US3916333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential amplifier
Assignee: Individual
•
Filing: 1973-04-27
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Granted: 1975-10-28
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Expires: 1993-04-27
Abstract
Abstract An amplifier with desirable direct potential translating properties includes an emitter-coupled differential amplifier configuration using first and second composite transistors. Each composite transistor is of quasi-complementary Lin configuration comprising an input transistor and an after-cascaded transistor of complementary conductivity type. Output signal is obtained from the different amplifier by means of common-emitter amplifier output transistor having its base electrode connected to the base electrode of one of the after-cascaded transistors.
Inventors
- 👤 Borys Zuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:32
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/053; B05B5/0533; H; H03; H03F; H03F1/00; H03F1/32; H03F1/3211; B05B5/16; B05B5/1608
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
300 words
An amplifier comprising: first and second transistors, each being of a first conductivity type, each having an input electrode and a common electrode and an output electrode; means for supplying bias potential to each of the input electrodes of said first and said second transistors and an input signal between the input electrodes of said first and said second transistors; means coupling the common electrodes of said first and said second transistors to each other for signal; third and fourth and fifth transistors, being of a second conductivity type complementary to said first conductivity type, each having a common electrode connected to a point of reference potential and each having an output electrode, said third and said fifth transistors each having an input electrode direct coupled from said first transistor output electrode, said fourth transistor having an input electrode direct coupled from said second transistor output electrode; a first direct current conductive path having a first end connected to the output electrode of said third transistor and having a second end connected to the common electrode of said first transistor; a second direct current conductive path having a first end connected to the output electrode of said fourth transistor and having a second end connected to the common electrode of said second transistor; means connected to the second end of said first direct current conductive path and to the second end of said second direct current conductive path for supplying quiescent currents to said first transistor common electrode, to said second transistor common electorde, to said third transistor output electrode, and to said fourth transistor output electrode; and means for connecting said fifth transistor output electrode to receive an operating potential and for utilizing the output signal provided at said fifth transistor output electrode in response to said input signal.
Claim 2
Dependent Claim
300 words
An amplifier comprising: first and second transistors, each being of a first conductivity type, each having an input electrode and a common electrode and an output electrode; means for supplying bias potential to each of the input electrodes of said first and said second transistors and an input signal between the input electrodes of said first and said second transistors; means coupling the common electrodes of said first and said second transistors to each other for signal; third and fourth and fifth transistors, being of a second conductivity type complementary to said first conductivity type, each having a common electrode connected to a point of reference potential and each having an output electrode, said third and said fifth transistors each having an input electrode direct coupled from said first transistor output electrode, said fourth transistor having an input electrode direct coupled from said second transistor output electrode; a first direct current conductive path having a first end connected to the output electrode of said third transistor and having a second end connected to the common electrode of said first transistor; a second direct current conductive path having a first end connected to the output electrode of said fourth transistor and having a second end connected to the common electrode of said second transistor; means connected to the second end of said first direct current conductive path and to the second end of said second direct current conductive path for supplying quiescent currents to said first transistor common electrode, to said second transistor common electorde, to said third transistor output electrode, and to said fourth transistor output electrode; and means for connecting said fifth transistor output electrode to receive an operating potential and for utilizing the output signal provided at said fifth transistor output electrode in response to said input signal.
Claim 3
Dependent Claim
46 words
An amplifier as claimed in claim 1 wherein: said first transistor output electrode is directly connected to the joined input electrodes of said third and said fifth transistor; and said second transistor output electrode is directly connected to the joined input electrodes of said fourth transistor.
Claim 4
Dependent Claim
72 words
An amplifier as claimed in claim 1 having a sixth transistor, being of said second conductivity type, having an input electrode direct coupled from said second transistor output electrode, having a common electrode connected to said point of reference potential and having an output electrode means for connecting said sixth transistor output electrode to receive an operating potential and for utilizing the output signal provided thereat in response to said input signal.
Claim 5
Dependent Claim
33 words
An amplifier as claimed in claim 1 wherein each of the common electrodes of said third, said fourth and said fifth transistors are directly connected to each other and to said reference potential.
Claim 6
Dependent Claim
82 words
An amplifier as claimed in claim 1 wherein: said third and said fifth transistor each have a base-emitter junction between their input and common electrodes and first and second resistive elements connect the commoN electrodes of said third and said fifth transistors respectively to said reference potential, the ratio of the resistances of said first and said second resistive elements being inversely proportional to the ratio of the effective areas of the base-emitter junctions of said third and said fifth transistors, respectively.
Claim 7
Dependent Claim
170 words
An amplifier comprising: first and second composite transistors of the Lin configuration, each including an input transistor and a subsequent transistor respectively of first and of second complementary conductivity types, each of said input and subsequent transistors having input and common and output electrodes, in each Lin configuration the output electrode of the input transistor being coupled to the input electrode of the subsequent transistor and the common electrode of the input transistor being coupled to the output electrode of the subsequent transistor, means connecting said first and said second composite transistors in a differential amplifier configuration including a coupling between the common electrodes of their respective input transistors; an auxiliary transistor having input and common electrodes respectively connected to the input and common electrodes of said subsequent transistor in said first composite transistor, and having an output electrode; a load with a direct current path therethrough; and a source of operating potential to which said auxiliary transistor output electrode is connected via the direct current path through said load.
Claim 8
Dependent Claim
170 words
An amplifier comprising: first and second composite transistors of the Lin configuration, each including an input transistor and a subsequent transistor respectively of first and of second complementary conductivity types, each of said input and subsequent transistors having input and common and output electrodes, in each Lin configuration the output electrode of the input transistor being coupled to the input electrode of the subsequent transistor and the common electrode of the input transistor being coupled to the output electrode of the subsequent transistor, means connecting said first and said second composite transistors in a differential amplifier configuration including a coupling between the common electrodes of their respective input transistors; an auxiliary transistor having input and common electrodes respectively connected to the input and common electrodes of said subsequent transistor in said first composite transistor, and having an output electrode; a load with a direct current path therethrough; and a source of operating potential to which said auxiliary transistor output electrode is connected via the direct current path through said load.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |