Patent US5329587A successfully refreshed from Google Patents.
Patent US3100877A successfully refreshed from Google Patents.
US3100877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor amplifier with constant input impedance
Assignee: Honeywell Inc
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Filing: 1960-12-27
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Granted: 1963-08-13
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Maupin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:30
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AN AMPLIFIER CIRCUIT HAVING A CONSTANT INPUT IMPEDANCE COMPRISING: A TRANSISTOR HAVING A SEMICONDUCTIVE BODY AND A PLURALITY OF ELECTRODES INCLUDING A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE, SAID BASE ELECTRODE HAVING AN INTERNAL RESISTANCE RB AND SAID EMITTER ELECTRODE HAVING AN INTERNAL RESISTANCE RE; AN EMITTER RESISTOR RE CONNECTING SAID EMITTER ELECTRODE TO A REFERENCE POTENTIAL POINT; A BASE RESISTOR RB CONNECTING SAID BASE ELECTRODE TO A SOURCE OF SIGNAL TO BE AMPLIFIED; IMPEDANCE LOAD MEANS RL; A SOURCE OF POTENTIAL, SAID LOAD MEANS CONNECTING SAID SOURCE OF POTENTIAL TO SAID COLLECTOR ELECTRODE; A FEEDBACK RESISTOR RF CONNECTED BETWEEN SAID COLLECTOR ELECTRODE AND SAID BASE RESISTOR; SAID COMPONENTS BEING PROPORTIONED IN ACCORDANCE WITH THE EQUATION
Claim 2
Dependent Claim
119 words
AN AMPLIFIER CIRCUIT HAVING A CONSTANT INPUT IMPEDANCE COMPRISING: A TRANSISTOR HAVING A SEMICONDUCTIVE BODY AND A PLURALITY OF ELECTRODES INCLUDING A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE, SAID BASE ELECTRODE HAVING AN INTERNAL RESISTANCE RB AND SAID EMITTER ELECTRODE HAVING AN INTERNAL RESISTANCE RE; AN EMITTER RESISTOR RE CONNECTING SAID EMITTER ELECTRODE TO A REFERENCE POTENTIAL POINT; A BASE RESISTOR RB CONNECTING SAID BASE ELECTRODE TO A SOURCE OF SIGNAL TO BE AMPLIFIED; IMPEDANCE LOAD MEANS RL; A SOURCE OF POTENTIAL, SAID LOAD MEANS CONNECTING SAID SOURCE OF POTENTIAL TO SAID COLLECTOR ELECTRODE; A FEEDBACK RESISTOR RF CONNECTED BETWEEN SAID COLLECTOR ELECTRODE AND SAID BASE RESISTOR; SAID COMPONENTS BEING PROPORTIONED IN ACCORDANCE WITH THE EQUATION
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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |