 8
Dependent Claim
38 words
The regulating system of claim 6 wherein said horizontal transformer further includes a deflection winding coupled to a horizontal deflection coil, said deflection winding being wound on said second core leg and concentric with said high voltage winding.
Claim 9
Dependent Claim
34 words
The regulating system of claim 7 including control means for establishing between said driving winding and said deflection winding a leakage inductance of a value approximately equal to the inductance of said deflection winding.
Claim 10
Dependent Claim
25 words
The regulating system of claim 8 wherein said control means comprises a pair of air gaps respectively located in said first and second core legs.
Claim 11
Dependent Claim
95 words
In a television receiver including horizontal scanning means having a flyback transformer with a high voltage winding for developing high voltage of varying current and a deflection winding coupled to a horizontal deflection coil, a regulating system, comprising; first and second core legs forming a transformer core for said flyback transformer, said high voltage winding and said deflection winding being wound on said second core leg, a regulating winding wound on sAid first core leg, and circuit means for variably loading the regulating winding to regulate the high voltage developed by said high voltage winding.
Claim 12
Dependent Claim
95 words
In a television receiver including horizontal scanning means having a flyback transformer with a high voltage winding for developing high voltage of varying current and a deflection winding coupled to a horizontal deflection coil, a regulating system, comprising; first and second core legs forming a transformer core for said flyback transformer, said high voltage winding and said deflection winding being wound on said second core leg, a regulating winding wound on sAid first core leg, and circuit means for variably loading the regulating winding to regulate the high voltage developed by said high voltage winding.
Claim 13
Dependent Claim
38 words
The regulating system of claim 10 wherein said high voltage winding is concentric with said deflection winding, and said flyback transformer includes a driving winding wound on said first core leg and coupled to a horizontal drive stage.
Claim 14
Dependent Claim
42 words
The regulating system of claim 11 wherein said circuit means includes a feedback resistor in series with said driving winding, and means responsive to the voltage drop across said feedback resistor for controlling a variable resistance in series with said regulating winding.
Claim 15
Dependent Claim
45 words
The regulating system of claim 12 wherein at least one of said core legs includes an air gap having a size to cause the leakage inductance between the driving winding and the deflection winding to be approximately equal to the inductance of the deflection winding.
Claim 16
Dependent Claim
83 words
In a television receiver including a horizontal output stage, a horizontal deflection coil, and a horizontal scanning circuit for coupling the horizontal output stage to the horizontal deflection coil, the improvement comprising: horizontal transformer means having a driving winding coupled to said horizontal output stage and a deflection winding coupled to said horizontal deflection coil, and control means for establishing between said driving winding sand said deflection winding a leakage inductance of a value approximately equal to the inductance of said deflection winding.
Claim 17
Dependent Claim
83 words
In a television receiver including a horizontal output stage, a horizontal deflection coil, and a horizontal scanning circuit for coupling the horizontal output stage to the horizontal deflection coil, the improvement comprising: horizontal transformer means having a driving winding coupled to said horizontal output stage and a deflection winding coupled to said horizontal deflection coil, and control means for establishing between said driving winding sand said deflection winding a leakage inductance of a value approximately equal to the inductance of said deflection winding.
Claim 18
Dependent Claim
35 words
The improvement of claim 14 wherein said horizontal transformer means has a magnetizable core generally forming a closed loop, and said control means comprises an air gap breaking the closed loop of the magnetizable core.
Claim 19
Dependent Claim
41 words
The improvement of claim 15 wherein said magnetizable core comprises two sections each of generally C-shape and having a pair of ends, and said air gap comprises a pair of air gaps separating the spaced adjacent ends of the two sections.
Claim 20
Dependent Claim
63 words
The improvement of claim 16 wherein said magnetizable core includes first and second core legs with one of said air gaps being located in said first core leg and the other of said air gaps being located in said second core leg, said driving winding being wound about said first core leg and said deflection winding being wound about said second core leg.
Claim 21
Dependent Claim
53 words
The improvement of claim 17 wherein said horizontal transformer means includes a regulating winding wound on said first core leg, a high voltage winding wound on said second core leg, and circuit means for variable loading the regulating winding to maintain an approximately constant level of high voltage from said high voltage winding.
Claim 22
Dependent Claim
59 words
The improvement of claim 14 wherein said horizontal transformer means includes a regulating winding and a high voltage winding, magnetizable core means having at least a first core leg and a second core leg, said deflection winding being wound on said first core leg, and at least one other of said windings being wound on said second core leg.
Claim 23
Dependent Claim
52 words
The improvement of claim 19 wherein said high voltage winding is wound on said first core leg and is concentric with said deflection winding, said regulating winding is wound on said second core leg, and said driving winding is wound on said second core leg and is concentric with said regulating winding.
Claim 24
Dependent Claim
28 words
The improvement of claim 20 wherein said control means comprises a pair of air gaps each located in a different one of said first and second core legs.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |