Patent US5068624A successfully refreshed from Google Patents.
US5068624A
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US
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Amplifier
Assignee: Kokusai Denki Electric Inc
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Filing: 1990-09-10
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Granted: 1991-11-26
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Expires: 2010-09-10
Abstract
Abstract In an amplifier using at least two transistors are amplifying elements, the bases (or gates) and the collectors (or drains) of the transistors are commonly connected. A first impedance element is connected between the bases (or gates) and the collectors (or drains). A second impedance element is connected between an emitter (or source) of each transistor and a ground. A third impedance element is connected between the emitters (or sources).
Inventors
- 👤 Yoshio Taneichi
- 👤 Yukinari Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:23
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/60; H03F3/20; H03F3/21; H03F3/211; H03F3/34; H03F3/343
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
An amplifier using at least two transistors as amplifying elements, wherein first input electrodes and first output electrodes of said transistors are commonly connected, a first impedance element is connected between said first input electrodes and said first output electrodes, a second impedance element is connected between a second output electrode of each transistor and ground, and a third impedance element is connected between said second output electrodes.
Claim 2
Dependent Claim
68 words
An amplifier using at least two transistors as amplifying elements, wherein first input electrodes and first output electrodes of said transistors are commonly connected, a first impedance element is connected between said first input electrodes and said first output electrodes, a second impedance element is connected between a second output electrode of each transistor and ground, and a third impedance element is connected between said second output electrodes.
Claim 3
Dependent Claim
35 words
An amplifier according to claim 1, wherein said first input electrode is a base of a bipolar transistor, said first output electrode is a collector thereof, and said second output electrode is an emitter thereof.
Claim 4
Dependent Claim
36 words
An amplifier according to claim 1, wherein said first input electrode is a gate of a field effect transistor, said first output electrode is a drain thereof, and said second output electrode is a source thereof.
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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |