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US3289098A Expired / Lapsed US ⏱️ 0.0 years remaining

Starting circuit for semiconductor oscillator

Assignee: Motorola Solutions Inc
•
Filing: 1964-06-15
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Granted: 1966-11-29
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Expires: 1984-06-15
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Abstract

No abstract record available.

Inventors

  • 👤 Gary A Cannalte

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 18:24
CPC Classifications
H; H03; H03L; H03L3/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 166 words
A TRANSISTOR OSCILLATOR STARTING CIRCUIT INCLUDING IN COMBINATION, FIRST AND SECOND INPUT TERMINALS ADAPTED TO BE COUPLED TO DIRECT CURRENT SUPPLY MEANS, A PLURALITY OF SWITCHING TRANSISTORS EACH HAVING BASE AND EMITTER ELECTRODES, FIRST CIRCUIT MEANS COUPLED TO SAID PLURALITY OF SWITCHING TRANSISTORS FORMING THEREWITH AN OSCILLATOR CIRCUIT, SECOND CIRCUIT MEANS COUPLING SAID EMITTER ELECTRODES OF EACH OF SAID PLURALITY OF SWITCHING TRANSISTORS TO SAID FIRST INPUT TERMINAL, CAPACITOR MEANS COUPLED TO SAID SECOND TERMINAL, FIRST AND SECOND RESISTORS SERIES CONNECTED BETWEEN SAID FIRST INPUT TERMINAL AND SAID CAPACITOR MEANS, AND THIRD CIRCUIT MEANS COUPLING THE COMMON JUNCTION POINT OF SAID FIRST AND SECOND RESISTORS TO SAID BASE ELECTRODES OF EACH OF SAID PLURALITY OF SWITCHING TRANSISTORS, SAID FIRST AND SECOND RESISTORS BEING RESPONSIVE TO THE CHARGING CURRENT OF SAID CAPACITOR MEANS TO GENERATE A BIAS POTENTIAL WHEREBY SAID SWITCHING TRANSISTORS ARE BIASED TO CONDUCTION, WITH ONLY SAID FIRST AND SECOND RESISTORS AND SAID CAPACITOR MEANS ACTING TO PROVIDE SAID BIAS POTENTIAL FOR SAID OSCILLATOR CIRCUIT.
Claim 2
Dependent Claim 166 words
A TRANSISTOR OSCILLATOR STARTING CIRCUIT INCLUDING IN COMBINATION, FIRST AND SECOND INPUT TERMINALS ADAPTED TO BE COUPLED TO DIRECT CURRENT SUPPLY MEANS, A PLURALITY OF SWITCHING TRANSISTORS EACH HAVING BASE AND EMITTER ELECTRODES, FIRST CIRCUIT MEANS COUPLED TO SAID PLURALITY OF SWITCHING TRANSISTORS FORMING THEREWITH AN OSCILLATOR CIRCUIT, SECOND CIRCUIT MEANS COUPLING SAID EMITTER ELECTRODES OF EACH OF SAID PLURALITY OF SWITCHING TRANSISTORS TO SAID FIRST INPUT TERMINAL, CAPACITOR MEANS COUPLED TO SAID SECOND TERMINAL, FIRST AND SECOND RESISTORS SERIES CONNECTED BETWEEN SAID FIRST INPUT TERMINAL AND SAID CAPACITOR MEANS, AND THIRD CIRCUIT MEANS COUPLING THE COMMON JUNCTION POINT OF SAID FIRST AND SECOND RESISTORS TO SAID BASE ELECTRODES OF EACH OF SAID PLURALITY OF SWITCHING TRANSISTORS, SAID FIRST AND SECOND RESISTORS BEING RESPONSIVE TO THE CHARGING CURRENT OF SAID CAPACITOR MEANS TO GENERATE A BIAS POTENTIAL WHEREBY SAID SWITCHING TRANSISTORS ARE BIASED TO CONDUCTION, WITH ONLY SAID FIRST AND SECOND RESISTORS AND SAID CAPACITOR MEANS ACTING TO PROVIDE SAID BIAS POTENTIAL FOR SAID OSCILLATOR CIRCUIT.

References Cited (Backward Citations)

US3008068A Cited
US2968739A Cited
FR1247381A Cited
US3172060A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-11-28 1970-05-30 1970-11-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-11-28 1974-05-30 1974-11-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-11-28 1978-05-30 1978-11-29 $7700.00 Window Closed / Lapsed

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