Patent US3986102A successfully refreshed from Google Patents.
US3986102A
Expired / Lapsed
US
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Low loss stabilized power supply circuit
Assignee: Kokusai Denki Electric Inc
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Filing: 1974-07-02
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Granted: 1976-10-12
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Expires: 1994-07-02
Abstract
Abstract A stabilized power supply circuit using a series control transistor is disclosed, in which the base of the series control transistor is connected to the collector of another transistor of the opposite polarity, and the emitter of the second-mentioned transistor is connected through a resistor to a reference voltage setting diode of an error detecting circuit.
Inventors
- 👤 Takahiko Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:39
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
In a stabilized power supply circuit comprising a series control transistor, an error detecting circuit for detecting variations in the output voltage including a reference voltage setting diode and a voltage dividing circuit connected in parallel with a load, an output of the voltage dividing circuit being compared with the reference voltage, and another transistor of the opposite polarity to said series control transistor, the collector of said another transistor being connected to the base of said series control transistor, the improvement wherein the emitter of said another transistor is connected through a resistor to said reference voltage setting diode.
Claim 2
Dependent Claim
100 words
In a stabilized power supply circuit comprising a series control transistor, an error detecting circuit for detecting variations in the output voltage including a reference voltage setting diode and a voltage dividing circuit connected in parallel with a load, an output of the voltage dividing circuit being compared with the reference voltage, and another transistor of the opposite polarity to said series control transistor, the collector of said another transistor being connected to the base of said series control transistor, the improvement wherein the emitter of said another transistor is connected through a resistor to said reference voltage setting diode.
Claim 3
Dependent Claim
107 words
A low loss stabilized power supply circuit comprising a DC power supply, a first control transistor connected in series to said power supply, an error detecting circuit for detecting variations in the output voltage including a reference voltage setting diode and a voltage dividing circuit connected in parallel with a load, an output of the voltage dividing circuit being compared with the reference voltage, and a second control transistor of the opposite polarity to said first control transistor, said second control transistor having its collector connected to the base of said first control transistor, and its emitter connected to said reference voltage setting diode through a resistor.
Claim 4
Dependent Claim
107 words
A low loss stabilized power supply circuit comprising a DC power supply, a first control transistor connected in series to said power supply, an error detecting circuit for detecting variations in the output voltage including a reference voltage setting diode and a voltage dividing circuit connected in parallel with a load, an output of the voltage dividing circuit being compared with the reference voltage, and a second control transistor of the opposite polarity to said first control transistor, said second control transistor having its collector connected to the base of said first control transistor, and its emitter connected to said reference voltage setting diode through a resistor.
Claim 5
Dependent Claim
30 words
A low loss stabilized power supply circuit according to claim 2, in which said first control transistor has an emitter connected to the negative terminal of said DC power supply.
Claim 6
Dependent Claim
30 words
A low loss stabilized power supply circuit according to claim 2, in which said first control transistor has an emitter connected to the positive terminal of said DC power supply.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |