US3735152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dc regenerating systems having current source exhibiting positive resistance and having zero crossing v-i characteristic at a reference potential
Assignee: Mitsubishi Electric Corp
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Filing: 1971-05-10
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Granted: 1973-05-22
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Expires: 1991-05-10
Abstract
Abstract A DC regenerating system, comprising a differential amplifier including first and second transistors with their emitter electrodes connected to a common power source of a first polarity, preferably through a resistor, a pair of semiconductor elements, a source of opposite polarity potential connected in common to one electrode of the semiconductor elements preferably through a resistor, means to connect another electrode of one of the semiconductor elements to the juncture between the base electrode of the first transistor and the collector electrode of the second transistor, an input terminal, a capacitor connected between the input terminal and said juncture and an output terminal connected said juncture. The DC regenerating system functions to supply a large current in a limited potential region with respect to a reference potential (usually zero), but decreases its current outside the potential region. The system has a positive resistance at a reference point of the potential and supplies a zero current only at the reference point of the potential.
Inventors
- 👤 M Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:39
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/003
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
126 words
A DC regenerating system comprising: a capacitor, one terminal of which receives input signals to said system; a source of reference potential; a source of current coupled to the other terminal of said capacitor, said current source including means coupled to said reference potential source for supplying a large current in a given limited potential region with respect to said reference potential, and for supplying a minimum current outside said potential region, said current source having a positive resistance at said reference potential, and having a V-I characteristic zero crossing only at said reference potential; and an output terminal coupled to the juncture of said source of current and said other terminal of said capacitor and serving as an output terminal of the DC regenerating system.
Claim 2
Dependent Claim
126 words
A DC regenerating system comprising: a capacitor, one terminal of which receives input signals to said system; a source of reference potential; a source of current coupled to the other terminal of said capacitor, said current source including means coupled to said reference potential source for supplying a large current in a given limited potential region with respect to said reference potential, and for supplying a minimum current outside said potential region, said current source having a positive resistance at said reference potential, and having a V-I characteristic zero crossing only at said reference potential; and an output terminal coupled to the juncture of said source of current and said other terminal of said capacitor and serving as an output terminal of the DC regenerating system.
Claim 3
Dependent Claim
164 words
A DC regenerating circuit comprising: a first differential amplifier including first and second transistors of a first conductivity type; means for connecting the emitter electrodes of said first and second transistors to a common first power source of a first polarity; a second differential amplifier including third and fourth transistors of an opposite conductivity type to said first conductivity type; means connecting the emitter electrodes of said third and fourth transistors to a common second power source of an opposite polarity to said first polarity; an input terminal; means coupling the collector electrodes of said second and fourth transistors together, and for coupling the base electrode of said first transistor to the juncture between the collectors of said second and fourth transistors; a capacitor coupled between said input terminal and said juncture between the collector electrodes of said second and fourth transistors and the base electrode of said first transistor; and an output terminal connected to said juncture for providing a DC regenerated output.
Claim 4
Dependent Claim
164 words
A DC regenerating circuit comprising: a first differential amplifier including first and second transistors of a first conductivity type; means for connecting the emitter electrodes of said first and second transistors to a common first power source of a first polarity; a second differential amplifier including third and fourth transistors of an opposite conductivity type to said first conductivity type; means connecting the emitter electrodes of said third and fourth transistors to a common second power source of an opposite polarity to said first polarity; an input terminal; means coupling the collector electrodes of said second and fourth transistors together, and for coupling the base electrode of said first transistor to the juncture between the collectors of said second and fourth transistors; a capacitor coupled between said input terminal and said juncture between the collector electrodes of said second and fourth transistors and the base electrode of said first transistor; and an output terminal connected to said juncture for providing a DC regenerated output.
Claim 5
Dependent Claim
15 words
The DC regenerating circuit according to claim 2 wherein said power sources are voltage sources.
Claim 6
Dependent Claim
44 words
The DC regenerating circuit according to claim 2 wherein said first and second transistors are NPN transistors, said third and fourth transistors are PNP transistors, said first power source is a negative voltage source and said second power source is a positive voltage source.
Claim 7
Dependent Claim
52 words
The DC regenerating system according to claim 2 comprising a resistor coupling the collector electrode of said first transistor and the base electrode of said third transistor to another power source of the same polarity as said second power source, said another source having a lower output magnitude than said second source.
Claim 8
Dependent Claim
58 words
The DC regenerating circuit according to claim 2 comprising a pair of diodes connected in parallel opposition coupling the collector electrode of said first transistor and the base electrode of said third transistor to another power source of the same polarity as said second power source, said another source having a lower output magnitude than said second source.
Claim 9
Dependent Claim
22 words
The DC regenerating circuit according to claim 2 comprising a resistor connected between the emitter electrodes of said first and second transistors.
Claim 10
Dependent Claim
135 words
A DC regenerating system comprising: first and second transistors of a first conductivity type; means for connecting the emitter electrodes of said first and second transistors to a common first power source of a first polarity; first and second diodes; means for connecting first electrodes of both of said diodes to a common second power source of an opposite polarity to said first polarity; means for coupling the other electrode of said first diode to a given potential; an input terminal; means coupling together the other electrode of said second diode, the collector electrode of said second transistor and the base electrode of said first transistor to thereby form a juncture; a capacitor connected between said input terminal and said juncture; and an output terminal connected to said juncture for providing a DC regenerated output.
Claim 11
Dependent Claim
135 words
A DC regenerating system comprising: first and second transistors of a first conductivity type; means for connecting the emitter electrodes of said first and second transistors to a common first power source of a first polarity; first and second diodes; means for connecting first electrodes of both of said diodes to a common second power source of an opposite polarity to said first polarity; means for coupling the other electrode of said first diode to a given potential; an input terminal; means coupling together the other electrode of said second diode, the collector electrode of said second transistor and the base electrode of said first transistor to thereby form a juncture; a capacitor connected between said input terminal and said juncture; and an output terminal connected to said juncture for providing a DC regenerated output.
Claim 12
Dependent Claim
15 words
A DC regenerating system according to claim 8 wherein said power sources are voltage sources.
Claim 13
Dependent Claim
46 words
A DC regenerating system according to claim 8 wherein said first and second transistors are NPN transistors, said first power source is a negative voltage source, said second power source is a positive voltage source and said first electrodes of said diodes are their anode electrodes.
Claim 14
Dependent Claim
22 words
The DC regenerating circuit according to claim 8 comprising a resistor connected between the emitter electrodes of said first and second transistors.
Claim 15
Dependent Claim
28 words
The DC regenerating circuit according to claim 8 comprising a pair of diodes connected in parallel opposition connected between the emitter electrodes of said first and second transistors.
Claim 16
Dependent Claim
15 words
The DC regenerating system according to claim 8 wherein said given potential is ground potential.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |