US3598909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A high-voltage generator circuit configuration utilizing a ceramic transformer
Assignee: Panasonic Holdings Corp
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Filing: 1968-07-25
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Granted: 1971-08-10
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Expires: 1988-07-25
Abstract
Abstract A high-voltage generator circuit configuration. A ceramic transformer which generates a high voltage and has plural resonant modes is connected to a horizontal deflection circuit which generates a pulse voltage containing harmonic components so as to drive said ceramic transformer in its resonant modes. A choke coil is wound on a deflection yoke and acts as a path for DC current so as to supply power to said horizontal deflection circuit.
Inventors
- 👤 Reiichi Sasaki
- 👤 Teruo Kitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H10; H10N; H10N30/00; H10N30/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A high-voltage generator circuit for a television receiver, comprising: a ceramic transformer having a frequency difference between the frequency of the one-wave resonating mode thereof and twice the frequency of the half-wave resonating mode thereof and being of a material in which the resonating mode changes as the temperature of said ceramic transformer changes when the repetitive frequency of the driving pulse voltage is constant; and a horizontal deflection output circuit coupled to the input of said ceramic transformer, said horizontal deflection output circuit generating a pulse voltage containing a fundamental frequency component exciting said half-wave resonating mode of said ceramic transformer and containing a second harmonicfrequency component exciting said one-wave resonating mode of said ceramic transformer, said ceramic transformer thereby being excited at both said half-wave resonating mode and said one-wave resonating mode, whereby the high output voltage remains substantially constant despite temperature changes of the material of the transformer.
Claim 2
Dependent Claim
151 words
A high-voltage generator circuit for a television receiver, comprising: a ceramic transformer having a frequency difference between the frequency of the one-wave resonating mode thereof and twice the frequency of the half-wave resonating mode thereof and being of a material in which the resonating mode changes as the temperature of said ceramic transformer changes when the repetitive frequency of the driving pulse voltage is constant; and a horizontal deflection output circuit coupled to the input of said ceramic transformer, said horizontal deflection output circuit generating a pulse voltage containing a fundamental frequency component exciting said half-wave resonating mode of said ceramic transformer and containing a second harmonicfrequency component exciting said one-wave resonating mode of said ceramic transformer, said ceramic transformer thereby being excited at both said half-wave resonating mode and said one-wave resonating mode, whereby the high output voltage remains substantially constant despite temperature changes of the material of the transformer.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |