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US3424972A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for transmitting control pulses to a rectifier

Assignee: ABB Norden Holding AB
•
Filing: 1966-09-09
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Granted: 1969-01-28
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Expires: 1986-09-09
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Abstract

Abstract Control pulse transmission device for transmitting control pulses of a certain length from a control pulse generator to the control electrode of a rectifier. Said transmission device comprises an impulse transformer and a second transformer, each transformer having a primary winding, a secondary winding and a biasing winding. The primary winding of the impulse transformer is connected to said pulse generator; the secondary winding of the impulse transformer is connected to the control electrode of an extinguishable thyristor connected in series with the primary winding of the second transformer and a voltage source; the secondary winding of said second transformer is connected to the control electrode of said rectifier.

Inventors

  • 👤 Staffan Ekstrom
  • 👤 Lindy Yngvesson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 13:52
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M1/088; H02M1/092; H02M1/02; H02M1/04; H02M1/081; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/56

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US3333178A Cited
US3218541A Cited
US3223922A Cited
US3263125A Cited
US3311784A Cited
US3297911A Cited
US3317789A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-01-28 1972-07-29 1973-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-01-28 1976-07-29 1977-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-01-28 1980-07-29 1981-01-28 $7700.00 Window Closed / Lapsed

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