US4868461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thyristor triggering device
Assignee: Heimann GmbH
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Filing: 1987-10-22
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Granted: 1989-09-19
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Expires: 2007-10-22
Abstract
Abstract A device for triggering a thyristor uses light pulses or flashes for achieving a galvanic separation between the triggering circuitry and the load circuit. The light pulses are generated by a flashlamp disposed in a housing in which a number of channels extend radially, each channel having a light conductor therein. The light conductors lead to respective individual thyristors which are to be triggered.
Inventors
- 👤 Gerhard Debus
- 👤 Bernd Bartscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:55
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/34; H02; H02M; H02M1/00; H02M1/08; H02M1/088; H02M1/092
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
89 words
A device for triggering a thyristor having a light sensitive trigger electrode, said device comprising: a flashlamp; a tubular housing having a hollow interior in which said flashlamp is disposed, said housing having at least one radial channel therein leading from an exterior of said housing to said interior; a light guide in said channel optically coupling said interior of said housing with said trigger electrode of said thyristor; and circuit means for igniting said flashlamp to generate a light pulse to trigger said thyristor via said light guide.
Claim 2
Independent Claim
89 words
A device for triggering a thyristor having a light sensitive trigger electrode, said device comprising: a flashlamp; a tubular housing having a hollow interior in which said flashlamp is disposed, said housing having at least one radial channel therein leading from an exterior of said housing to said interior; a light guide in said channel optically coupling said interior of said housing with said trigger electrode of said thyristor; and circuit means for igniting said flashlamp to generate a light pulse to trigger said thyristor via said light guide.
Claim 3
Dependent Claim
41 words
A device as claimed in claim 1, wherein said flashlamp has a plasma channel, and wherein said housing consists of metal at least in the region surrounding said plasma channel for use as an ignition electrode connected to said circuit means.
Claim 4
Dependent Claim
34 words
A device as claimed in claim 1, wherein said interior of said housing has a larger diameter than said flashlamp so as to permit introduction of a coolant between said housing and said flashlamp.
Claim 5
Dependent Claim
52 words
A device as claimed in claim 1, wherein said housing has electrically conductive end sections adapted for connection to a power source, and wherein said flashlamp has an electrically conductive leaf spring at each end thereof, said leaf springs being respectively received in and pressing against said end sections of said housing.
Claim 6
Dependent Claim
58 words
A device as claimed in claim 1, wherein said flashlamp has a plasma channel having a length and a diameter, and wherein the ratio of said length to said diameter of said plasma channel is in the range of 60:1 through 140:1, and the length of said plasma channel is in the range of 20 through 150 mm.
Claim 7
Dependent Claim
31 words
A device as claimed in claim 1, wherein said flashlamp has a plasma channel disposed between two enlarged ends, each end having an electrode therein disposed immediately adjacent said plasma channel.
Claim 8
Dependent Claim
55 words
A device as claimed in claim 1, wherein said circuit means comprises: a first current source means connected to said flashlamp for generating a simmer current for pre-ionizing but not igniting said flashlamp; and a second current source means connectable to said flashlamp through a switch for igniting said flashlamp upon closure of said switch.
Claim 9
Dependent Claim
63 words
A device as claimed in claim 7, wherein said circuit means further comprises a third current source means connected in parallel with said second current source means after closure of said switch, said second current source means causing generation of a light pulse by said flashlamp and said third current source means causing generating by said flash lamp of a trailer to said
Claim 10
Independent Claim
103 words
A device for triggering a plurality of thyristors, each thyristor having a light sensitive trigger electrode, said device comprising: an elongated flashlamp; a tubular housing having a hollow interior in which said flashlamp is disposed, said housing having a plurality of radial channels therein leading from an exterior of said housing to said interior; a plurality of light guides respectively disposed in said channels, each light guide optically coupling said interior of said housing with the trigger electrode of one of said thyristors; and circuit means for igniting said flashlamp to generate a light pulse to trigger said thyristors via said light guides.
Claim 11
Independent Claim
103 words
A device for triggering a plurality of thyristors, each thyristor having a light sensitive trigger electrode, said device comprising: an elongated flashlamp; a tubular housing having a hollow interior in which said flashlamp is disposed, said housing having a plurality of radial channels therein leading from an exterior of said housing to said interior; a plurality of light guides respectively disposed in said channels, each light guide optically coupling said interior of said housing with the trigger electrode of one of said thyristors; and circuit means for igniting said flashlamp to generate a light pulse to trigger said thyristors via said light guides.
Claim 12
Independent Claim
130 words
A device for triggering a plurality of thyristors, each thyristor having a light-sensitive trigger electrode, said device comprising: an elongated flashlamp; a tubular housing having a hollow interior in which said flashlamp is disposed, said housing having a plurality of radial channels therein leading from an exterior of said housing to said interior; a sleeve surrounding said tubular housing having a like plurality of channels therein respectively and registry with the channels in said housing; a plurality of light guides respectively disposed in said channels of said housing and said sleeve, each light guide optically coupling said interior of said housing with the trigger electrode of one of said thyristors; and circuit means for igniting said flashlamp to generate a light pulse to trigger said thyristors via said light guides.
Claim 13
Independent Claim
130 words
A device for triggering a plurality of thyristors, each thyristor having a light-sensitive trigger electrode, said device comprising: an elongated flashlamp; a tubular housing having a hollow interior in which said flashlamp is disposed, said housing having a plurality of radial channels therein leading from an exterior of said housing to said interior; a sleeve surrounding said tubular housing having a like plurality of channels therein respectively and registry with the channels in said housing; a plurality of light guides respectively disposed in said channels of said housing and said sleeve, each light guide optically coupling said interior of said housing with the trigger electrode of one of said thyristors; and circuit means for igniting said flashlamp to generate a light pulse to trigger said thyristors via said light guides.
References Cited (Backward Citations)
US2906901A
Cited
DE1538116A1
Cited
DE2514528A1
Cited
US4561429A
Cited
EP0144645A2
Cited
US4680505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |