US4053945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master-slave control method and device for a multiphase circuit
Assignee: Individual
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Filing: 1976-01-05
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Granted: 1977-10-11
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Expires: 1996-01-05
Abstract
Abstract A method and a device for the master-slave control of the power of a multiphase thyristor bridge. A master-pulse, from a master-pulse generating circuit coupled with one phase of the multiphase means, is applied to a slave-pulse generating circuit. Three slave-pulses out of phase of 120° with respect to one another are produced by a slave-pulse generating circuit in case of a three-phase means. Said slave-pulses are applied across the gates and the anodes of a multiphase thyristor bridge.
Inventors
- 👤 Guy H. Dumas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:41
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M1/081; H02M1/088; H02M1/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A master-slave device for controlling the power of a multiphase thyristor bridge comprising: a single means for forming a master-pulse having a determined and adjustable phase relationship with one phase of the multiphase feed voltage; delay means in parallel or serial-parallel in order to provide a number of slave-pulses equal to the number of phases of the multiphase feed voltage; coupling means comprising photocouplers for applying said slave-pulses to the respective gates of the thyristors of the bridge whereby the control circuit is insulated from the charge circuit.
Claim 2
Dependent Claim
88 words
A master-slave device for controlling the power of a multiphase thyristor bridge comprising: a single means for forming a master-pulse having a determined and adjustable phase relationship with one phase of the multiphase feed voltage; delay means in parallel or serial-parallel in order to provide a number of slave-pulses equal to the number of phases of the multiphase feed voltage; coupling means comprising photocouplers for applying said slave-pulses to the respective gates of the thyristors of the bridge whereby the control circuit is insulated from the charge circuit.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |