Patent US3116159A successfully refreshed from Google Patents.
US3577014A
Expired / Lapsed
US
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Monostable multivibrator with complementary nor gates
Assignee: National Aeronautics and Space Administration
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Filing: 1970-07-08
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Granted: 1971-05-04
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Expires: 1990-07-08
Abstract
Abstract First and second positive NOR complementary Mos gates are employed to form a monostable multivibrator circuit in which the output of the first gate forms the input to the second gate and the output of the second gate forms the system output. The trigger signal supplied to the gates is differentiated through a resistance-capacitance circuit and supplied to the first gate. The differentiated signal may be bypassed across the first gate through a semiconductor diode to the input of the second gate to permit narrow pulse width outputs to reduce input pulse power and to increase the duty cycle of the circuit. A feedback capacitor connected across both gates is employed in an internal resistance-capacitance circuit to provide the time constant for the multivibrator. In a modified form, a plurality of monostable multivibrator circuits are employed together to generate a sequence of control pulses in a date processor.
Inventors
- 👤 Robert W O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/353; H03K3/355; H03K5/00; H03K5/15; H03K5/15013; H03K5/1506; H03K5/15086
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
A monostable multivibrator circuit comprising: a. first and second gate means each having input and output means for forming a given electrical signal on their respective output means when a predetermined signal occurs in their respective input means; b. connecting means extending between said first and second gate means for conveying the signal on the output of said first gate means to the input means of said second gate means; c. time control feedback means extending between said input means of said first gate means and said output means of said second gate means for conveying an output-dependent feedback signal to said input of said first gate means for controlling the time duration of a signal appearing at the output of said second gate means; and d. bypass means extending between the input and output of said first gate means for bypassing said first gate means following onset of an input signal into said input means of said first gate means to produce small pulse width output signals at the output of said second gate means.
Claim 2
Dependent Claim
176 words
A monostable multivibrator circuit comprising: a. first and second gate means each having input and output means for forming a given electrical signal on their respective output means when a predetermined signal occurs in their respective input means; b. connecting means extending between said first and second gate means for conveying the signal on the output of said first gate means to the input means of said second gate means; c. time control feedback means extending between said input means of said first gate means and said output means of said second gate means for conveying an output-dependent feedback signal to said input of said first gate means for controlling the time duration of a signal appearing at the output of said second gate means; and d. bypass means extending between the input and output of said first gate means for bypassing said first gate means following onset of an input signal into said input means of said first gate means to produce small pulse width output signals at the output of said second gate means.
Claim 3
Dependent Claim
19 words
A monostable multivibrator circuit as defined in claim 1 wherein said gate means include first and second NOR gates.
Claim 4
Dependent Claim
18 words
A monostable multivibrator circuit as defined in claim 1 wherein said time control feedback means includes capacitive means.
Claim 5
Dependent Claim
17 words
A monostable multivibrator circuit as defined in claim 1 wherein said bypass means includes semiconductor diode means.
Claim 6
Dependent Claim
28 words
A monostable multivibrator circuit as defined in claim 2 wherein: a. said time control feedback means includes capacitive means; and b. said bypass means includes semiconductor diode means.
Claim 7
Dependent Claim
33 words
A monostable multivibrator as defined in claim 2 further including system input means connected to said input means of said first gate means for differentiating the system input signal to said multivibrator circuit.
Claim 8
Dependent Claim
28 words
A monostable multivibrator circuit as defined in claim 6 wherein: a. said time control feedback means includes capacitive means; and b. said bypass means includes semiconductor diode means.
Claim 9
Dependent Claim
25 words
A monostable multivibrator circuit as defined in claim 7 wherein said system input means includes resistive and capacitive means for differentiating said system input signal.
References Cited (Backward Citations)
US3509379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |