US3300705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated d. c. voltage converter
Assignee: International Standard Electric Corp
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Filing: 1963-08-28
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Granted: 1967-01-24
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Expires: 1983-08-28
Abstract
No abstract record available.
Inventors
- 👤 Hunstad Asbjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:31
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; G; G01; G01T; G01T1/00; G01T1/16; G01T1/17; G01T1/175; H02M3/33507; H02M3/338; H02M3/3385
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A VOLTAGE CONVERTER FOR CONVERTING LOW MAGNITUDE D.C. VOLTAGE TO A HIGH MAGNITUDE D.C. VOLTAGE COMPRISING A SOURCE OF D.C. VOLTAGE, A TRANSISTOR OSCILLATOR COUPLED TO SAID SOURCE, A TRANSFORMER HAVING A PRIMARY AND SECONDARY WINDING SAID PRIMARY WINDING BEING CONNECTED TO SAID TRANSISTOR OSCILLATOR, A PLURALITY OF OUTPUT RECTIFYING MEANS COUPLED TO SAID SECONDARY WINDING AT TAPPED POINTS THEREALONG, MEANS FOR APPLYING A FEEDBACK CURRENT TO SAID TRANSISTOR OSCILLATOR FROM SAID SECONDARY WINDING, VOLTAGE STABILIZATION MEANS COUPLED IN PARALLEL WITH SAID MEANS FOR APPLYING A FEEDBACK CURRENT, AND A CURRENT LIMITING TRANSISTOR, THE BASE-EMITTER OF WHICH IS INTERPOSED BETWEEN SAID STABILIZATION AND RECTIFYING MEANS, SUCH THAT SAID LIMITING TRANSISTOR HAS A COLLECTOR COUPLED TO SAID OUTPUT RECTIFYING MEANS TO PROVIDE A VOLTAGE CORRESPONDING TO THE OPERATING VOLTAGE OF SAID VOLTAGE
Claim 2
Dependent Claim
131 words
A VOLTAGE CONVERTER FOR CONVERTING LOW MAGNITUDE D.C. VOLTAGE TO A HIGH MAGNITUDE D.C. VOLTAGE COMPRISING A SOURCE OF D.C. VOLTAGE, A TRANSISTOR OSCILLATOR COUPLED TO SAID SOURCE, A TRANSFORMER HAVING A PRIMARY AND SECONDARY WINDING SAID PRIMARY WINDING BEING CONNECTED TO SAID TRANSISTOR OSCILLATOR, A PLURALITY OF OUTPUT RECTIFYING MEANS COUPLED TO SAID SECONDARY WINDING AT TAPPED POINTS THEREALONG, MEANS FOR APPLYING A FEEDBACK CURRENT TO SAID TRANSISTOR OSCILLATOR FROM SAID SECONDARY WINDING, VOLTAGE STABILIZATION MEANS COUPLED IN PARALLEL WITH SAID MEANS FOR APPLYING A FEEDBACK CURRENT, AND A CURRENT LIMITING TRANSISTOR, THE BASE-EMITTER OF WHICH IS INTERPOSED BETWEEN SAID STABILIZATION AND RECTIFYING MEANS, SUCH THAT SAID LIMITING TRANSISTOR HAS A COLLECTOR COUPLED TO SAID OUTPUT RECTIFYING MEANS TO PROVIDE A VOLTAGE CORRESPONDING TO THE OPERATING VOLTAGE OF SAID VOLTAGE
References Cited (Backward Citations)
US2791739A
Cited
FR1300422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |