US4041351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash lamp power supply with direct energization from an AC power supply source
Assignee: Raytheon Co
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Filing: 1975-08-04
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Granted: 1977-08-09
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Expires: 1995-08-04
Abstract
Abstract A method of energizing a laser source stimulating flash lamp directly from an AC power line. Uncontrolled diodes couple the anode and cathode of the flash lamp directly to the AC line. The lamp is triggered by a separate triggering circuit which produces its trigger pulse at a predetermined phase of the AC power source. The use of high current carrying controlled rectifiers and large energy storage devices is thereby eliminated.
Inventors
- 👤 David R. Whitehouse
- 👤 David W. Hartshorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:52
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; H05B41/34
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
In combination: uncontrolled rectifying means for coupling one or more means for producing radiation to a source of alternating power, said radiation producing means operating upon application thereto of a trigger signal, and said radiation producing means drawing the major portion of operating power directly from said alternating power source with no substantial energy storage means located therebetween; and means for producing said trigger signal at a predetermined phase angle of said alternating power source.
Claim 2
Dependent Claim
75 words
In combination: uncontrolled rectifying means for coupling one or more means for producing radiation to a source of alternating power, said radiation producing means operating upon application thereto of a trigger signal, and said radiation producing means drawing the major portion of operating power directly from said alternating power source with no substantial energy storage means located therebetween; and means for producing said trigger signal at a predetermined phase angle of said alternating power source.
Claim 3
Dependent Claim
12 words
The combination of claim 1 wherein said rectifying means comprises semiconductor diodes.
Claim 4
Dependent Claim
24 words
The combination of claim 1 wherein said means for producing said trigger signal comprises means for sensing the phase of said alternating power source.
Claim 5
Dependent Claim
16 words
The combination of claim 1 wherein said radiation producing means comprises means for ionizing a gas.
Claim 6
Dependent Claim
14 words
The combination of claim 4 wherein said radiation producing means comprises a flash lamp.
Claim 7
Dependent Claim
26 words
The combination of claim 5 wherein said flash lamp comprises a xenon flash lamp, said xenon flash lamp being located adjacent to laser light producing means.
Claim 8
Dependent Claim
125 words
In combination: means for producing light by ionization of a gas; uncontrolled rectifying means coupling said light producing means to a source of power, said source of power having a plurality of phases, no substantial energy storage means being located between said source of power and said light producing means, and said gas of said light producing means capable of being ionized at less than the peak voltage of said source of power; and means for initiating said ionization at a predetermined phase angle of one of said phases, said ionization being continuously sustained by said source of power for a period of time longer than the time period of a half-cycle of any phase of said plurality of phases of said source of power.
Claim 9
Dependent Claim
125 words
In combination: means for producing light by ionization of a gas; uncontrolled rectifying means coupling said light producing means to a source of power, said source of power having a plurality of phases, no substantial energy storage means being located between said source of power and said light producing means, and said gas of said light producing means capable of being ionized at less than the peak voltage of said source of power; and means for initiating said ionization at a predetermined phase angle of one of said phases, said ionization being continuously sustained by said source of power for a period of time longer than the time period of a half-cycle of any phase of said plurality of phases of said source of power.
Claim 10
Dependent Claim
17 words
The combination of claim 7 wherein said source of power has three phases, said phases being Y-connected.
Claim 11
Dependent Claim
17 words
The combination of claim 7 wherein said source of power has three phases, said phases being delta-connected.
Claim 12
Dependent Claim
18 words
The combination of claim 7 wherein said ionization initiating means comprises means for producing a high voltage pulse.
Claim 13
Dependent Claim
21 words
The combination of claim 10 wherein said high voltage pulse is coupled to a triggering electrode of said light producing means.
Claim 14
Dependent Claim
27 words
The combination of claim 10 wherein said pulse is applied to the same electrodes of said light producing means to which said source of power is coupled.
Claim 15
Dependent Claim
21 words
The combination of claim 10 further comprising means for applying a predetermined number of said pulses to said light producing means.
Claim 16
Dependent Claim
42 words
The combination of claim 13 wherein said applying means comprises in combination: means for counting the number of said pulses; and switch means for coupling said pulses to said light producing means, said switch means operating in response to said counting means.
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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |