US3381203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A-c to d-c converter
Assignee: Collins Radio Co
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Filing: 1966-08-12
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Granted: 1968-04-30
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Expires: 1986-08-12
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:12
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/14; H03D1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
AN A-C TO D-C CONVERTER COMPRISING: A RECTIFYING STAGE INCLUDING A FIRST TRANSISTOR HAVING COLLECTOR-ELECTRODE MEANS, EMITTER ELECTRODE MEANS, BASE ELECTRODE MEANS AND, WHEN BIASED, HAVING A VOLTAGE DROP ACROSS THE PN JUNCTION OF SAID BASE AND EMITTER ELECTRODES; INPUT SIGNAL MEANS FOR SUPPLYING AN INPUT SIGNAL TO BE RECTIFIED; HIGH GAIN AMPLIFYING MEANS RESPONSIVE TO SAID INPUT SIGNAL TO PRODUCE AN AMPLIFIED SIGNAL; DETECTOR MEANS RESPONSIVE TO SAID AMPLIFIED SIGNAL TO PRODUCE A TRAIN OF PULSES WHOSE ENERGY CONTENT AT LOW INPUT SIGNAL LEVELS IS A FUNCTION OF THE LEVEL OF SAID LOW LEVEL INPUT SIGNALS; MEANS FOR INTEGRATING SAID TRAIN OF PULSES TO PRODUCE A D-C BIASING SIGNAL OF A MAGNITUDE WHICH IS A PREDETERMINED FUNCTION OF THE LEVEL OF SAID LOW LEVEL INPUT SIGNALS AND WHOSE MAXIMUM VALUE IS SUBSTANTIALLY EQUAL TO SAID VOLTAGE DROP ACROSS SAID PN JUNCTION; MEANS FOR SUPPLYING SAID D-C SIGNAL TO SAID BASE ELECTRODE OF SAID FIRST TRANSISTOR; AND MEANS FOR SUPPLYING SAID INPUT SIGNAL TO SAID BASE ELECTRODE MEANS.
Claim 2
Dependent Claim
168 words
AN A-C TO D-C CONVERTER COMPRISING: A RECTIFYING STAGE INCLUDING A FIRST TRANSISTOR HAVING COLLECTOR-ELECTRODE MEANS, EMITTER ELECTRODE MEANS, BASE ELECTRODE MEANS AND, WHEN BIASED, HAVING A VOLTAGE DROP ACROSS THE PN JUNCTION OF SAID BASE AND EMITTER ELECTRODES; INPUT SIGNAL MEANS FOR SUPPLYING AN INPUT SIGNAL TO BE RECTIFIED; HIGH GAIN AMPLIFYING MEANS RESPONSIVE TO SAID INPUT SIGNAL TO PRODUCE AN AMPLIFIED SIGNAL; DETECTOR MEANS RESPONSIVE TO SAID AMPLIFIED SIGNAL TO PRODUCE A TRAIN OF PULSES WHOSE ENERGY CONTENT AT LOW INPUT SIGNAL LEVELS IS A FUNCTION OF THE LEVEL OF SAID LOW LEVEL INPUT SIGNALS; MEANS FOR INTEGRATING SAID TRAIN OF PULSES TO PRODUCE A D-C BIASING SIGNAL OF A MAGNITUDE WHICH IS A PREDETERMINED FUNCTION OF THE LEVEL OF SAID LOW LEVEL INPUT SIGNALS AND WHOSE MAXIMUM VALUE IS SUBSTANTIALLY EQUAL TO SAID VOLTAGE DROP ACROSS SAID PN JUNCTION; MEANS FOR SUPPLYING SAID D-C SIGNAL TO SAID BASE ELECTRODE OF SAID FIRST TRANSISTOR; AND MEANS FOR SUPPLYING SAID INPUT SIGNAL TO SAID BASE ELECTRODE MEANS.
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |