US3275950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double sideband suppressed carrier balanced modulator circuit
Assignee: TELEVISO ELECTRONICS DIVISION
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Filing: 1963-04-29
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Granted: 1966-09-27
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Edmund E Birr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN IMPROVED BALANCED MODULATOR CIRCUIT COMPRISING IN COMBINATION TWO VACUUM TUBES EACH HAVING AN ANODE, A CATHODE AND A CONTROL GRID, A RESONANT CIRCUIT TUNED TO R.F. SIGNAL ENERGY, A MODULATING SIGNAL ENERGY SOURCE, THE ANODES BEING CONNECTED TO PUSH-PULL CONFIGURATION TO THE RESONANT CIRCUIT, THE ANODES BEING BIASED FROM THE MODULATING ENERGY SOURCE THROUGH THE RESONANT CIRCUIT, THE CATHODES BEING CONNECTED TO GROUND POTENTIAL, AN R.F. SIGNAL ENERGY INPUT TERMINAL FOR APPLYING R.F. SIGNAL ENERGY, THE CONTROL GRIDS BEING CONNECTED IN PARALLEL TO THE R.F. SIGNAL ENERGY INPUT TERMINAL; D.C. BIAS VOTAGE MEANS, SAID PARALLEL SEPARATE CONNECTION MEANS BETWEEN THE CONTROL GRIDS AND THE D.C. BIAS VOLTAGE MEANS, WHEREBY THE VOLTAGE EXCURSIONS OF THE CONTROL GRIDS OF THE INDIVIDUAL TUBES INDUCED BY THE ANODE VOLTAGE EXCURSIONS OF THE RESPECTIVE TUBES ARE LIMITED ONLY THE IMPEDANCE OF THE GRID CIRCUIT ASSOCIATED WITH THE INDIVIDUAL TUBE.
Claim 2
Dependent Claim
145 words
AN IMPROVED BALANCED MODULATOR CIRCUIT COMPRISING IN COMBINATION TWO VACUUM TUBES EACH HAVING AN ANODE, A CATHODE AND A CONTROL GRID, A RESONANT CIRCUIT TUNED TO R.F. SIGNAL ENERGY, A MODULATING SIGNAL ENERGY SOURCE, THE ANODES BEING CONNECTED TO PUSH-PULL CONFIGURATION TO THE RESONANT CIRCUIT, THE ANODES BEING BIASED FROM THE MODULATING ENERGY SOURCE THROUGH THE RESONANT CIRCUIT, THE CATHODES BEING CONNECTED TO GROUND POTENTIAL, AN R.F. SIGNAL ENERGY INPUT TERMINAL FOR APPLYING R.F. SIGNAL ENERGY, THE CONTROL GRIDS BEING CONNECTED IN PARALLEL TO THE R.F. SIGNAL ENERGY INPUT TERMINAL; D.C. BIAS VOTAGE MEANS, SAID PARALLEL SEPARATE CONNECTION MEANS BETWEEN THE CONTROL GRIDS AND THE D.C. BIAS VOLTAGE MEANS, WHEREBY THE VOLTAGE EXCURSIONS OF THE CONTROL GRIDS OF THE INDIVIDUAL TUBES INDUCED BY THE ANODE VOLTAGE EXCURSIONS OF THE RESPECTIVE TUBES ARE LIMITED ONLY THE IMPEDANCE OF THE GRID CIRCUIT ASSOCIATED WITH THE INDIVIDUAL TUBE.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |