US3671881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resettable logic gate multivibrator
Assignee: RCA Corp
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Filing: 1970-12-14
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Granted: 1972-06-20
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Expires: 1990-12-14
Abstract
Abstract A multivibrator circuit which can be selectively started and stopped in response to a control signal and in which phase and frequency relationships are maintained uniform and synchronized with the control signal.
Inventors
- 👤 John James Yorganjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/027; H03K3/03; Y; Y10; Y10S; Y10S331/00; Y10S331/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
In combination, a plurality of gate circuit means each having input and output terminals, the output terminal of each gate circuit means coupled to an input terminal of a different gate circuit means, a plurality of feedback means, each of said feedback means associated with a respective one of said gate circuit means and including diode means connected between the output terminal of the associated gate circuit means and an input terminal thereof, said diode means connected to permit the level of an input signal to approach the signal level at the output terminal, input means connected to a further input terminal of one of said gate circuit means, and output means connected to the output terminal of the same said one of said gate circuit means to which said input means is connected.
Claim 2
Dependent Claim
134 words
In combination, a plurality of gate circuit means each having input and output terminals, the output terminal of each gate circuit means coupled to an input terminal of a different gate circuit means, a plurality of feedback means, each of said feedback means associated with a respective one of said gate circuit means and including diode means connected between the output terminal of the associated gate circuit means and an input terminal thereof, said diode means connected to permit the level of an input signal to approach the signal level at the output terminal, input means connected to a further input terminal of one of said gate circuit means, and output means connected to the output terminal of the same said one of said gate circuit means to which said input means is connected.
Claim 3
Dependent Claim
59 words
The combination recited in claim 1 wherein said plurality of gate circuit means includes first and second gating circuit means, said feedback means including a DC feedback path, said DC feedback path arranged so that at least one of said first and second gating circuit means is unstable in the absence of an input signal at said input means.
Claim 4
Dependent Claim
41 words
The combination recited in claim 1 wherein said feedback means includes resistor means connected in series with said diode means, and capacitor means connected from said output terminals to said input terminals to provide AC coupling between said gate circuit means.
Claim 5
Dependent Claim
38 words
The combination recited in claim 1 wherein at least one of said gate circuit means has a plurality of input terminals, said input means being connected to one input terminal of that one of said gate circuit means.
Claim 6
Dependent Claim
58 words
The combination recited in claim 1 wherein said gate circuit means comprise a multivibrator circuit for supplying regularly recurring signals, said input means selectively supplies signals to one of said gate circuit means to alter the rate of said regularly recurring signals while retaining synchronism between the regularly recurring signals and an input signal from said input means.
Claim 7
Dependent Claim
67 words
The combination recited in claim 5 wherein said multivibrator circuit includes a pair of interconnected gate circuit means, said feedback means rendering said gate circuit means unstable in steady-state operation, and the coupling means connected between said gate circuit means transfer signals from one to another of said gate circuit means to control the operation thereof in the absence of an input signal from said input means.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |