US3571604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual polarity voltage regulator with tracking outputs
Assignee: AT&T Inc
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Filing: 1969-03-14
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Granted: 1971-03-23
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Expires: 1989-03-14
Abstract
Abstract A dual output voltage regulator supplying regulated voltages of identical magnitude and opposite polarity regulates the voltage of one polarity by comparison to a fixed reference voltage. The regulated voltage of the opposite polarity is regulated by detecting the voltage difference between the two regulated output voltages of opposite polarities and utilizing the voltage balance of the difference as a reference in regulating the voltage of the opposite polarity. The sensitivity of the regulator regulating the voltage of the opposite polarity is increased by using a differential error detector circuit energized by a constant current source.
Inventors
- 👤 Brank C La Porta
- 👤 Paul W Ussery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:04
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/577; G05F1/585
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
183 words
A multioutput voltage regulator supplying at least two regulated voltages of identical magnitude and opposite polarity comprising a first voltage regulation means to supply a first regulated voltage of one polarity including a first seriesregulating device, a second voltage regulation means to supply a second regulated voltage of a polarity opposite to said one polarity, said second voltage regulation means comprising a second series voltage-regulating device and error-detecting means responsive to the voltage balance of said first and second regulated voltages, said error-detecting means comprising a voltage divider shunted across respective output terminals of said first and second voltage regulation means and a differential error detector circuit coupled to said voltage divider, said differential error detector circuit responding to deviations from said voltage balance as detected through said voltage divider and in response thereto altering the regulation in said series voltage regulator control means, and said first and second series voltage-regulating devices being located in a direct path interconnecting a first and a second unregulated source to a first and second regulated output terminal of said first and second voltage regulation means, respectively.
Claim 2
Dependent Claim
183 words
A multioutput voltage regulator supplying at least two regulated voltages of identical magnitude and opposite polarity comprising a first voltage regulation means to supply a first regulated voltage of one polarity including a first seriesregulating device, a second voltage regulation means to supply a second regulated voltage of a polarity opposite to said one polarity, said second voltage regulation means comprising a second series voltage-regulating device and error-detecting means responsive to the voltage balance of said first and second regulated voltages, said error-detecting means comprising a voltage divider shunted across respective output terminals of said first and second voltage regulation means and a differential error detector circuit coupled to said voltage divider, said differential error detector circuit responding to deviations from said voltage balance as detected through said voltage divider and in response thereto altering the regulation in said series voltage regulator control means, and said first and second series voltage-regulating devices being located in a direct path interconnecting a first and a second unregulated source to a first and second regulated output terminal of said first and second voltage regulation means, respectively.
Claim 3
Dependent Claim
190 words
A dual voltage regulator to regulate two sources of unregulated voltages of opposite polarities, comprising a first series regulator to regulate a voltage of one polarity, a second series regulator to regulate a voltage of an opposite polarity, a first voltage error detector coupled to said voltage of one polarity to control said first series regulator, a second voltage error detector coupled to said voltage of one polarity and said voltage of the opposite polarity to control said second series regulator, said second error detector comprising a voltage divider circuit shunted across the regulated voltage of one polarity and the regulated voltage of the opposite polarity, a differential error detector circuit having its control input coupled to said voltage divider, a reference signal source comprising a constant current source coupled to said differential error detector, and means to utilize said differential error detector circuit to direct controlled amounts of the current output of said constant current source to control the impedance of said second series regulator, whereby the absolute magnitude of said voltage of an opposite polarity is maintained equal to the absolute magnitude of said voltage of one polarity.
Claim 4
Dependent Claim
190 words
A dual voltage regulator to regulate two sources of unregulated voltages of opposite polarities, comprising a first series regulator to regulate a voltage of one polarity, a second series regulator to regulate a voltage of an opposite polarity, a first voltage error detector coupled to said voltage of one polarity to control said first series regulator, a second voltage error detector coupled to said voltage of one polarity and said voltage of the opposite polarity to control said second series regulator, said second error detector comprising a voltage divider circuit shunted across the regulated voltage of one polarity and the regulated voltage of the opposite polarity, a differential error detector circuit having its control input coupled to said voltage divider, a reference signal source comprising a constant current source coupled to said differential error detector, and means to utilize said differential error detector circuit to direct controlled amounts of the current output of said constant current source to control the impedance of said second series regulator, whereby the absolute magnitude of said voltage of an opposite polarity is maintained equal to the absolute magnitude of said voltage of one polarity.
Claim 5
Dependent Claim
40 words
A dual voltage regulator as defined in claim 2 wherein said first and second series regulator are directly interposed between said two sources of unregulated voltages of opposite polarity and said first and second regulated voltages of opposite polarities, respectively.
Claim 6
Dependent Claim
169 words
A dual voltage regulator supplying a first regulated voltage output of one polarity and a second regulated voltage output of an opposite polarity comprising a first series regulator with a first controllable impedance, a second series regulator with a second controllable impedance, a first error detector responsive to voltage variations in said first regulated voltage output and controlling said first controllable impedance and a second error detector responsive to variations in a voltage balance of the voltage difference between said first regulated voltage output and said second regulated voltage output, said second error detector including a constant current source, and utilizing controlled proportional amounts of current supplied by said constant current source to vary the impedance of the second controllable impedance of said second series regulator in response to deviations in the balance of said voltage Balance, whereby the absolute magnitude of the voltage output of said second regulated voltage output is maintained continuously identical to the absolute magnitude of the voltage output of said first regulated voltage output.
Claim 7
Dependent Claim
169 words
A dual voltage regulator supplying a first regulated voltage output of one polarity and a second regulated voltage output of an opposite polarity comprising a first series regulator with a first controllable impedance, a second series regulator with a second controllable impedance, a first error detector responsive to voltage variations in said first regulated voltage output and controlling said first controllable impedance and a second error detector responsive to variations in a voltage balance of the voltage difference between said first regulated voltage output and said second regulated voltage output, said second error detector including a constant current source, and utilizing controlled proportional amounts of current supplied by said constant current source to vary the impedance of the second controllable impedance of said second series regulator in response to deviations in the balance of said voltage Balance, whereby the absolute magnitude of the voltage output of said second regulated voltage output is maintained continuously identical to the absolute magnitude of the voltage output of said first regulated voltage output.
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |