US3573596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic converter for use in the voltage transformation and regulation of a uni-directional voltage
Assignee: Defence Israel
•
Filing: 1969-06-19
•
Granted: 1971-04-06
•
Expires: 1989-06-19
Abstract
Abstract An electronic converter for use in the voltage transformation and regulation of a unidirectional voltage having a controlled relaxation oscillator to which is coupled a power monostable circuit so as to be triggered thereby, an energy storage and voltage transformation transformer being coupled to the monostable circuit, the transformer having an output winding coupled to a load and a sensing winding tightly coupled to the output winding so as to sense the output voltage level. The sensing winding has coupled thereto a threshold detector which serves to transmit the excess energy stored in the transformer to a storage and filtering capacitor coupled to the detector via an amplifier which serves to switch the excess energy to the storage and filtering capacitor which is coupled to the relaxation oscillator so as to control its frequency and thereby maintain the output voltage at the required level.
Inventors
- 👤 Zvi Kamil
- 👤 Reuven Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33507; H02M3/33523
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
215 words
A DC to DC converter for use in the voltage transformation and regulation of a unidirectional voltage comprising: a. a controlled relaxation oscillator; b. a power monostable circuit; c. circuit means connecting the power monostable circuit to the relaxation oscillator so as to be triggered thereby; d. an energy storage and voltage transformation transformer; e. circuit means connecting the transformer to the monostable circuit; f. a rectifier; g. a capacitor; h. said transformer including an output winding; i. circuit means connecting said output winding to a load in Series with said rectifier; j. said capacitor being connected in parallel with the load; k. said transformer including a sensing winding; l. circuit means tightly coupling the sensing winding to the output winding so as to sense the output voltage level; m. a threshold detector; n. circuit means coupling the threshold detector to the sensing winding; o. a storage and filtering capacitor; p. an amplifier; q. circuit means coupling said storage and filtering capacitor to said detector via said amplifier so as to switch excess energy stored in the transformer to the storage and filtering capacitor; and r. circuit means coupling said storage and filtering capacitor to said relaxation oscillator so as to control its frequency and thereby to maintain the output voltage at a required level.
Claim 2
Dependent Claim
215 words
A DC to DC converter for use in the voltage transformation and regulation of a unidirectional voltage comprising: a. a controlled relaxation oscillator; b. a power monostable circuit; c. circuit means connecting the power monostable circuit to the relaxation oscillator so as to be triggered thereby; d. an energy storage and voltage transformation transformer; e. circuit means connecting the transformer to the monostable circuit; f. a rectifier; g. a capacitor; h. said transformer including an output winding; i. circuit means connecting said output winding to a load in Series with said rectifier; j. said capacitor being connected in parallel with the load; k. said transformer including a sensing winding; l. circuit means tightly coupling the sensing winding to the output winding so as to sense the output voltage level; m. a threshold detector; n. circuit means coupling the threshold detector to the sensing winding; o. a storage and filtering capacitor; p. an amplifier; q. circuit means coupling said storage and filtering capacitor to said detector via said amplifier so as to switch excess energy stored in the transformer to the storage and filtering capacitor; and r. circuit means coupling said storage and filtering capacitor to said relaxation oscillator so as to control its frequency and thereby to maintain the output voltage at a required level.
Claim 3
Dependent Claim
33 words
A DC to DC converter according to claim 1, wherein said threshold detector comprises a temperature compensated network including a Zener diode, a compensating diode and an amplifying transistor coupled to said amplifier.
Claim 4
Dependent Claim
37 words
A DC to DC converter according to claim 2, wherein said amplifier is coupled to said temperature compensated network so as to reduce current changes passing therethrough and caused by variations in the input voltage and load.
Claim 5
Dependent Claim
61 words
A DC to DC converter according to claim 1, wherein said controlled relaxation oscillator comprises a unijunction transistor, a resistance network connected between a fixed voltage point and said storage and filtering capacitor, the emitter of said unijunction transistor being coupled via a filtering network to a tapping on said resistance network and via a capacitance to a common input terminal.
Claim 6
Dependent Claim
15 words
A DC to DC converter according to claim 4, wherein the unijunction transistor is programmable.
Claim 7
Dependent Claim
73 words
A DC to DC converter according to claim 1, wherein said control relaxation oscillator comprises a constant current source connected between an input terminal and the anode of a four layer diode or element of similar characteristics, said anode being connected via a resistor to said storage and filtering capacitor and via a timing capacitor to a common input terminal, the cathode of said four layer diode being coupled to said power monostable.
Claim 8
Dependent Claim
85 words
A DC to DC converter according to claim 1, wherein said monostable comprises an output transistor, a swinging choke transformer, whose main winding is connected between the collector of the output transistor and an input DC line, there being furthermore provided a second transformer having a square hysteresis loop core, a main winding connected between said collector and the input DC line and a regenerative feedback winding which is coupled to the base of the output transistor via a thyristor and a constant current device.
Claim 9
Dependent Claim
17 words
A DC to DC converter according to claim 7, wherein the constant current device is a resistor.
Claim 10
Dependent Claim
90 words
A DC to DC converter according to claim 1, wherein said power monostable comprises an output transistor, a swinging choke transformer whose main winding is connected in series with a primary winding of a regenerative feedback transformer having a square hysteresis loop core between the collector of the output transistor and an input DC line, a regenerative winding of said regenerative feedback transformer being connected between the base of the output transistor and a common input line, a triggering winding and a recovery winding in series with the output winding.
Claim 11
Dependent Claim
64 words
A DC to DC converter according to claim 1, wherein said monostable comprises a transformer-coupled triggered blocking oscillator and wherein said transformer is provided with a main winding connected between the collector of the output transistor and an input DC line, said output and voltage sensing winding and a regenerative winding coupled between said common input line and the base of the output transistor.
References Cited (Backward Citations)
US3206694A
Cited
US3302130A
Cited
US3419781A
Cited
US3400319A
Cited
US3421069A
Cited
US3435320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |