US5121079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driven-common electronic amplifier
Assignee: Individual
•
Filing: 1991-02-12
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Granted: 1992-06-09
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Expires: 2011-02-12
Abstract
Abstract Sampled input, common mode driven, differential amplifier. Both inputs to a differential amplifier are sampled with a high input impedance amplifier. These signals are then summed and used to drive a buffer amplifier. The output of the buffer amplifier then drives the floating common node of a floating power supply. The floating power supply powers the main differential amplifier.
Inventors
- 👤 Marvin R. Dargatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:11
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45479
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A driven-common electronic amplifying circuit comprising: a main amplifying circuit of standard differential configuration, and a common-mode amplifying circuit consisting of two voltage-following circuits, a resistor-summing network circuit, and a buffer amplifying circuit, and a floating power supply circuit connected to and powering said main amplifying circuit, and the output of said common-mode amplifying circuit connected to and driving the common-reference lead of said floating power supply circuit, whereby said main amplifying circuit is prevented from saturating and effective input dynamic range is increased.
Claim 2
Dependent Claim
84 words
A driven-common electronic amplifying circuit comprising: a main amplifying circuit of standard differential configuration, and a common-mode amplifying circuit consisting of two voltage-following circuits, a resistor-summing network circuit, and a buffer amplifying circuit, and a floating power supply circuit connected to and powering said main amplifying circuit, and the output of said common-mode amplifying circuit connected to and driving the common-reference lead of said floating power supply circuit, whereby said main amplifying circuit is prevented from saturating and effective input dynamic range is increased.
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) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |