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US3956642A
Expired / Lapsed
US
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Voltage-controlled sweep multivibrator
Assignee: Individual
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Filing: 1975-01-20
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Granted: 1976-05-11
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Expires: 1995-01-20
Abstract
Abstract A multivibrator capable of extremely high-speed operation and producing a linear sweep waveform. This multivibrator contains within the circuitry thereof a "digital" device such as a NAND gate being used in a "gated linear" mode of operation, a linear, voltage-to-current converter used to convert the output voltage of the "digital" device into a charging current, a capacitor which integrates the charging current thereby converting an amplitude into a time interval and a voltage-sensitive switch. As a result thereof the mulltivibrator of this invention requires only one voltage supply and the useable sweep output voltage is a very large fraction of the supply voltage.
Inventors
- 👤 Stephen R. Troy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:03
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/52; H03K4/83; H03K4/84
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
129 words
A multivibrator compising a "digital" device having first and second inputs and an output, means electrically connected to said "digital" device for accepting a control voltage and directing said control voltage to said first input of said "digital" device, a feedback circuit electrically connected between said first input and said output of said "digital" device, means electrically connected to said output of said "digital" device for converting said "digital" device output voltage into a current, a capacitor electrically connected to said voltage converting means, a DC source electrically connected to said voltage converting means, and a voltage sensitive switching means electrically connected between said capacitor and said second input of said "digital" device whereby said multivibrator is capable of extremely high-speed operation and producing an exceptionally linear sweep waveform.
Claim 2
Dependent Claim
129 words
A multivibrator compising a "digital" device having first and second inputs and an output, means electrically connected to said "digital" device for accepting a control voltage and directing said control voltage to said first input of said "digital" device, a feedback circuit electrically connected between said first input and said output of said "digital" device, means electrically connected to said output of said "digital" device for converting said "digital" device output voltage into a current, a capacitor electrically connected to said voltage converting means, a DC source electrically connected to said voltage converting means, and a voltage sensitive switching means electrically connected between said capacitor and said second input of said "digital" device whereby said multivibrator is capable of extremely high-speed operation and producing an exceptionally linear sweep waveform.
Claim 3
Dependent Claim
15 words
A multivibrator as defined in claim 1 wherein said "digital" device comprises a NAND gate.
Claim 4
Dependent Claim
15 words
A multivibrator as defined in claim 1 wherein said voltage converting means comprises a transistor.
Claim 5
Dependent Claim
17 words
A multivibrator as defined in claim 1 wherein said voltage sensitive switching means comprises a unijunction transistor.
Claim 6
Dependent Claim
14 words
A multivibrator as defined in claim 1 wherein said feedback circuit includes a resistor.
Claim 7
Dependent Claim
14 words
A multivibrator as defined in claim 1 wherein said feedback circuit includes a diode.
Claim 8
Dependent Claim
24 words
A multivibrator as defined in claim 1 further comprising a resistor electrically connected between said control voltage accepting means and said 37 digital" device.
Claim 9
Dependent Claim
23 words
A multivibrator as defined in claim 1 further comprising a diode electrically connected between said control voltage accepting means and said "digital" device.
Claim 10
Dependent Claim
18 words
A multivibrator as defined in claim 1 wherein said voltage sensitive switching means comprises a programmable unijunction transistor.
Claim 11
Dependent Claim
16 words
A multivibrator as defined in claim 1 wherein said "digital" device comprises a 3-input "digital" device.
Claim 12
Dependent Claim
20 words
A multivibrator as defined in claim 1 further comprising means for applying a separate on/off signal to said "digital" device.
Claim 13
Dependent Claim
18 words
A multivibrator as defined in claim 11 wherein said voltage sensitive switching means comprises a programmable unijunction transistor.
Claim 14
Dependent Claim
15 words
A multivibrator as defined in claim 1 wherein said "digital" device comprises a NOR gate.
Claim 15
Dependent Claim
15 words
A multivibrator as defined in claim 2 wherein said voltage converting means comprises a transistor.
Claim 16
Dependent Claim
17 words
A multivibrator as defined in claim 14 wherein said voltage sensitive switching means comprises a unijunction transistor.
Claim 17
Dependent Claim
14 words
A multivibrator as defined in claim 15 wherein said feedback circuit includes a resistor.
Claim 18
Dependent Claim
23 words
A multivibrator as defined in claim 16 further comprising a resistor electrically connected between said control voltage accepting means and said "digital" device.
Claim 19
Dependent Claim
25 words
A multivibrator as defined in claim 17 further comprising a resistor electrically connected between said output of said NAND gate and said voltage converting transistor.
References Cited (Backward Citations)
US3497725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |