Patent US3201682A successfully refreshed from Google Patents.
US3201682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage stabilization using a plurality of transistors and a zener diode
Assignee: US Philips Corp
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Filing: 1960-09-23
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Granted: 1965-08-17
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Expires: 1980-09-23
Abstract
No abstract record available.
Inventors
- 👤 Maurice W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:01
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/59; G05F1/595
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A VOLTAGE STABILIZER CIRCUIT COMPRISING: A DIRECT VOLTAGE SOURCE, A FIRST TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, SAID EMITTER BEING CONNECTED TO ONE TERMINAL OF A LOAD, THE OTHER TERMINAL OF THE LOAD BEING CONNECTED TO ONE TERMINAL OF SAID SOURCE, SAID COLLECTOR BEING CONNECTED TO THE OTHER TERMINAL OF SAID SOURCE THOUGH THE COLLECTOR-EMITTER PATH OF AT LEAST ONE ADDITIONAL TRANSISTOR, SAID SOURCE BIASING THE EMITTER IN THE FORWARD DIRECTION AND THE COLLECTOR IN THE REVERSE DIRECTION, SAID BASE BEING CONNECTED TO SAID OTHER TERMINAL OF SAID SOURCE THROUGH A PLURALITY OF SERIES-CONNECTED RESISTORS EQUAL IN NUMBER TO THE TOTAL NUMBER OF TRANSISTORS, SAID BASE ALSO BEING CONNECTED TO SAID ONE TERMINAL OF THE SOURCE THROUGH A ZENER DIODE, THE BASE ELECTRODE OF EACH ADDITIONAL TRANSISTOR BEING DIRECTLY CONNECTED TO A CORRESPONDING JUNCTION POINT OF THE SERIES-CONNECTED RESISTORS.
Claim 2
Dependent Claim
140 words
A VOLTAGE STABILIZER CIRCUIT COMPRISING: A DIRECT VOLTAGE SOURCE, A FIRST TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, SAID EMITTER BEING CONNECTED TO ONE TERMINAL OF A LOAD, THE OTHER TERMINAL OF THE LOAD BEING CONNECTED TO ONE TERMINAL OF SAID SOURCE, SAID COLLECTOR BEING CONNECTED TO THE OTHER TERMINAL OF SAID SOURCE THOUGH THE COLLECTOR-EMITTER PATH OF AT LEAST ONE ADDITIONAL TRANSISTOR, SAID SOURCE BIASING THE EMITTER IN THE FORWARD DIRECTION AND THE COLLECTOR IN THE REVERSE DIRECTION, SAID BASE BEING CONNECTED TO SAID OTHER TERMINAL OF SAID SOURCE THROUGH A PLURALITY OF SERIES-CONNECTED RESISTORS EQUAL IN NUMBER TO THE TOTAL NUMBER OF TRANSISTORS, SAID BASE ALSO BEING CONNECTED TO SAID ONE TERMINAL OF THE SOURCE THROUGH A ZENER DIODE, THE BASE ELECTRODE OF EACH ADDITIONAL TRANSISTOR BEING DIRECTLY CONNECTED TO A CORRESPONDING JUNCTION POINT OF THE SERIES-CONNECTED RESISTORS.
References Cited (Backward Citations)
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US2999984A
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US2922945A
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US2978630A
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US2915693A
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US3105187A
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |