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US4339792A
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US
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Voltage regulator using saturable transformer
Assignee: Individual
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Filing: 1980-04-08
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Granted: 1982-07-13
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Expires: 2000-04-08
Abstract
Abstract A voltage regulator using a saturable transformer comprises a transformer having a primary and secondary windings, an AC power source for supplying the primary winding a fluctuating alternating current, and a rectifier connected to the secondary winding for rectifying an AC voltage derived therefrom to produce a DC output voltage. The transformer includes a core having four legs and two common portions magnetically joining the four legs, and a control winding supplied with DC control bias from a control circuit. The primary and secondary windings are wound on the first and second legs and the control winding is wound on the first and third legs.
Inventors
- 👤 Masayuki Yasumura
- 👤 Yoshio Ishigaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:43
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/14; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/325; H01F29/143
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
155 words
A voltage regulator using a saturable transformer comprising: a transformer including a ferromagnetic core having fours legs and two common portions magnetically joining said four legs, a primary winding wound on said first and fourth legs of said core, a secondary winding wound on said second and third legs of said core and a control winding wound on said first and second legs of said core such that no alternating flux is transferred from said primary winding to said control winding; an AC power source for supplying said primary winding a fluctuating alternating current; rectifier means connected to said secondary winding for rectifying an AC voltage derived therefrom to produce a DC output voltage; and control means including an error detector for detecting a deviation of said output voltage from a desired voltage and bias means for supplying a DC control bias to said control winding in response to a signal from said error detector.
Claim 2
Dependent Claim
155 words
A voltage regulator using a saturable transformer comprising: a transformer including a ferromagnetic core having fours legs and two common portions magnetically joining said four legs, a primary winding wound on said first and fourth legs of said core, a secondary winding wound on said second and third legs of said core and a control winding wound on said first and second legs of said core such that no alternating flux is transferred from said primary winding to said control winding; an AC power source for supplying said primary winding a fluctuating alternating current; rectifier means connected to said secondary winding for rectifying an AC voltage derived therefrom to produce a DC output voltage; and control means including an error detector for detecting a deviation of said output voltage from a desired voltage and bias means for supplying a DC control bias to said control winding in response to a signal from said error detector.
Claim 3
Dependent Claim
49 words
A voltage regulator as set forth in claim 1, wherein said AC power source includes a fluctuating DC power source for supplying said primary winding a DC voltage, switching means connected to said primary winding, and drive means having an oscillator for driving said switching means ON and OFF.
Claim 4
Dependent Claim
27 words
A voltage regulator as set forth in claim 1, which further comprises a capacitor connected in parallel to said secondary winding to form a parametric resonant circuit.
Claim 5
Dependent Claim
130 words
A voltage regulator using a saturable transformer comprising: a transformer including a first and a second C cores, said first C core being rotated approximately 90° with respect to said second C core, a primary and a secondary winding wound on said first C core and a control winding being wound on said second C core; an AC power source for supplying said primary winding a fluctuating alternating current; rectifier means connected to said secondary winding for rectifying an AC voltage derived therefrom to produce a DC output voltage; and control means including an error detector for detecting a deviation of said output voltage from a desired voltage and bias means for supplying a DC control bias to said control winding in response to a signal from said error detector.
Claim 6
Dependent Claim
130 words
A voltage regulator using a saturable transformer comprising: a transformer including a first and a second C cores, said first C core being rotated approximately 90° with respect to said second C core, a primary and a secondary winding wound on said first C core and a control winding being wound on said second C core; an AC power source for supplying said primary winding a fluctuating alternating current; rectifier means connected to said secondary winding for rectifying an AC voltage derived therefrom to produce a DC output voltage; and control means including an error detector for detecting a deviation of said output voltage from a desired voltage and bias means for supplying a DC control bias to said control winding in response to a signal from said error detector.
Claim 7
Dependent Claim
27 words
A voltage regulator as set forth in claim 4, which further comprises a capacitor connected in parallel to said secondary winding to form a parametric resonant circuit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |