Patent US3641424A successfully refreshed from Google Patents.
US3641424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative voltage regulators
Assignee: Optron Inc
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Filing: 1970-11-20
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Granted: 1972-02-08
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Expires: 1990-11-20
Abstract
Abstract Regenerative power switches for use in semiconductor circuits such as in voltage regulators having a DC or low-frequency output controlled by a high-frequency pulse input. The circuits are designed to minimize the power dissipation in the regulator circuit and to minimize the number of components, particularly inductive components required. The regulator circuit having a negative common uses a feedback voltage from a secondary coil on the output filter choke to create a voltage exceeding the supply voltage, which is used without rectification thereof to force a series transistor into saturation during the ON portion of the cycle, thereby minimizing the voltage drop across that transistor and maximizing power output capability of the voltage regulator or amplifier. The regulator circuit having a positive common uses a feedback voltage from a top on the output filter choke winding to force a series transistor into saturation. The use of the tap minimizes the power dissipation in the regulator during the ON portion of the cycle and further aids in a fast and complete turnoff.
Inventors
- 👤 James H Kuykendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:12
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
222 words
In a voltage regulatOr, the combination having a positive input terminal, a positive output terminal, a control terminal, and a negative common input-output terminal, comprised of an inductor, having first and second end connections and an intermediate connection, a capacitor, first and second transistor switches, at least one diode and a coupling means; said capacitor being coupled between said positive output terminal and said common input-output terminal; said first end connection of said inductor winding being coupled to said positive output terminal; said first transistor switch being coupled between said first input terminal and said intermediate connection and being responsive to its base current; said second transistor switch being coupled between said second end connection of said inductor and said base of said first transistor switch and being responsive to its base current; said coupling means coupling said base of said second transistor switch and the lead of said second transistor switch coupled to said inductor to said control terminal, and being responsive to a pulse control signal applied thereto, to initially supply current through said second transistor switch to said base of said first transistor switch; and, said intermediate connection and said negative common inputoutput terminal being coupled through said diode, said diode being conductive when the voltage of said negative common input-output terminal exceeds the voltage on said intermediate connection.
Claim 2
Dependent Claim
222 words
In a voltage regulatOr, the combination having a positive input terminal, a positive output terminal, a control terminal, and a negative common input-output terminal, comprised of an inductor, having first and second end connections and an intermediate connection, a capacitor, first and second transistor switches, at least one diode and a coupling means; said capacitor being coupled between said positive output terminal and said common input-output terminal; said first end connection of said inductor winding being coupled to said positive output terminal; said first transistor switch being coupled between said first input terminal and said intermediate connection and being responsive to its base current; said second transistor switch being coupled between said second end connection of said inductor and said base of said first transistor switch and being responsive to its base current; said coupling means coupling said base of said second transistor switch and the lead of said second transistor switch coupled to said inductor to said control terminal, and being responsive to a pulse control signal applied thereto, to initially supply current through said second transistor switch to said base of said first transistor switch; and, said intermediate connection and said negative common inputoutput terminal being coupled through said diode, said diode being conductive when the voltage of said negative common input-output terminal exceeds the voltage on said intermediate connection.
Claim 3
Dependent Claim
40 words
The voltage regulator of claim 1 wherein: said first transistor switch is an NPN-transistor having an emitter, a base, and a collector; said emitter being coupled to said intermediate connection; and, said collector being coupled to said first input terminal.
Claim 4
Dependent Claim
238 words
A circuit for a voltage regulator, said circuit having a positive input terminal, a positive output terminal, a common negative input-output terminal, a control terminal and a feedback terminal, for use with an output filter of a capacitor and an inductor having a first lead coupled to said capacitor, a second lead coupled to said feedback terminal and a third lead coupled to said positive output terminal, the combination comprised of first and second NPN-transistors, each having an emitter, a base and a collector, a first diode a resistor and a coupling means, said emitter of said first transistor being coupled to said positive output terminal, said collector of said first transistor being coupled to said positive input terminal, said emitter of said second transistor being coupled to said base of said first transistor, said collector of said second transistor being coupled to said feedback terminal through said first diode and to said base of said second transistor through said resistor, said first diode being conductive when the voltage on said feedback terminal exceeds the voltage on said collector of said second transistor, and said coupling means being coupled to said control terminal, to said base and to said collector of said second transistor and being responsive to a pulse control signal applied thereto, to initially supply base current and collector current to said second transistor upon the application of a suitable control pulse to said control terminal.
Claim 5
Dependent Claim
238 words
A circuit for a voltage regulator, said circuit having a positive input terminal, a positive output terminal, a common negative input-output terminal, a control terminal and a feedback terminal, for use with an output filter of a capacitor and an inductor having a first lead coupled to said capacitor, a second lead coupled to said feedback terminal and a third lead coupled to said positive output terminal, the combination comprised of first and second NPN-transistors, each having an emitter, a base and a collector, a first diode a resistor and a coupling means, said emitter of said first transistor being coupled to said positive output terminal, said collector of said first transistor being coupled to said positive input terminal, said emitter of said second transistor being coupled to said base of said first transistor, said collector of said second transistor being coupled to said feedback terminal through said first diode and to said base of said second transistor through said resistor, said first diode being conductive when the voltage on said feedback terminal exceeds the voltage on said collector of said second transistor, and said coupling means being coupled to said control terminal, to said base and to said collector of said second transistor and being responsive to a pulse control signal applied thereto, to initially supply base current and collector current to said second transistor upon the application of a suitable control pulse to said control terminal.
Claim 6
Dependent Claim
46 words
The circuit of claim 3 wherein: said coupling means is coupled to said collector of said second transistor through a second diode; and, said second diode being conductive when the voltage on said last-named collector is less than the voltage directed thereto from said coupling means.
Claim 7
Dependent Claim
264 words
In a voltage regulator, the combination, having a positive input terminal, a positive output terminal, a control terminal and a negative common input-output terminal comprised of an inductor having first and second end connections and an intermediate connection, a capacitor, first and second NPN-transistors, each having an emitter, a base and a collector, first and second diodes and a coupling means, said capacitor being coupled between said positive output terminal and said common input-output terminal, said first end connection of said inductor being coupled to said positive output terminal, said emitter of said first transistor being coupled to said intermediate connection, said collector of said first transistor being coupled to said positive input terminal, said emitter of said second transistor being coupled to said base of said first transistor, said collector of said second transistor being coupled to said second end connection through a first diode and to said base of said second transistor through a resistor, said first diode being conductive when the voltage on said second end connection exceeds the voltage on said collector of said second transistor switch, said intermediate connection and said negative common input-output terminal being coupled through said second diode, said second diode being conductive when the voltage of said negative common input-output terminal exceeds the voltage on said intermediate connection, said coupling means being coupled to said control terminal, to said base and to said collector of said second transistor and being adapted to initially supply base current and collector current to said second transistor upon the application of a suitable control pulse to said control terminal.
Claim 8
Dependent Claim
264 words
In a voltage regulator, the combination, having a positive input terminal, a positive output terminal, a control terminal and a negative common input-output terminal comprised of an inductor having first and second end connections and an intermediate connection, a capacitor, first and second NPN-transistors, each having an emitter, a base and a collector, first and second diodes and a coupling means, said capacitor being coupled between said positive output terminal and said common input-output terminal, said first end connection of said inductor being coupled to said positive output terminal, said emitter of said first transistor being coupled to said intermediate connection, said collector of said first transistor being coupled to said positive input terminal, said emitter of said second transistor being coupled to said base of said first transistor, said collector of said second transistor being coupled to said second end connection through a first diode and to said base of said second transistor through a resistor, said first diode being conductive when the voltage on said second end connection exceeds the voltage on said collector of said second transistor switch, said intermediate connection and said negative common input-output terminal being coupled through said second diode, said second diode being conductive when the voltage of said negative common input-output terminal exceeds the voltage on said intermediate connection, said coupling means being coupled to said control terminal, to said base and to said collector of said second transistor and being adapted to initially supply base current and collector current to said second transistor upon the application of a suitable control pulse to said control terminal.
Claim 9
Dependent Claim
47 words
The circuit of claim 5 wherein: said coupling means is coupled to said collector of said second transistor switch through a second diode; and, said second diode being conductive when the voltage on said last-named collector is less than the voltage directed thereto from said coupling means.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |