US3887861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor inverter
Assignee: Tokyo Keiki Inc
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Filing: 1974-02-22
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Granted: 1975-06-03
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Expires: 1994-02-22
Abstract
Abstract A transistor inverter in which a power source is supplied to an output transformer through first and second transistors; the first and second transistors are alternately driven conductive by driving signals of opposite polarities derived from a driving signal generator; and the driving signal generator is driven to be controlled by a driving control signal from a driving control signal generator to provide the above driving signals and controlled by a control signal based on one portion of the output from the output transformer, thereby controlling the level of the driving signal.
Inventors
- 👤 Hiroshi Anzai
- 👤 Hiroyuki Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/53803; H02M7/53806; H02M7/5387; H02M7/53871
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
538 words
A transistor inverter comprising: a DC power source; an output transformer having primary, secondary and tertiary windings; a load connected to the secondary winding of the output transformer; a first transistor having its collector connected to one end of the DC power source and its emitter connected to one end of the primary winding of the output transformer; a second transistor having its collector connected to the one end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a third transistor having its collector connected to the other end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a fourth transistor having its collector connected to the other end of the DC power source and its emitter connected to the one end of the primary winding of the output transformer; a drive control signal generator generating rectangular drive control signals of opposite polarities; a control signal generator having a rectifier for rectifying an output derived from the tertiary winding of the output transformer, a constant voltage circuit for generating a constant voltage and a comparator for generating a control signal by comparing an output derived from the rectifier with the constant voltage derived from the constant voltage circuit; a driving signal generator having a driving transformer with primary, secondary, tertiary, quarternary and quinary windings, a fifth transistor having its collector connected to the one end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a sixth transistor having its collector connected to the other end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a seventh transistor having its collector connected to the neutral point of the primary winding of the driving transformer and its emitter connected to the one end of the DC power source and a waveform adjusting capacitor connected between both ends of the primary winding of the driving transformer, the one and other ends of the secondary winding of the driving transformer being connected to the base of the first transistor and the emitters of the second and third transistors, respectively, the one and other ends of the tertiary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the second transistor, respectively, the one and other ends of the quarternary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the third transistor, respectively, and the one and other ends of the quinary winding of the driving transformer being connected to the base of the fourth transistor and the emitters of the second and third transistors, respectively; means for supplying the rectangular drive control signals derived from the drive control signal generator to the bases of the fifth and sixth transistors of the driving signal generator, respectively; and means for supplying the control signal derived from the comparator of the control signal generator to the base of the seventh transistor of the driving signal generator.
Claim 2
Dependent Claim
538 words
A transistor inverter comprising: a DC power source; an output transformer having primary, secondary and tertiary windings; a load connected to the secondary winding of the output transformer; a first transistor having its collector connected to one end of the DC power source and its emitter connected to one end of the primary winding of the output transformer; a second transistor having its collector connected to the one end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a third transistor having its collector connected to the other end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a fourth transistor having its collector connected to the other end of the DC power source and its emitter connected to the one end of the primary winding of the output transformer; a drive control signal generator generating rectangular drive control signals of opposite polarities; a control signal generator having a rectifier for rectifying an output derived from the tertiary winding of the output transformer, a constant voltage circuit for generating a constant voltage and a comparator for generating a control signal by comparing an output derived from the rectifier with the constant voltage derived from the constant voltage circuit; a driving signal generator having a driving transformer with primary, secondary, tertiary, quarternary and quinary windings, a fifth transistor having its collector connected to the one end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a sixth transistor having its collector connected to the other end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a seventh transistor having its collector connected to the neutral point of the primary winding of the driving transformer and its emitter connected to the one end of the DC power source and a waveform adjusting capacitor connected between both ends of the primary winding of the driving transformer, the one and other ends of the secondary winding of the driving transformer being connected to the base of the first transistor and the emitters of the second and third transistors, respectively, the one and other ends of the tertiary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the second transistor, respectively, the one and other ends of the quarternary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the third transistor, respectively, and the one and other ends of the quinary winding of the driving transformer being connected to the base of the fourth transistor and the emitters of the second and third transistors, respectively; means for supplying the rectangular drive control signals derived from the drive control signal generator to the bases of the fifth and sixth transistors of the driving signal generator, respectively; and means for supplying the control signal derived from the comparator of the control signal generator to the base of the seventh transistor of the driving signal generator.
Claim 3
Dependent Claim
538 words
A transistor inverter comprising: a DC power source; an output transformer having primary, secondary and tertiary windings; a load connected to the secondary winding of the output transformer; a first transistor having its collector connected to one end of the DC power source and its emitter connected to one end of the primary winding of the output transformer; a second transistor having its collector connected to the one end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a third transistor having its collector connected to the other end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a fourth transistor having its collector connected to the other end of the DC power source and its emitter connected to the one end of the primary winding of the output transformer; a drive control signal generator generating rectangular drive control signals of opposite polarities; a control signal generator having a rectifier for rectifying an output derived from the tertiary winding of the output transformer, a constant voltage circuit for generating a constant voltage and a comparator for generating a control signal by comparing an output derived from the rectifier with the constant voltage derived from the constant voltage circuit; a driving signal generator having a driving transformer with primary, secondary, tertiary, quarternary and quinary windings, a fifth transistor having its collector connected to the one end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a sixth transistor having its collector connected to the other end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a seventh transistor having its collector connected to the neutral point of the primary winding of the driving transformer and its emitter connected to the one end of the DC power source and a waveform adjusting capacitor connected between both ends of the primary winding of the driving transformer, the one and other ends of the secondary winding of the driving transformer being connected to the base of the first transistor and the emitters of the second and third transistors, respectively, the one and other ends of the tertiary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the second transistor, respectively, the one and other ends of the quarternary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the third transistor, respectively, and the one and other ends of the quinary winding of the driving transformer being connected to the base of the fourth transistor and the emitters of the second and third transistors, respectively; means for supplying the rectangular drive control signals derived from the drive control signal generator to the bases of the fifth and sixth transistors of the driving signal generator, respectively; and means for supplying the control signal derived from the comparator of the control signal generator to the base of the seventh transistor of the driving signal generator.
Claim 4
Dependent Claim
538 words
A transistor inverter comprising: a DC power source; an output transformer having primary, secondary and tertiary windings; a load connected to the secondary winding of the output transformer; a first transistor having its collector connected to one end of the DC power source and its emitter connected to one end of the primary winding of the output transformer; a second transistor having its collector connected to the one end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a third transistor having its collector connected to the other end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a fourth transistor having its collector connected to the other end of the DC power source and its emitter connected to the one end of the primary winding of the output transformer; a drive control signal generator generating rectangular drive control signals of opposite polarities; a control signal generator having a rectifier for rectifying an output derived from the tertiary winding of the output transformer, a constant voltage circuit for generating a constant voltage and a comparator for generating a control signal by comparing an output derived from the rectifier with the constant voltage derived from the constant voltage circuit; a driving signal generator having a driving transformer with primary, secondary, tertiary, quarternary and quinary windings, a fifth transistor having its collector connected to the one end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a sixth transistor having its collector connected to the other end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a seventh transistor having its collector connected to the neutral point of the primary winding of the driving transformer and its emitter connected to the one end of the DC power source and a waveform adjusting capacitor connected between both ends of the primary winding of the driving transformer, the one and other ends of the secondary winding of the driving transformer being connected to the base of the first transistor and the emitters of the second and third transistors, respectively, the one and other ends of the tertiary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the second transistor, respectively, the one and other ends of the quarternary winding of the driving transformer being connected to the emitters of the first and fourth transistors and the base of the third transistor, respectively, and the one and other ends of the quinary winding of the driving transformer being connected to the base of the fourth transistor and the emitters of the second and third transistors, respectively; means for supplying the rectangular drive control signals derived from the drive control signal generator to the bases of the fifth and sixth transistors of the driving signal generator, respectively; and means for supplying the control signal derived from the comparator of the control signal generator to the base of the seventh transistor of the driving signal generator.
Claim 5
Dependent Claim
556 words
A transistor inverter comprising: a DC power source; an output transformer having primary, secondary and tertiary windings; a load connected to the secondary winding of the output transformer; a first transistor having its collector connected to one end of the DC power source and its emitter connected to one end of the primary winding of the output transformer; a second transistor having its collector connected to the one end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a third transistor having its emitter connected to the other end of the DC power cource and its collector connected to the other end of the primary winding of the output transformer; a fourth transistor having its emitter connected to the other end of the DC power source and its collector connected to the one end of the primary winding of the output transformer; a drive control signal generator generating rectangular drive control signals of opposite polarities; a control signal generator having a rectifier for rectifying an output derived from the tertiary winding of the output transformer, a constant voltage circuit for generating a constant voltage and a comparator for generating a control signal by comparing an output derived from the rectifier with the constant voltage derived from the constant voltage circuit; a driving signal generator having a driving transformer with primary, secondary, tertiary and guarternary windings, a fifth transistor having its collector connected to the one end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a sixth transistor having its collector connected to the other end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a seventh transistor having its collector connected to the neutral point of the primary winding of the driving transformer and its emitter connected to the one end of the DC power source and a waveform adjusting capacitor connected between both ends of the primary winding of the driving transformer, the one end of the secondary winding of the driving transformer being connected to the base of the first transistor, the other end of the secondary winding of the driving transformer being connected to the emitter of the second transistor and the collector of the third transistor, the one end of the tertiary winding of the driving transformer being connected to the emitter of the first transistor and the collector of the fourth transistor, the other end of the tertiary winding of the driving transformer being connected to the base of the second transistor, the both ends of the quarternary winding of the driving transformer being connected to the bases of the third and fourth transistors, and the neutral point of the quarternary winding of the driving transformer being connected to the other end of the DC power source and the emitters of the third and fourth transistors; means for supplying the rectangular drive control signals derived from the drive control signal generator to the bases of the fifth and sixth transistors of the driving signal generator, respectively; and means for supplying the control signal derived from the comparator of the control signal generator to the base of the seventh transistor of the driving signal generator.
Claim 6
Dependent Claim
556 words
A transistor inverter comprising: a DC power source; an output transformer having primary, secondary and tertiary windings; a load connected to the secondary winding of the output transformer; a first transistor having its collector connected to one end of the DC power source and its emitter connected to one end of the primary winding of the output transformer; a second transistor having its collector connected to the one end of the DC power source and its emitter connected to the other end of the primary winding of the output transformer; a third transistor having its emitter connected to the other end of the DC power cource and its collector connected to the other end of the primary winding of the output transformer; a fourth transistor having its emitter connected to the other end of the DC power source and its collector connected to the one end of the primary winding of the output transformer; a drive control signal generator generating rectangular drive control signals of opposite polarities; a control signal generator having a rectifier for rectifying an output derived from the tertiary winding of the output transformer, a constant voltage circuit for generating a constant voltage and a comparator for generating a control signal by comparing an output derived from the rectifier with the constant voltage derived from the constant voltage circuit; a driving signal generator having a driving transformer with primary, secondary, tertiary and guarternary windings, a fifth transistor having its collector connected to the one end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a sixth transistor having its collector connected to the other end of the primary winding of the driving transformer and its emitter connected to the other end of the DC power source, a seventh transistor having its collector connected to the neutral point of the primary winding of the driving transformer and its emitter connected to the one end of the DC power source and a waveform adjusting capacitor connected between both ends of the primary winding of the driving transformer, the one end of the secondary winding of the driving transformer being connected to the base of the first transistor, the other end of the secondary winding of the driving transformer being connected to the emitter of the second transistor and the collector of the third transistor, the one end of the tertiary winding of the driving transformer being connected to the emitter of the first transistor and the collector of the fourth transistor, the other end of the tertiary winding of the driving transformer being connected to the base of the second transistor, the both ends of the quarternary winding of the driving transformer being connected to the bases of the third and fourth transistors, and the neutral point of the quarternary winding of the driving transformer being connected to the other end of the DC power source and the emitters of the third and fourth transistors; means for supplying the rectangular drive control signals derived from the drive control signal generator to the bases of the fifth and sixth transistors of the driving signal generator, respectively; and means for supplying the control signal derived from the comparator of the control signal generator to the base of the seventh transistor of the driving signal generator.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |