US3555290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Second-highest redundant voltage selector
Assignee: Individual
•
Filing: 1969-05-29
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Granted: 1971-01-12
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Expires: 1989-05-29
Abstract
Abstract A second-highest redundant voltage selector which continually compares the voltage outputs of three indentical electrical units and continuously selects the preferred voltage to drive a following electrical state. The selection of the second-highest of three input voltages is accomplished by the use of three twoinput comparators. The output of each comparator indicates which of the two voltages connected to it is the higher and which is the lower. The outputs of the comparators actuate switching circuitry which continually selects the second-highest of the three input voltages. Malfunction of the invention will never produce a faulty output voltage. Regardless of any malfunction of the invention, the preferred voltage will be within acceptable limits if the three redundant input voltages are within acceptable limits.
Inventors
- 👤 Walter Ellermeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:49
CPC Classifications
G; G05; G05B; G05B9/00; G05B9/02; G05B9/03; G01; G01R; G01R19/00; G01R19/0038
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
138 words
A system for monitoring the relative magnitude of first, second and third redundant voltages comprising: a. first, second and third converter means; b. each of said converter means being responsive to one of said redundant voltages to produce a DC voltage proportional to said one redundant voltage; c. means responsive to the first, second and third DC voltages thereby produced to continually compare the magnitude of said DC voltages and to provide an output voltage which indicates which of the said redundant voltages has the second-highest magnitude; d. said means including switch means operatively connected between said three redundant voltages and an electrical unit to be driven by one of said redundant voltages; and e. said switch means being responsive to said output voltage to thereby couple the redundant voltage having the second-highest magnitude to said electrical unit.
Claim 2
Independent Claim
138 words
A system for monitoring the relative magnitude of first, second and third redundant voltages comprising: a. first, second and third converter means; b. each of said converter means being responsive to one of said redundant voltages to produce a DC voltage proportional to said one redundant voltage; c. means responsive to the first, second and third DC voltages thereby produced to continually compare the magnitude of said DC voltages and to provide an output voltage which indicates which of the said redundant voltages has the second-highest magnitude; d. said means including switch means operatively connected between said three redundant voltages and an electrical unit to be driven by one of said redundant voltages; and e. said switch means being responsive to said output voltage to thereby couple the redundant voltage having the second-highest magnitude to said electrical unit.
Claim 3
Dependent Claim
70 words
The system of claim 1 wherein said means responsive to said DC voltages includes: a. three comparator means, each of said comparator means having applied at the input terminals thereof a different combination of two of the three DC voltages; and b. each of said comparator means being operable to indicate which of the two DC voltages applied to it has the highest magnitude and which has the lowest magnitude.
Claim 4
Dependent Claim
57 words
The system of claim 2 wherein each of said switch means includes two electromagnetic relays, each of said relays having a coil connected at one end thereof to the output terminal of the same comparator means and connected at the other end thereof to the output terminal of a different one of the other two comparator means.
Claim 5
Dependent Claim
34 words
The system of claim 1 wherein said means responsive to said DC voltages further includes bridge rectifier means connected between each of said coils and the output terminals of two of said three comparators.
Claim 6
Dependent Claim
42 words
The system of claim 1 further including means responsive to said DC voltages to produce an output voltage indicative of a selectively predetermined percentage difference between any one of the three DC voltages and the sum of the other two DC voltages.
Claim 7
Independent Claim
93 words
A system for monitoring the relative magnitudes of first, second and third redundant voltages comprising: a. means responsive to said redundant voltages to continually compare and to provide an output voltage which indicates which of the said redundant voltages has the second-highest magnitude; b. said means including switch means operatively connected between said redundant voltages and an electrical unit to be driven by one of said redundant voltages; and c. said switch means being responsive to said output voltage to thereby couple the redundant voltage having the second-highest magnitude to said electrical unit.
Claim 8
Independent Claim
93 words
A system for monitoring the relative magnitudes of first, second and third redundant voltages comprising: a. means responsive to said redundant voltages to continually compare and to provide an output voltage which indicates which of the said redundant voltages has the second-highest magnitude; b. said means including switch means operatively connected between said redundant voltages and an electrical unit to be driven by one of said redundant voltages; and c. said switch means being responsive to said output voltage to thereby couple the redundant voltage having the second-highest magnitude to said electrical unit.
Claim 9
Dependent Claim
70 words
The system of claim 6 wherein said means responsive to said output voltage includes: a. three comparator means, each of said comparator means having applied at the input terminals thereof a different combination of two of said three redundant voltage; and b. each of said comparator means being operable to indicate which of the two redundant voltages applied to it has the highest magnitude and which has the lowest magnitude.
Claim 10
Dependent Claim
57 words
The system of claim 7 wherein each of said switch means includes two electromagnetic relays, each of said relays having a coil connected at one end thereof to the output terminal of the same comparator means and connected at the other end thereof to the output terminal of a different one of the other two comparator means.
Claim 11
Dependent Claim
31 words
The system of claim 6 wherein said means responsive to said redundant voltages further includes bridge rectifier means connected between each of said coils and the output terminals of said comparators.
Claim 12
Dependent Claim
40 words
The system of claim 6 further including means responsive to said redundant voltages to produce an output voltage indicative of a selectively predetermined percentage difference between any one of said redundant voltages and the sum of the other two voltages.
Claim 13
Dependent Claim
225 words
A second-highest voltages selector for use with triple redundant voltages comprising: a. three redundant voltages V1, V2, and V3; b. first, second and third comparator means having applied at the input terminals thereof voltages V2C and V1C, V3C and V2C, v1C and V3C, respectively, wherein voltages V1C, V2C and V3C are proportional to voltages V1, V2 and V3, respectively; c. the output terminals of said first and second comparator means being connected by means of equal resistors to a first junction point; d. the output terminals of said second and third comparator means likewise being connected by means of equal resistors to a second junction point; e. first and second absolute value circuit means; value f. said first junction point being connected to the input terminal of said first absolute value circuit; g. said second junction point being connected to the input terminal of said second absolute value circuit; h. first and second negative logic relay driver means; i. said first driver means having the output terminal of said first absolute value circuit connected to the input terminal thereof; j. said second driver means having the output terminal of said second absolute valve circuit connected to the input terminal thereof; and k. switch means responsive to the output voltages of said first and second driver means to select the redundant voltage having the second-highest magnitude.
Claim 14
Dependent Claim
225 words
A second-highest voltages selector for use with triple redundant voltages comprising: a. three redundant voltages V1, V2, and V3; b. first, second and third comparator means having applied at the input terminals thereof voltages V2C and V1C, V3C and V2C, v1C and V3C, respectively, wherein voltages V1C, V2C and V3C are proportional to voltages V1, V2 and V3, respectively; c. the output terminals of said first and second comparator means being connected by means of equal resistors to a first junction point; d. the output terminals of said second and third comparator means likewise being connected by means of equal resistors to a second junction point; e. first and second absolute value circuit means; value f. said first junction point being connected to the input terminal of said first absolute value circuit; g. said second junction point being connected to the input terminal of said second absolute value circuit; h. first and second negative logic relay driver means; i. said first driver means having the output terminal of said first absolute value circuit connected to the input terminal thereof; j. said second driver means having the output terminal of said second absolute valve circuit connected to the input terminal thereof; and k. switch means responsive to the output voltages of said first and second driver means to select the redundant voltage having the second-highest magnitude.
References Cited (Backward Citations)
US3293452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |