Patent US3743924A successfully refreshed from Google Patents.
US3743924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual voltage regulator
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1972-07-03
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Granted: 1973-07-03
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Expires: 1992-07-03
Abstract
Abstract A pair of amplifiers and an equalizer circuit connected to a pair of voltage output terminals in a switching regulator sense the voltage between each of the output terminals and ground. A first amplifier senses the value of the voltage delivered to a first output terminal by the switching regulator and supplies a signal which causes the voltage at the first output terminal to remain constant. A second amplifier senses the relative values of voltages at the first and second output terminals and develops a signal which causes the equalizer circuit to provide a constant ratio of voltages at the two output terminals of the switching regulator.
Inventors
- 👤 L Genuit
- 👤 R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:44
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/305; H02M3/315; H02M3/3155
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
331 words
A dual voltage regulator: for use with a switching regulator having first and second voltage output terminals and a ground terminal, said dual regulator comprising a voltage divider having first and second input leads and an output lead, said first input lead of said divider being connected to said first output terminal of said switching regulator, said second input lead of said divider being connected to said second output terminal of said switching regulator; an operational amplifier having first and second input leads and an output lead, said first input lead of said operational amplifier being connected to said output lead of said divider, said second input lead of said operational amplifier being connected to said ground terminal; first, second, third, fourth and fifth transistors each having a base, a collector and an emitter, said collectors of said first and said third transistors being coupled to said first output terminal, said collectors of said second and said fourth transistors being coupled to said ground terminal, said emitters of said first and said fifth transistors being connected to said ground terminal, said emitter of said second transistor being connected to said second terminal of said switching regulator, said base of said first transistor being connected to said emitter of said third transistor, said base of said second transistor being connected to said emitter of said fourth transistor, said base of said fourth transistor being connected to said collector of said fifth transistor; and first, second, third and fourth resistors, said first resistor being connected between said ground terminal and said emitter of said third transistor, said second resistor being connected between said second terminal and said emitter of said fourth transistor, said third resistor being connected between said second terminal and said collector of said fifth transistor, said fourth resistor being connected between said second terminal and said base of said fifth transistor, said output lead of said operational amplifier being coupled to said bases of said third and said fifth transistors.
Claim 2
Dependent Claim
331 words
A dual voltage regulator: for use with a switching regulator having first and second voltage output terminals and a ground terminal, said dual regulator comprising a voltage divider having first and second input leads and an output lead, said first input lead of said divider being connected to said first output terminal of said switching regulator, said second input lead of said divider being connected to said second output terminal of said switching regulator; an operational amplifier having first and second input leads and an output lead, said first input lead of said operational amplifier being connected to said output lead of said divider, said second input lead of said operational amplifier being connected to said ground terminal; first, second, third, fourth and fifth transistors each having a base, a collector and an emitter, said collectors of said first and said third transistors being coupled to said first output terminal, said collectors of said second and said fourth transistors being coupled to said ground terminal, said emitters of said first and said fifth transistors being connected to said ground terminal, said emitter of said second transistor being connected to said second terminal of said switching regulator, said base of said first transistor being connected to said emitter of said third transistor, said base of said second transistor being connected to said emitter of said fourth transistor, said base of said fourth transistor being connected to said collector of said fifth transistor; and first, second, third and fourth resistors, said first resistor being connected between said ground terminal and said emitter of said third transistor, said second resistor being connected between said second terminal and said emitter of said fourth transistor, said third resistor being connected between said second terminal and said collector of said fifth transistor, said fourth resistor being connected between said second terminal and said base of said fifth transistor, said output lead of said operational amplifier being coupled to said bases of said third and said fifth transistors.
Claim 3
Dependent Claim
233 words
A dual voltage regulator for use with a switching regulator having first and second output terminals and a ground terminal, said dual regulator comprising: a voltage divider having first and second input leads and an output lead, said first input lead of said divider being connected to said first output terminal of said switching regulator, said second input lead of said divider being connected to said second output terminal of said switching regulator; first and second amplifiers each having first and second input leads and an output lead, said first input lead of said first amplifier being connected to said output lead of said divider, said second input leads of said first and said second amplifiers being connected to said ground terminal, said first input lead of said second amplifier being connected to said second output terminal of said switching regulator; a rate generator; a trigger generator, said rate generator being connected between said trigger generator and said output lead of said second amplifier, said trigger generator being connected to said switching regulator; an equalizer circuit having first and second signal input leads, said equalizer circuit being connected between said first and said second output terminals of said switching regulator, said equalizer circuit being connected to said ground terminal; and means for coupling said first and said second signal input lead of said equalizer circuit to said output lead of said first amplifier.
Claim 4
Dependent Claim
233 words
A dual voltage regulator for use with a switching regulator having first and second output terminals and a ground terminal, said dual regulator comprising: a voltage divider having first and second input leads and an output lead, said first input lead of said divider being connected to said first output terminal of said switching regulator, said second input lead of said divider being connected to said second output terminal of said switching regulator; first and second amplifiers each having first and second input leads and an output lead, said first input lead of said first amplifier being connected to said output lead of said divider, said second input leads of said first and said second amplifiers being connected to said ground terminal, said first input lead of said second amplifier being connected to said second output terminal of said switching regulator; a rate generator; a trigger generator, said rate generator being connected between said trigger generator and said output lead of said second amplifier, said trigger generator being connected to said switching regulator; an equalizer circuit having first and second signal input leads, said equalizer circuit being connected between said first and said second output terminals of said switching regulator, said equalizer circuit being connected to said ground terminal; and means for coupling said first and said second signal input lead of said equalizer circuit to said output lead of said first amplifier.
Claim 5
Dependent Claim
104 words
A dual voltage regulator as defined in claim 2 wherein said equalizer circuit includes: first and second transistors each having a base, a collector and an emitter, said emitter of said first transistor being connected to said ground terminal, said base of said first transistor being connected to said first signal input lead of said equalizer circuit, said emitter of said second transistor being connected to said second output terminal of said switching regulator, said collector of said first transistor being coupled to said ground terminal, said base of said second transistor being connected to said second signal input lead of said equalizer circuit.
Claim 6
Dependent Claim
232 words
A dual voltage regulator as defined in claim 2 wherein said equalizer circuit and said means for coupling include: first, second, third, fourth and fifth transistors each having a base, a collector and an emitter, said collectors of said first and said thiRd transistors being coupled to said first output terminal, said collectors of said second and said fourth transistors being coupled to said ground terminal, said emitters of said first and said fifth transistors being connected to said ground terminal, said emitter of said second transistor being connected to said second terminal of said switching regulator, said base of said first transistor being connected to said emitter of said third transistor, said base of said second transistor being connected to said emitter of said fourth transistor, said base of said fourth transistor being connected to said collector of said fifth transistor; and first, second, third and fourth resistors, said first resistor being connected between said ground terminal and said emitter of said third transistor, said second resistor being connected between said second terminal and said emitter of said fourth transistor, said third resistor being connected between said second terminal and said collector of said fifth transistor, said fourth resistor being connected between said second terminal and said base of said fifth transistor, said output lead of said first amplifier being coupled to said bases of said third and said fifth transistors.
Claim 7
Dependent Claim
250 words
A dual voltage regulator as defined in claim 2 wherein said equalizer circuit and said means for coupling include: first, second, third, fourth and fifth transistors each having a base, a collector and an emitter, said collectors of said first and said third transistors being coupled to said first output terminal, said collectors of said second and said fourth transistors being coupled to said ground terminal, said emitters of said first and said fifth transistors being connected to said ground terminal, said emitter of said second transistor being connected to said second terminal of said switching regulator, said base of said first transistor being connected to said emitter of said third transistor, said base of said second transistor being connected to said emitter of said fourth transistor, said base of said fourth transistor being connected to said collector of said fifth transistor; first, second, third and fourth resistors, said first resistor being connected between said ground terminal and said emitter of said third transistor, said second resistor being connected between said second terminal and said emitter of said fourth transistor, said third resistor being connected between said second terminal and said collector of said fifth transistor, said fourth resistor being connected between said second terminal and said base of said fifth transistor, said output lead of said first amplifier being coupled to said base of said third transistor; and a diode, said diode being connected between said base of said fifth transistor and said output lead of said first amplifier.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |