US3828241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated voltage supply circuit which compensates for temperature and input voltage variations
Assignee: Sony Corp
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Filing: 1973-10-10
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Granted: 1974-08-06
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Expires: 1993-10-10
Abstract
Abstract A regulated voltage supply circuit including first, second and third transistors of one conductivity type and a fourth transistor of the opposite conductivity type connected in a specific configuration. The emitter-collector path of the second transistor and the emitter-collector path of the third transistor are connected in series between the first and second voltage terminals of a voltage supply source. The emitter-collector path of the first transistor is connected between the first and second voltage terminals in parallel with the series connected emittercollector paths of the second and third transistors. The base and collector electrodes of the first transistor are connected to the emitter and base electrodes of the second transistor respectively and the first and second transistors form a first degenerative feedback circuit for the regulation of the supply voltage. The base electrodes of the third and fourth transistors are connected to each other and the collector and emitter electrodes of the fourth transistor are connected to the emitter electrode of the second transistor and the second voltage terminal respectively. The third and fourth transistors form a second degenerative feedback circuit for the regulation of the supply voltage and a desirably regulated or stabilized DC voltage is obtained from the collector of the second transistor.
Inventors
- 👤 T Horichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:21
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/22; G05F3/222; G05F3/227; Y; Y10; Y10S; Y10S323/00; Y10S323/907
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
227 words
A regulated voltage supply circuit comprising: A. first, second and third transistors of one conductivity type each having base, emitter and collector electrodes; B. a fourth transistor of the opposite conductivity type having base, emitter and collector electrodes; C. a voltage supply source having first and second voltage terminals; D. circuit means for connecting the emitter and collector electrodes of said first transistor to said first and second voltage terminals respectively with a first impedance between the collector electrode and said second voltage terminal; E. circuit means for connecting the emitter electrode of said second transistor to said first voltage terminal through a second impedance and also to the base electrode of said first transistor; F. circuit means for connecting the base electrode of said second transistor to the collector electrode of said first transistor; G. circuit means for connecting the emitter and collector electrodes of said third transistor to the collector electrode of said second transistor and said second voltage terminal respectively; H. circuit means for connecting the base electrodes of said third and fourth transistors to each other; I. circuit means for connecting the collector and emitter electrodes of said fourth transistor to the emitter electrode of said second transistor and said second voltage terminal respectively; and J. an output terminal, and means connecting said output terminal to the collector electrode of said second transistor.
Claim 2
Dependent Claim
227 words
A regulated voltage supply circuit comprising: A. first, second and third transistors of one conductivity type each having base, emitter and collector electrodes; B. a fourth transistor of the opposite conductivity type having base, emitter and collector electrodes; C. a voltage supply source having first and second voltage terminals; D. circuit means for connecting the emitter and collector electrodes of said first transistor to said first and second voltage terminals respectively with a first impedance between the collector electrode and said second voltage terminal; E. circuit means for connecting the emitter electrode of said second transistor to said first voltage terminal through a second impedance and also to the base electrode of said first transistor; F. circuit means for connecting the base electrode of said second transistor to the collector electrode of said first transistor; G. circuit means for connecting the emitter and collector electrodes of said third transistor to the collector electrode of said second transistor and said second voltage terminal respectively; H. circuit means for connecting the base electrodes of said third and fourth transistors to each other; I. circuit means for connecting the collector and emitter electrodes of said fourth transistor to the emitter electrode of said second transistor and said second voltage terminal respectively; and J. an output terminal, and means connecting said output terminal to the collector electrode of said second transistor.
Claim 3
Dependent Claim
21 words
A regulated voltage supply circuit according to claim 1, wherein said first and second impedances are first and second resistors respectively.
Claim 4
Dependent Claim
37 words
A regulated voltage supply circuit according to claim 1, further comprising a number of forward biased PN junctions between the base electrodes of said third and fourth transistors and in which said number is a positive integer.
Claim 5
Dependent Claim
39 words
A regulated voltage supply circuit according to claim 1, further comprising a number of forward biased PN junctions between said output terminal and the emitter electrode of said third transistor, and in which said number is a positive integer.
Claim 6
Dependent Claim
40 words
A regulated voltage supply circuit according to claim 1, further comprising a number of forward biased PN junctions between the emitter electrode of said fourth transistor and said second voltage terminal, and in which said number is a positive integer.
Claim 7
Dependent Claim
71 words
A regulated voltage supply circuit according to claim 1, wherein said means connecting the output terminal to the collector electrode of said second transistor includes a fifth transistor having base, emitter and collector electrodes, said fifth transistor being connected in an emitter follower configuration with its base electrode connected to the collector electrode of said second transistor and said output terminal being connected with the emitter electrode of said fifth transistor.
Claim 8
Dependent Claim
63 words
A regulated voltage supply circuit according to claim 1, further comprising a third impedance interposed between said first impedance and said second voltage terminal, and a plurality of series-connected diodes connected between first voltage terminal and a junction between said first and third impedances for stabilizing the collector current of said transistor with respect to variations in the voltage at said supply source.
Claim 9
Dependent Claim
113 words
A regulated voltage supply circuit according to claim 1, further comprising fifth and sixth transistors each having base, emitter and collector electrodes, a third impedance, circuit means connecting the collector and emitter electRodes of said fifth transistor to said collector electrode of said first transistor and to said first impedance, respectively, circuit means connecting said emitter and base electrodes of said fifth transistor to said base and collector electrodes, respectively, of said sixth transistor, and circuit means connecting said collector and emitter electrodes of said sixth transistor to said first and second voltage terminals, respectively, with said third impedance interposed between said first voltage terminal and said collector electrode of the sixth 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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |