US3634751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision voltage regulator
Assignee: United States Department of the Navy
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Filing: 1971-02-01
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Granted: 1972-01-11
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Expires: 1991-02-01
Abstract
Abstract A voltage regulator providing a very stable output voltage with respect to time, temperature, and load, by supplying a stable, constant current to a reference diode. The regulator has an operational amplifier, and a plurality of zener diodes coupled thereto.
Inventors
- 👤 Samuel A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:47
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/461; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
A voltage regulator providing a precision reference voltage output, comprising: an operational amplifier providing an output; a supply voltage coupled to said operational amplifier; and a plurality of variable resistive means for providing Variable electrical resistance, and a plurality of constant resistive means for providing constant electrical resistance, coupled to said operational amplifier such that said variable resistive means and said constant resistive means are arranged in a plurality of voltage divider networks; wherein the voltage across at least one of said variable resistive means is a precision reference voltage.
Claim 2
Dependent Claim
90 words
A voltage regulator providing a precision reference voltage output, comprising: an operational amplifier providing an output; a supply voltage coupled to said operational amplifier; and a plurality of variable resistive means for providing Variable electrical resistance, and a plurality of constant resistive means for providing constant electrical resistance, coupled to said operational amplifier such that said variable resistive means and said constant resistive means are arranged in a plurality of voltage divider networks; wherein the voltage across at least one of said variable resistive means is a precision reference voltage.
Claim 3
Dependent Claim
43 words
The regulator of claim 1, wherein a first variable resistive means is coupled between the output and a first input of said operational amplifier, and a first constant resistive means is coupled between the output and a second input of said operational amplifier.
Claim 4
Dependent Claim
33 words
The regulator of claim 2, wherein a second variable resistive means and a second constant resistive means are coupled in combination between said first input and said second input of said operational amplifier.
Claim 5
Dependent Claim
27 words
The regulator of claim 3, wherein said first input is the inverting terminal of said amplifier, and said second input is the noninverting terminal of said amplifier.
Claim 6
Dependent Claim
34 words
The regulator of claim 4, wherein said first variable resistive means and said second variable resistive means are zener diodes, and said first constant resistive means and said second constant resistive means are resistors.
Claim 7
Dependent Claim
47 words
The regulator of claim 5 wherein the resistor end of said combination of said variable and said constant resistive means is coupled to the inverting terminal of said operational amplifier, and the diode end of said combination is coupled to the noninverting terminal of said operational amplifier.
Claim 8
Dependent Claim
14 words
The regulator of claim 6 wherein said zener diodes are temperature compensated zener diodes.
Claim 9
Dependent Claim
20 words
The regulator of claim 7 wherein the voltage across said second variable resistive means is said precision reference voltage output.
References Cited (Backward Citations)
US3387206A
Cited
US3538427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |