Patent US3230480A successfully refreshed from Google Patents.
US3230480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated relaxation oscillator utilizing a unijunction transistor
Assignee: Individual
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Filing: 1963-06-04
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Granted: 1966-01-18
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Expires: 1983-06-04
Abstract
No abstract record available.
Inventors
- 👤 Wesley E Prather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:19
CPC Classifications
H; H03; H03K; H03K7/00; H03K7/08; H03K3/00; H03K3/02; H03K3/35; H03K3/351
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A FREQUENCY MODULATED RELAXATION OSCILLATOR COMPRISING: A UNIJUCTION TRANSISTOR HAVING A FIRST BASE, A SECOND BASE, AND AN EMITTER, A FIRST CAPACITOR CONNECTED BETWEEN SAID FIRST BASE AND SAID SECOND BASE, A SECOND CAPACITOR CONNECTED BETWEEN SAID EMITTER AND SAID SECOND BASE, MEANS FOR CHARGING SAID FIRST CAPACITOR WHEN SAID TRANSISTOR IS NON-CONDUCTING AND FOR CHARGING SAID SECOND CAPACITOR WHEN SAID TRANSISTOR IS CONDUCTING, MEANS FOR DISCHARGING SAID SECOND CAPACITOR WHEN SAID TRANSISTOR IS NON-CONDUCTING, AND A PAIR OF INPUT TERMINALS CONNECTED ACROSS SAID SECOND CAPACITOR FOR RECEIVING A MODULATING SIGNAL FOR VARYING THE PERIOD OF DISCHARGE OF SAID SECOND CAPACITOR TO THEREBY MODULATE THE FREQUENCY OF SAID OSCILLATOR.
Claim 2
Dependent Claim
109 words
A FREQUENCY MODULATED RELAXATION OSCILLATOR COMPRISING: A UNIJUCTION TRANSISTOR HAVING A FIRST BASE, A SECOND BASE, AND AN EMITTER, A FIRST CAPACITOR CONNECTED BETWEEN SAID FIRST BASE AND SAID SECOND BASE, A SECOND CAPACITOR CONNECTED BETWEEN SAID EMITTER AND SAID SECOND BASE, MEANS FOR CHARGING SAID FIRST CAPACITOR WHEN SAID TRANSISTOR IS NON-CONDUCTING AND FOR CHARGING SAID SECOND CAPACITOR WHEN SAID TRANSISTOR IS CONDUCTING, MEANS FOR DISCHARGING SAID SECOND CAPACITOR WHEN SAID TRANSISTOR IS NON-CONDUCTING, AND A PAIR OF INPUT TERMINALS CONNECTED ACROSS SAID SECOND CAPACITOR FOR RECEIVING A MODULATING SIGNAL FOR VARYING THE PERIOD OF DISCHARGE OF SAID SECOND CAPACITOR TO THEREBY MODULATE THE FREQUENCY OF SAID OSCILLATOR.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |