US3101442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized direct-voltage regulated power supply
Assignee: HP Inc
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Filing: 1959-12-15
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Granted: 1963-08-20
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Expires: 1979-12-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Darbie
- 👤 Charles W Harrison
- 👤 Donald J Tighe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/569; G05F1/573
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A VOLTAGE REGULATING CIRCUIT HAVING IMPROVED INTERNAL POWER DISSIPATION CHARACTERISTICS, SAID CIRCUIT COMPRISING AN INPUT DIRECT-VOLTAGE TERMINAL, A PLURALITY OF VOLTAGE DROPPING RESISTORS CONNECTED IN SERIES THEREWITH, AN OUTPUT LEAD, A MAIN REGULATING TRANSISTOR CONNECTED BETWEEN SAID RESISTORS AND SAID LEAD, A FEEDBACK AMPLIFIER CONNECTED BETWEEN SAID OUTPUT LEAD AND SAID MAIN TRANSISTOR AND CONTROLLING IT TO KEEP THE VOLTAGE ON SAID LEAD CONSTANT AT A SET VALUE, A PLURALITY OF AUXILIARY TRANSISTORS CONNECTED TO VARIABLY BYPASS CURRENT AROUND RESPECTIVE ONES OF SAID RESISTORS, AND MEANS INTERCONNECTING SAID AUXILIARY TRANSISTORS AND SAID MAIN TRANSISTOR TO TURN A FIRST OF SAID AUXILIARY TRANSISTORS ON WHEN THE VOLTAGE DROP ACROSS SAID MAIN TRANSISTOR DROPS BELOW A GIVEN VALUE AND TO TURN A SECOND OF SAID AUXILIARY TRANSISTORS ON WHEN THE VOLTAGE
Claim 2
Dependent Claim
129 words
A VOLTAGE REGULATING CIRCUIT HAVING IMPROVED INTERNAL POWER DISSIPATION CHARACTERISTICS, SAID CIRCUIT COMPRISING AN INPUT DIRECT-VOLTAGE TERMINAL, A PLURALITY OF VOLTAGE DROPPING RESISTORS CONNECTED IN SERIES THEREWITH, AN OUTPUT LEAD, A MAIN REGULATING TRANSISTOR CONNECTED BETWEEN SAID RESISTORS AND SAID LEAD, A FEEDBACK AMPLIFIER CONNECTED BETWEEN SAID OUTPUT LEAD AND SAID MAIN TRANSISTOR AND CONTROLLING IT TO KEEP THE VOLTAGE ON SAID LEAD CONSTANT AT A SET VALUE, A PLURALITY OF AUXILIARY TRANSISTORS CONNECTED TO VARIABLY BYPASS CURRENT AROUND RESPECTIVE ONES OF SAID RESISTORS, AND MEANS INTERCONNECTING SAID AUXILIARY TRANSISTORS AND SAID MAIN TRANSISTOR TO TURN A FIRST OF SAID AUXILIARY TRANSISTORS ON WHEN THE VOLTAGE DROP ACROSS SAID MAIN TRANSISTOR DROPS BELOW A GIVEN VALUE AND TO TURN A SECOND OF SAID AUXILIARY TRANSISTORS ON WHEN THE VOLTAGE
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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |