US3885198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage regulator
Assignee: RCA Licensing Corp
•
Filing: 1973-08-06
•
Granted: 1975-05-20
•
Expires: 1993-08-06
Abstract
Abstract In a horizontal deflection and high voltage generating circuit in a television receiver, the high voltage is regulated to remain substantially constant with variations in picture tube beam current variation and receiver direct current power supply variation. A high voltage variation representative signal is coupled to a regulator circuit including a saturable reactor magnetically biased such that a failure comprising either a short or open circuit in the regulator circuit causes the input energy to the deflection circuit not to increase beyond a predetermined amount.
Inventors
- 👤 Dalton Harold Pritchard
- 👤 Alfred Christian Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:01
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H04N3/185; H04N3/1856
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
In a deflection system, a voltage regulator, comprising: a terminal supplying operating current; variable inductance means coupled to said terminal; switching means coupled to said variable inductance means for receiving operating current therefrom and operable from a first to a second state during each deflection cycle; output circuit means including a deflection winding and a transformer coupled to said switching means for receiving alternating current energy therefrom during each deflection cycle; regulating means coupled to said output circuit and to said variable inductance means and responsive to the amplitude of energy in said output circuit means for controlling the inductance of said variable inductance means; said variable inductance means including biasing means for providing a fixed magnitude magnetic field component in said variable inductance means for limiting the peak current supplied to said switching means independent of the operation of said regulating means.
Claim 2
Dependent Claim
143 words
In a deflection system, a voltage regulator, comprising: a terminal supplying operating current; variable inductance means coupled to said terminal; switching means coupled to said variable inductance means for receiving operating current therefrom and operable from a first to a second state during each deflection cycle; output circuit means including a deflection winding and a transformer coupled to said switching means for receiving alternating current energy therefrom during each deflection cycle; regulating means coupled to said output circuit and to said variable inductance means and responsive to the amplitude of energy in said output circuit means for controlling the inductance of said variable inductance means; said variable inductance means including biasing means for providing a fixed magnitude magnetic field component in said variable inductance means for limiting the peak current supplied to said switching means independent of the operation of said regulating means.
Claim 3
Dependent Claim
65 words
A voltage regulator according to claim 1 wherein said variable inductance means includes a first inductance coupled to said terminal and said switching means and a saturable reactor coupled in circuit with said first inductance, said regulating means being coupled to a winding of said saturable reactor for controlling the amount of current therein and thereby determining the net inductance of said variable inductance means.
Claim 4
Dependent Claim
26 words
A voltage regulator according to claim 2 wherein said biasing means comprises a permanent magnet disposed relative to said saturable reactor for magnetically biasing said reactor.
Claim 5
Dependent Claim
252 words
In a deflection current and high voltage generating system in which energy consumed by the deflection and high voltage circuits is replenished each deflection cycle through an inductance, a regulator circuit comprising: a terminal supplying operating current; first inductance means coupled to said terminal; deflection current switch means coupled to said first inductance means for receiving operating current therefrom during each deflection cycle for generating trace and retrace interval portions during each deflection cycle; output circuit means including a deflection winding and a transformer coupled to said switch means for producing scanning current in said deflection winding and retrace pulses in said transformer; regulating control means coupled to said output circuit and responsive to voltage changes representative of voltage changes of said retrace pulses for producing a control current; second inductance means comprising a saturable reactor including a first winding coupled to said regulating control means for receiving said control current and a second winding coupled in circuit with said first inductance means; and means for providing a fixed magnitude magnetic field component in said saturable reactor independent of the operation of said regulating control means such that in the event of an open circuit or short circuit condition of said control current the net inductance of said first inductance means and said second winding is decreased relative to the net inductance presented under a condition of a normal range of control current for limiting the operating current passed to said output circuit means for limiting the voltage of said retrace pulses.
Claim 6
Dependent Claim
252 words
In a deflection current and high voltage generating system in which energy consumed by the deflection and high voltage circuits is replenished each deflection cycle through an inductance, a regulator circuit comprising: a terminal supplying operating current; first inductance means coupled to said terminal; deflection current switch means coupled to said first inductance means for receiving operating current therefrom during each deflection cycle for generating trace and retrace interval portions during each deflection cycle; output circuit means including a deflection winding and a transformer coupled to said switch means for producing scanning current in said deflection winding and retrace pulses in said transformer; regulating control means coupled to said output circuit and responsive to voltage changes representative of voltage changes of said retrace pulses for producing a control current; second inductance means comprising a saturable reactor including a first winding coupled to said regulating control means for receiving said control current and a second winding coupled in circuit with said first inductance means; and means for providing a fixed magnitude magnetic field component in said saturable reactor independent of the operation of said regulating control means such that in the event of an open circuit or short circuit condition of said control current the net inductance of said first inductance means and said second winding is decreased relative to the net inductance presented under a condition of a normal range of control current for limiting the operating current passed to said output circuit means for limiting the voltage of said retrace pulses.
Claim 7
Dependent Claim
20 words
A voltage regulator according to claim 4 wherein said means for magnetically biasing said saturable reactor comprises a permanent magnet.
References Cited (Backward Citations)
US3803447A
Cited
US3767960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |