Patent US3088067A successfully refreshed from Google Patents.
US3088067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit arrangement, particularly for low-ohmic amplifiers
Assignee: PRAKLA GES fur PRAKTISCHE LAGE
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Filing: 1959-11-16
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Granted: 1963-04-30
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 Sender Friedhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:00
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0082; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A CONTROL CIRCUIT ARRANGEMENT FOR AMPLIFIERS OPERATING ON THE PRINCIPLE OF VOLTAGE DIVIDER REGULATION, COMPRISING IN COMBINATION: A FIXED RESISTOR, AT LEAST ONE TRANSISTOR HAVING A BASE AND HAVING A COLLECTOR-EMITTER CIRCUIT FREE FROM D.C. OFFSET FORMING A VARIABLE RESISTOR CONNECTED IN SERIES WITH THE SAID FIXED RESISTOR THE INPUT ALTERNATING VOLTAGE TO BE REGULATED BEING APPLIED ACROSS THE SAID TWO RESISTORS CONNECTED IN SERIES, THE REGULATED OUTPUT ALTERNATING VOLTAGE BEING DERIVED ACROSS THE SAID VARIABLE RESISTOR AND BEING APPLIED TO THE SAID BASE, THE AMPLITUDE OF THE ALTERNATING VOLTAGE SUPPLIED TO SAID COLLECTOR-EMITTER CIRCUIT BEING SMALLER THAN THE EMITTER-BASE CONDUCTION THRESHOLD VOLTAGE OF SAID TRANSISTOR.
Claim 2
Dependent Claim
106 words
A CONTROL CIRCUIT ARRANGEMENT FOR AMPLIFIERS OPERATING ON THE PRINCIPLE OF VOLTAGE DIVIDER REGULATION, COMPRISING IN COMBINATION: A FIXED RESISTOR, AT LEAST ONE TRANSISTOR HAVING A BASE AND HAVING A COLLECTOR-EMITTER CIRCUIT FREE FROM D.C. OFFSET FORMING A VARIABLE RESISTOR CONNECTED IN SERIES WITH THE SAID FIXED RESISTOR THE INPUT ALTERNATING VOLTAGE TO BE REGULATED BEING APPLIED ACROSS THE SAID TWO RESISTORS CONNECTED IN SERIES, THE REGULATED OUTPUT ALTERNATING VOLTAGE BEING DERIVED ACROSS THE SAID VARIABLE RESISTOR AND BEING APPLIED TO THE SAID BASE, THE AMPLITUDE OF THE ALTERNATING VOLTAGE SUPPLIED TO SAID COLLECTOR-EMITTER CIRCUIT BEING SMALLER THAN THE EMITTER-BASE CONDUCTION THRESHOLD VOLTAGE OF SAID TRANSISTOR.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |