US3213346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor power supply
Assignee: King Radio Corp
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Filing: 1962-11-23
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Granted: 1965-10-19
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward J King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3385; H02M3/3387; H02M3/3388
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
247 words
AN IMPROVED TRANSISTORIZED POWER SUPPLY COMPRISING: (A) A SATURABLE CORE TRANSFORMER HAVING A CENTER TAPPED INPUT AND A TAPPED OUTPUT WINDING; (B) EACH SIDE OF SAID CENTER TAPPED INPUT WINDING HAVING A SECOND TAP BETWEEN ITS END AND THE CENTER TAP; (C) A PAIR OF TRANSISTORS EACH HAVING A COLLECTOR, EMITTER AND A BASE; (D) EACH OF SAID EMITTERS CONNECTED TO A SECOND TAP; (E) A FIRST RESISTANCE MEANS CONNECTED BETWEEN EACH OF THE ENDS OF SAID INPUT WINDING AND SAID CORRESPONDING BASES; (F) A SECOND RESISTIVE MEANS CONNECTED BETWEEN EACH OF SAID BASES AND GROUND; (G) EACH OF SAID COLLEFTORS CONNECTED TO GROUND; (H) A DIRECT CURRENT SOURCE HAVING A POSITIVE AND NEGATIVE TERMINAL, SAID POSITIVE TERMINAL CONNECTED TO SAID CENTER TAP ON SAID INPUT WINDING AND SAID NEGATIVE TERMINAL CONNECTED TO GROUND; (I) A FIRST AND SECOND DIODE HAVING THEIR ANODES CONNECTED TO THE ENDS RESPECTIVELY OF SAID OUTPUT WINDING AND THEIR CATHODES CONNECTED TOGETHER; (J) A LOAD CONNECTED BETWEEN SAID CATHODES AND GROUND; (K) A SECOND SET OF DIODES CONNECTED RESPECTIVELY BETWEEN THE ENDS OF SAID OUTPUT WINDING AND THE CORRESPONDING BASE OF SAID TRANSISTORS AND POLED TO CONDUCT CURRENT FROM SAID BASE TO SAID LOAD; WHEREBY AN INCREASE IN LOAD CURRENT WILL RESULT IN AN INCREASE IN CURRENT THROUGH SAID SECOND RESISTIVE MEANS INCREASE IN CURRENT THROUGH SAID SECOND RESISTIVE MEANS IN CREASING SAID BASE TO EM ITTER CURRENT INCREASING THE EFFICIENCY OF SAID TRANSISTORS AND REDUCING THE VOLTAGE DROP AT SAID LOAD.
Claim 2
Dependent Claim
247 words
AN IMPROVED TRANSISTORIZED POWER SUPPLY COMPRISING: (A) A SATURABLE CORE TRANSFORMER HAVING A CENTER TAPPED INPUT AND A TAPPED OUTPUT WINDING; (B) EACH SIDE OF SAID CENTER TAPPED INPUT WINDING HAVING A SECOND TAP BETWEEN ITS END AND THE CENTER TAP; (C) A PAIR OF TRANSISTORS EACH HAVING A COLLECTOR, EMITTER AND A BASE; (D) EACH OF SAID EMITTERS CONNECTED TO A SECOND TAP; (E) A FIRST RESISTANCE MEANS CONNECTED BETWEEN EACH OF THE ENDS OF SAID INPUT WINDING AND SAID CORRESPONDING BASES; (F) A SECOND RESISTIVE MEANS CONNECTED BETWEEN EACH OF SAID BASES AND GROUND; (G) EACH OF SAID COLLEFTORS CONNECTED TO GROUND; (H) A DIRECT CURRENT SOURCE HAVING A POSITIVE AND NEGATIVE TERMINAL, SAID POSITIVE TERMINAL CONNECTED TO SAID CENTER TAP ON SAID INPUT WINDING AND SAID NEGATIVE TERMINAL CONNECTED TO GROUND; (I) A FIRST AND SECOND DIODE HAVING THEIR ANODES CONNECTED TO THE ENDS RESPECTIVELY OF SAID OUTPUT WINDING AND THEIR CATHODES CONNECTED TOGETHER; (J) A LOAD CONNECTED BETWEEN SAID CATHODES AND GROUND; (K) A SECOND SET OF DIODES CONNECTED RESPECTIVELY BETWEEN THE ENDS OF SAID OUTPUT WINDING AND THE CORRESPONDING BASE OF SAID TRANSISTORS AND POLED TO CONDUCT CURRENT FROM SAID BASE TO SAID LOAD; WHEREBY AN INCREASE IN LOAD CURRENT WILL RESULT IN AN INCREASE IN CURRENT THROUGH SAID SECOND RESISTIVE MEANS INCREASE IN CURRENT THROUGH SAID SECOND RESISTIVE MEANS IN CREASING SAID BASE TO EM ITTER CURRENT INCREASING THE EFFICIENCY OF SAID TRANSISTORS AND REDUCING THE VOLTAGE DROP AT SAID LOAD.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |