US4071832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current controlled oscillator
Assignee: Unisys Corp
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Filing: 1976-06-14
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Granted: 1978-01-31
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Expires: 1996-06-14
Abstract
Abstract An oscillator utilizing a pair of transistors interconnected with a resonance circuit in the collector circuits thereof such that by regulation of the current flow to the connected emitters, the frequency of oscillation is regulated.
Inventors
- 👤 Robert L. Cloke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:45
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1206; H03B5/1212; H03B5/1231
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
141 words
A transistor oscillator comprising, in combination: first and second transistors; a current source connected to supply current to each transistor emitter; a first circuit including a short circuit conductor connected between the base of said first transistor and the collector of said second transistor; a second circuit including a short circuit conductor connected between the base of said second transistor and the collector of said first transistor; a resonance circuit connecting said first and second circuits; a current return path from one said circuit to the current supply whereby oscillatory signals will be generated in the circuits; means to regulate the current flow from the source through the transistors to provide current at levels exceeding the saturation of the transistors to vary the frequency range of the oscillator signals; and means to detect the frequency of oscillation across the resonance circuit.
Claim 2
Dependent Claim
141 words
A transistor oscillator comprising, in combination: first and second transistors; a current source connected to supply current to each transistor emitter; a first circuit including a short circuit conductor connected between the base of said first transistor and the collector of said second transistor; a second circuit including a short circuit conductor connected between the base of said second transistor and the collector of said first transistor; a resonance circuit connecting said first and second circuits; a current return path from one said circuit to the current supply whereby oscillatory signals will be generated in the circuits; means to regulate the current flow from the source through the transistors to provide current at levels exceeding the saturation of the transistors to vary the frequency range of the oscillator signals; and means to detect the frequency of oscillation across the resonance circuit.
Claim 3
Dependent Claim
17 words
A transistor oscillator as defined in claim 1 wherein said resonance circuit is an LC parallel circuit.
References Cited (Backward Citations)
US2852680A
Cited
US3205352A
Cited
US3364465A
Cited
US3286199A
Cited
US3378790A
Cited
US3649929A
Cited
US3986152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |