US3582765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic voltage regulator with fast acting circuit
Assignee: Superior Electric Co
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Filing: 1969-06-16
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Granted: 1971-06-01
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Expires: 1989-06-16
Abstract
Abstract An automatic voltage regulator of the type having a buck-boost transformer which is rendered exceedingly fast acting to prevent excessive changes in the value of the output voltage caused by a sudden exterior change of condition. The regulator includes a fast acting circuit that immediately responds to a sudden change of the output voltage and acts to nullify the delayed reaction of the buck-boost transformer to adjust to the sudden change until the detector circuit for the transformer has responded to the changed condition and caused the value of output voltage to again be at its selected value under the control of the transformer.
Inventors
- 👤 Owen J Mccabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:02
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/24; G05F1/26; G05F1/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
205 words
In combination with an automatic AC voltage regulator having input terminals at which an AC voltage is applied and output terminals at which a selected value of AC voltage is maintained, regulating means connected between terminals and responsive to a control signal to regulate the input voltage to the selected value of output voltage, detector means for sensing the value of the output voltage and supplying the control signal to the regulating means and in which the regulator requires a period of a few cycles of AC voltage to respond to sudden exterior changes of conditions, the improvement comprising a fast acting circuit for inhibiting the regulating means from regulating the input voltage, and including means for sensing the value of the output voltage and providing a signal when the value of the output voltage departs from a preselected range of value and inhibiting means connected to the regulating means for inhibiting the regulating means from effecting the input voltage, and in which the regulating means includes a transformer having a secondary winding connected between an input and an output terminal and a primary winding connected to a source of adjustable AC and in which the inhibiting means includes another primary winding on the transformer.
Claim 2
Dependent Claim
205 words
In combination with an automatic AC voltage regulator having input terminals at which an AC voltage is applied and output terminals at which a selected value of AC voltage is maintained, regulating means connected between terminals and responsive to a control signal to regulate the input voltage to the selected value of output voltage, detector means for sensing the value of the output voltage and supplying the control signal to the regulating means and in which the regulator requires a period of a few cycles of AC voltage to respond to sudden exterior changes of conditions, the improvement comprising a fast acting circuit for inhibiting the regulating means from regulating the input voltage, and including means for sensing the value of the output voltage and providing a signal when the value of the output voltage departs from a preselected range of value and inhibiting means connected to the regulating means for inhibiting the regulating means from effecting the input voltage, and in which the regulating means includes a transformer having a secondary winding connected between an input and an output terminal and a primary winding connected to a source of adjustable AC and in which the inhibiting means includes another primary winding on the transformer.
Claim 3
Dependent Claim
40 words
The invention as defined in claim 1 in which the inhibiting means includes short circuit means connected across the other primary winding, said short circuit means being normally inoperative and being rendered operative by the signal from when sensing means.
Claim 4
Dependent Claim
48 words
The invention as defined In claim 2 in which the sensing means includes a first circuit for providing a signal when the output voltage is greater than the predetermined range and a second circuit for providing a signal then the output voltage is less than the predetermined range.
Claim 5
Dependent Claim
45 words
The invention as defined in claim 3 in which the short circuit means includes a first path connected to the first circuit and a second path connected to the second circuit, said paths being rendered conducting only when receiving a signal from their respective circuits.
Claim 6
Dependent Claim
62 words
The invention as defined in claim 4 in which the second path includes a means for providing a rectified voltage related to the value of the output voltage that is filtered by a fast filter means, a source of unidirectional power and means comprising the rectified voltage with the source of power to produce a signal when the former exceeds the latter.
Claim 7
Dependent Claim
72 words
The invention as defined in claim 4 in which the first path includes means for providing a rectified voltage related to the value of the output voltage that is filtered by a slow filter means, means for providing another rectified voltage related to the output voltage that is filtered by a fast filter means and means for comparing the two rectified voltages to produce the signal when the latter exceeds the former.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |