US3231766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Square root output circuit utilizing a voltage sensitive capacitive diode
Assignee: Barnes Engineering Co
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Filing: 1965-01-21
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Granted: 1966-01-25
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Mark G Lowenstein
- 👤 Jr John R Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:09
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A CIRCUIT FOR THE PRODUCTION OF AN OUTPUT SIGNAL CORRESPONDING IN VOLTAGE APPROXIMATELY TO THE SQUARE ROOT OF AN INPUT SIGNAL COMPRISING IN COMBINATION, (A) TWO CAPACITORS IN SERIES, ONE OF THEM BEING A VOLTAGE SENSITIVE CAPACITOR OF THE REVERSE BIASED, ABRUPT P-N JUNCTION TYPE, AND THE OTHER AN ORDINARY CAPACITOR, THE LATTER BEING OF VERY MUCH HIGHER CAPACITANCE THAN THE FORMER, (B) A SOURCE OF ALTERNATING CURRENT POTENTIAL HAVING AN OPERATING FREQUENCY IN A PREDETERMINED RANGE, SAID SOURCE HAVING AN OUTPUT CIRCUIT ACROSS WHICH THE TWO CAPACITORS ARE CONNECTED, THE OUTPUT CIRCUIT BEING FREE FROM INDUCTANCES OF A MAGNITUDE EFFECTIVELY TUNABLE BY THE VOLTAGE SENSITIVE CAPACITOR AT THE OPERATING FREQUENCY OF THE ALTERNATING POTENTIAL SOURCE, (C) MEANS FOR INTRODUCING AN INPUT SIGNAL AND REVERSE D.C. BIAS AT THE JUNCTION OF THE TWO CAPACITORS, AND (D) AN OUTPUT CIRCUIT ACROSS ONE CAPACITOR.
Claim 2
Dependent Claim
142 words
A CIRCUIT FOR THE PRODUCTION OF AN OUTPUT SIGNAL CORRESPONDING IN VOLTAGE APPROXIMATELY TO THE SQUARE ROOT OF AN INPUT SIGNAL COMPRISING IN COMBINATION, (A) TWO CAPACITORS IN SERIES, ONE OF THEM BEING A VOLTAGE SENSITIVE CAPACITOR OF THE REVERSE BIASED, ABRUPT P-N JUNCTION TYPE, AND THE OTHER AN ORDINARY CAPACITOR, THE LATTER BEING OF VERY MUCH HIGHER CAPACITANCE THAN THE FORMER, (B) A SOURCE OF ALTERNATING CURRENT POTENTIAL HAVING AN OPERATING FREQUENCY IN A PREDETERMINED RANGE, SAID SOURCE HAVING AN OUTPUT CIRCUIT ACROSS WHICH THE TWO CAPACITORS ARE CONNECTED, THE OUTPUT CIRCUIT BEING FREE FROM INDUCTANCES OF A MAGNITUDE EFFECTIVELY TUNABLE BY THE VOLTAGE SENSITIVE CAPACITOR AT THE OPERATING FREQUENCY OF THE ALTERNATING POTENTIAL SOURCE, (C) MEANS FOR INTRODUCING AN INPUT SIGNAL AND REVERSE D.C. BIAS AT THE JUNCTION OF THE TWO CAPACITORS, AND (D) AN OUTPUT CIRCUIT ACROSS ONE CAPACITOR.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |