US3242416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous impedance-type converter
Assignee: Hoffman Electronics Corp
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Filing: 1960-10-10
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Granted: 1966-03-22
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Expires: 1980-10-10
Abstract
No abstract record available.
Inventors
- 👤 Richard L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:08
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/125; H02M3/135; H02M3/137
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A SOLID STATE VOLTAGE STEP-DOWN TRANSFORMER, COMPRISING FIRST AND SECOND TERMINALS FOR CONNECTION TO A SINE-WAVE VOLTAGE SOURCE, AN ELECTRICAL LOAD, FIRST AND SECOND OUTPUT TERMINALS CONNECTED TO SAID LOAD, A CONTROLLED SOLID-STATE RECTIFIER HAVING FIRST, SECOND AND CONTROL ELECTRODES, THEFIRST AND SECOND ELECTRODES OF SAID CONTROLLED RECTIFIER BEING CONNECTED BETWEEN SAID SECOND OUTPUT TERMINAL AND SAID SECOND INPUT TERMINAL, SAID FIRST INPUT TERMINAL BEING CONNECTED TO SAID FIRST OUTPUT TERMINAL, AND VOLTAGE-SENSITIVE MEANS COUPLED BETWEEN SAID LAST-NAMED TERMINALS AND SAID CONTROL ELECTRODE FOR ESTABLISHING A CONTROL CURRENT BETWEEN SAID CONTROL ELECTRODE AND SAID SECOND ELECTRODE OF SAID CONTROLLED RECTIFIER, WHEREBY SAID RECTIFIER IS CAUSE TO CONDUCT FOR A PRESELECTED PORTION ONLY OF THE INPUT CYCLE.
Claim 2
Dependent Claim
116 words
A SOLID STATE VOLTAGE STEP-DOWN TRANSFORMER, COMPRISING FIRST AND SECOND TERMINALS FOR CONNECTION TO A SINE-WAVE VOLTAGE SOURCE, AN ELECTRICAL LOAD, FIRST AND SECOND OUTPUT TERMINALS CONNECTED TO SAID LOAD, A CONTROLLED SOLID-STATE RECTIFIER HAVING FIRST, SECOND AND CONTROL ELECTRODES, THEFIRST AND SECOND ELECTRODES OF SAID CONTROLLED RECTIFIER BEING CONNECTED BETWEEN SAID SECOND OUTPUT TERMINAL AND SAID SECOND INPUT TERMINAL, SAID FIRST INPUT TERMINAL BEING CONNECTED TO SAID FIRST OUTPUT TERMINAL, AND VOLTAGE-SENSITIVE MEANS COUPLED BETWEEN SAID LAST-NAMED TERMINALS AND SAID CONTROL ELECTRODE FOR ESTABLISHING A CONTROL CURRENT BETWEEN SAID CONTROL ELECTRODE AND SAID SECOND ELECTRODE OF SAID CONTROLLED RECTIFIER, WHEREBY SAID RECTIFIER IS CAUSE TO CONDUCT FOR A PRESELECTED PORTION ONLY OF THE INPUT CYCLE.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |