US3636433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage stabilizer apparatus
Assignee: Brandenburg Ltd
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Filing: 1970-01-28
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Granted: 1972-01-18
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Expires: 1990-01-28
Abstract
Abstract The invention provides a high-voltage low-current electric supply apparatus which is stabilized by use of a low-voltage transistor. A transformer with high-leakage inductance has two secondary windings, from one of which the high-voltage output is obtained; the other winding is a low-voltage winding supplying a transistor forming a controllable load. By controlling this transistor, as a function of the high-voltage output, the highvoltage output is controlled and can be stabilized.
Inventors
- 👤 Edward Philip Hyatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:47
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06; G05F1/00; G05F1/10; G05F1/12; G05F1/14; G05F1/16; G05F1/20; G05F1/32; G05F1/34; G05F1/38; G05F1/40; G05F1/44
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
357 words
A voltage-stabilized electrical power supply, comprising a. a transformer (10, 30) including 1. a core; 2. a primary winding (11, 32) wound on said core, said primary winding being adapted for connection with a source of alternating-current voltage; 3. output (14, 36) and loading (13, 35) secondary windings wound on said core, said core defining a relatively low reluctance main path for magnetic flux threading said primary and secondary windings, said core including a magnetic shunt portion (18) arranged to cause said output and loading secondary windings to be more tightly coupled with each other than with said primary winding, respectively; and 4. a third secondary winding (12, 37) mounted on said core in tightly coupled magnetic arrangement relative to said primary winding; b. circuit means including first rectifier means (20, 38) and output terminal means (22, 23; 42, 43) for connecting said output secondary winding with a direct-current external load; c. means (27, 52) establishing a direct-current reference voltage; d. means for applying a load across said loading secondary winding as a function of the potential difference between said reference voltage and the instantaneous output voltage that appears across said output terminals, said load applying means comprising 1. bridge rectifier means (R, 44) including a first pair of diagonally opposed terminals connected directly across said loading winding; 2. controllable means (24, 45) including power circuit electrodes connected across the remaining pair of diagonally opposed terminals of said bridge rectifier means, respectively, said controllable means including also a control electrode; and 3. control means for applying across said control electrode and one of said power circuit electrodes a control voltage that is a function of the difference between said reference voltage and a comparison voltage that is a direct function of said instantaneous output voltage, the voltage developed across said loading secondary winding in response to an input voltage applied across said primary winding being substantially greater than the voltage developed across said output secondary winding for the same input voltage; and e. third rectifier means (28, 53) connecting said third secondary winding with said control means, thereby to energize said control means with a direct-current voltage.
Claim 2
Dependent Claim
357 words
A voltage-stabilized electrical power supply, comprising a. a transformer (10, 30) including 1. a core; 2. a primary winding (11, 32) wound on said core, said primary winding being adapted for connection with a source of alternating-current voltage; 3. output (14, 36) and loading (13, 35) secondary windings wound on said core, said core defining a relatively low reluctance main path for magnetic flux threading said primary and secondary windings, said core including a magnetic shunt portion (18) arranged to cause said output and loading secondary windings to be more tightly coupled with each other than with said primary winding, respectively; and 4. a third secondary winding (12, 37) mounted on said core in tightly coupled magnetic arrangement relative to said primary winding; b. circuit means including first rectifier means (20, 38) and output terminal means (22, 23; 42, 43) for connecting said output secondary winding with a direct-current external load; c. means (27, 52) establishing a direct-current reference voltage; d. means for applying a load across said loading secondary winding as a function of the potential difference between said reference voltage and the instantaneous output voltage that appears across said output terminals, said load applying means comprising 1. bridge rectifier means (R, 44) including a first pair of diagonally opposed terminals connected directly across said loading winding; 2. controllable means (24, 45) including power circuit electrodes connected across the remaining pair of diagonally opposed terminals of said bridge rectifier means, respectively, said controllable means including also a control electrode; and 3. control means for applying across said control electrode and one of said power circuit electrodes a control voltage that is a function of the difference between said reference voltage and a comparison voltage that is a direct function of said instantaneous output voltage, the voltage developed across said loading secondary winding in response to an input voltage applied across said primary winding being substantially greater than the voltage developed across said output secondary winding for the same input voltage; and e. third rectifier means (28, 53) connecting said third secondary winding with said control means, thereby to energize said control means with a direct-current voltage.
Claim 3
Dependent Claim
22 words
a primary winding (11, 32) wound on said core, said primary winding being adapted for connection with a source of alternating-current voltage;
Claim 4
Dependent Claim
22 words
a primary winding (11, 32) wound on said core, said primary winding being adapted for connection with a source of alternating-current voltage;
Claim 5
Dependent Claim
32 words
controllable means (24, 45) including power circuit electrodes connected across the remaining pair of diagonally opposed terminals of said bridge rectifier means, respectively, said controllable means including also a control electrode; and
Claim 6
Dependent Claim
32 words
controllable means (24, 45) including power circuit electrodes connected across the remaining pair of diagonally opposed terminals of said bridge rectifier means, respectively, said controllable means including also a control electrode; and
Claim 7
Dependent Claim
84 words
Apparatus as defined in claim 1, wherein said control means comprises differential amplifier means (59, 60) including a pair of input terminals connected with the sources of said reference and comparison voltages, respectively; wherein said controllable means comprises a first transistor (45); and further including means including a second transistor (66) connected with said first transistor to define a Darlington circuit, and means including a third transistor (64) for connecting the output of said differential amplifier means with the input of said Darlington circuit.
Claim 8
Dependent Claim
65 words
Apparatus as defined in claim 2, and further including capacitance means (67) connected between the control electrode and one power circuit electrode of said second transistor to effect capacitive reactive loading of said loading secondary winding, and reactive shunt means (70, 71) connected with the control electrode of said third transistor for controlling the response time of the stabilizing loop defined by said control means.
Claim 9
Dependent Claim
105 words
control means for applying across said control electrode and one of said power circuit electrodes a control voltage that is a function of the difference between said reference voltage and a comparison voltage that is a direct function of said instantaneous output voltage, the voltage developed across said loading secondary winding in response to an input voltage applied across said primary winding being substantially greater than the voltage developed across said output secondary winding for the same input voltage; and e. third rectifier means (28, 53) connecting said third secondary winding with said control means, thereby to energize said control means with a direct-current voltage.
Claim 10
Dependent Claim
105 words
control means for applying across said control electrode and one of said power circuit electrodes a control voltage that is a function of the difference between said reference voltage and a comparison voltage that is a direct function of said instantaneous output voltage, the voltage developed across said loading secondary winding in response to an input voltage applied across said primary winding being substantially greater than the voltage developed across said output secondary winding for the same input voltage; and e. third rectifier means (28, 53) connecting said third secondary winding with said control means, thereby to energize said control means with a direct-current voltage.
Claim 11
Dependent Claim
63 words
output (14, 36) and loading (13, 35) secondary windings wound on said core, said core defining a relatively low reluctance main path for magnetic flux threading said primary and secondary windings, said core including a magnetic shunt portion (18) arranged to cause said output and loading secondary windings to be more tightly coupled with each other than with said primary winding, respectively; and
Claim 12
Dependent Claim
63 words
output (14, 36) and loading (13, 35) secondary windings wound on said core, said core defining a relatively low reluctance main path for magnetic flux threading said primary and secondary windings, said core including a magnetic shunt portion (18) arranged to cause said output and loading secondary windings to be more tightly coupled with each other than with said primary winding, respectively; and
Claim 13
Dependent Claim
95 words
a third secondary winding (12, 37) mounted on said core in tightly coupled magnetic arrangement relative to said primary winding; b. circuit means including first rectifier means (20, 38) and output terminal means (22, 23; 42, 43) for connecting said output secondary winding with a direct-current external load; c. means (27, 52) establishing a direct-current reference voltage; d. means for applying a load across said loading secondary winding as a function of the potential difference between said reference voltage and the instantaneous output voltage that appears across said output terminals, said load applying means comprising
Claim 14
Dependent Claim
95 words
a third secondary winding (12, 37) mounted on said core in tightly coupled magnetic arrangement relative to said primary winding; b. circuit means including first rectifier means (20, 38) and output terminal means (22, 23; 42, 43) for connecting said output secondary winding with a direct-current external load; c. means (27, 52) establishing a direct-current reference voltage; d. means for applying a load across said loading secondary winding as a function of the potential difference between said reference voltage and the instantaneous output voltage that appears across said output terminals, said load applying means comprising
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |