US3289098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting circuit for semiconductor oscillator
Assignee: Motorola Solutions Inc
•
Filing: 1964-06-15
•
Granted: 1966-11-29
•
Expires: 1984-06-15
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)
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 |