US3114872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant current source
Assignee: General Electric Co
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Filing: 1961-12-29
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Granted: 1963-12-17
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Gerard A Allard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:08
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A CURRENT SOURCE FOR SUPPLYING A CONTROLLED VALUE OF ELECTRICAL CURRENT FLOW TO A LOAD, COMPRISING, A VOLTAGE SOURCE HAVING FIRST AND SECOND TERMINALS, FIRST AND SECOND SEMICONDUCTORS EACH HAVING AN INPUT ELECTRODE AND TWO OUTPUT ELECTRODES, A FIRST CONSTANT VOLTAGE DEVICE CONNECTED BETWEEN THE INPUT ELECTRODE OF SAID FIRST SEMICONDUCTOR AND THE FIRST TERMINAL OF SAID VOLTAGE SOURCE, A FIRST RESISTANCE CONNECTED BETWEEN ONE OF THE OUTPUT ELECTRODES OF SAID FIRST SEMICONDUCTOR AND THE FIRST TERMINAL OF SAID VOLTAGE SOURCE, CIRCUIT MEANS CONNECTING THE OTHER OUTPUT ELECTRODE OF SAID FIRST SEMICONDUCTOR TO THE INPUT ELECTRODE OF SAID SECOND SEMICONDUCTOR, AN INTERMEDIATE TERMINAL, A SECOND CONSTANT VOLTAGE DEVICE CONNECTED BETWEEN THE INPUT ELECTRODE OF SAID SECOND SEMICONDUCTOR AND SAID INTERMEDIATE TERMINAL, A SECOND RESISTANCE CONNECTED BETWEEN ONE OF THE OUTPUT ELECTRODES OF SAID SECOND SEMICONDUCTOR AND SAID INTERMEDIATE TERMINAL, AND CIRCUIT MEANS SERIALLY CONNECTING THE SECOND TERMINAL OF SAID VOLTAGE SOURCE AND SAID INTERMEDIATE TERMINAL WITH A LOAD.
Claim 2
Dependent Claim
158 words
A CURRENT SOURCE FOR SUPPLYING A CONTROLLED VALUE OF ELECTRICAL CURRENT FLOW TO A LOAD, COMPRISING, A VOLTAGE SOURCE HAVING FIRST AND SECOND TERMINALS, FIRST AND SECOND SEMICONDUCTORS EACH HAVING AN INPUT ELECTRODE AND TWO OUTPUT ELECTRODES, A FIRST CONSTANT VOLTAGE DEVICE CONNECTED BETWEEN THE INPUT ELECTRODE OF SAID FIRST SEMICONDUCTOR AND THE FIRST TERMINAL OF SAID VOLTAGE SOURCE, A FIRST RESISTANCE CONNECTED BETWEEN ONE OF THE OUTPUT ELECTRODES OF SAID FIRST SEMICONDUCTOR AND THE FIRST TERMINAL OF SAID VOLTAGE SOURCE, CIRCUIT MEANS CONNECTING THE OTHER OUTPUT ELECTRODE OF SAID FIRST SEMICONDUCTOR TO THE INPUT ELECTRODE OF SAID SECOND SEMICONDUCTOR, AN INTERMEDIATE TERMINAL, A SECOND CONSTANT VOLTAGE DEVICE CONNECTED BETWEEN THE INPUT ELECTRODE OF SAID SECOND SEMICONDUCTOR AND SAID INTERMEDIATE TERMINAL, A SECOND RESISTANCE CONNECTED BETWEEN ONE OF THE OUTPUT ELECTRODES OF SAID SECOND SEMICONDUCTOR AND SAID INTERMEDIATE TERMINAL, AND CIRCUIT MEANS SERIALLY CONNECTING THE SECOND TERMINAL OF SAID VOLTAGE SOURCE AND SAID INTERMEDIATE TERMINAL WITH A LOAD.
References Cited (Backward Citations)
GB831800A
Cited
US3007102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |