US3673504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser with combined q-switch and synchronized cavity dump circuit
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1969-12-23
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Granted: 1972-06-27
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Expires: 1989-12-23
Abstract
Abstract A high voltage electrical waveform generator circuit is provided which generates a voltage waveform having a positive d.c. voltage leading edge and a negative d.c. voltage trailing edge to the modulator. A gas trigger tube is provided in the circuit which generates a positive d.c. voltage leading edge in its plate circuit when it is independently triggered by a trigger signal. Another gas trigger tube generates a positive voltage when it is triggered by another trigger signal. A coupling circuit which couples the plate circuits of the trigger tubes includes capacitor which converts the positive voltage generated by the other trigger tube into the negative d.c. voltage trailing therefor edge of the voltage waveform. The coupling circuit may also include differentiator which allows the voltage levels on the trigger tube plates to be independently varied without affecting each other.
Inventors
- 👤 Ronald P Hilberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:46
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/52; G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0327; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/115; H01S3/1127
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
273 words
A circuit for rapidly switching a high voltage and providing an output voltage wave with precisely determined leading and trailing edges, said circuit comprising: a voltage storage capacitor having a first terminal adapted to be connected to capacitive load; a first trigger gas switch tube having an anode; first circuit means for coupling said first tube across the load and for connecting the anode of said first tube to said first terminal of said capacitor; a first source of direct-current voltage connected by said first circuit means to the anode of said first tube for charging said capacitor to a first predetermined voltage, said first tube being responsive to a first trigger signal for discharging said first predetermined voltage of said capacitor at said first terminal; a second trigger gas switch tube having an anode; second circuit means for coupling said second tube across the load and the anode of said second tube to the other terminal of said capacitor; and a second source of direct-current voltage connected by said second circuit means to the anode of said second tube for applying a second predetermined voltage to said other terminal of said capacitor, said second tube being responsive to a second trigger signal for discharging said second predetermined voltage at said other terminal of said capacitor, whereby when a first trigger signal is applied to said first tube a first voltage across the load is rapidly reduced to a first predetermined level, and whereby application of the second trigger signal to said second tube will rapidly change the voltage across the load to a second voltage of opposite polarity to said first voltage.
Claim 2
Dependent Claim
273 words
A circuit for rapidly switching a high voltage and providing an output voltage wave with precisely determined leading and trailing edges, said circuit comprising: a voltage storage capacitor having a first terminal adapted to be connected to capacitive load; a first trigger gas switch tube having an anode; first circuit means for coupling said first tube across the load and for connecting the anode of said first tube to said first terminal of said capacitor; a first source of direct-current voltage connected by said first circuit means to the anode of said first tube for charging said capacitor to a first predetermined voltage, said first tube being responsive to a first trigger signal for discharging said first predetermined voltage of said capacitor at said first terminal; a second trigger gas switch tube having an anode; second circuit means for coupling said second tube across the load and the anode of said second tube to the other terminal of said capacitor; and a second source of direct-current voltage connected by said second circuit means to the anode of said second tube for applying a second predetermined voltage to said other terminal of said capacitor, said second tube being responsive to a second trigger signal for discharging said second predetermined voltage at said other terminal of said capacitor, whereby when a first trigger signal is applied to said first tube a first voltage across the load is rapidly reduced to a first predetermined level, and whereby application of the second trigger signal to said second tube will rapidly change the voltage across the load to a second voltage of opposite polarity to said first voltage.
Claim 3
Dependent Claim
40 words
A circuit as defined in claim 1 wherein a differentiator circuit is coupled between the anode of said second tube and the other terminal of said capacitor for preventing changes of said first voltage from affecting said second predetermined voltage.
Claim 4
Dependent Claim
37 words
A circuit as defined in claim 1, wherein a voltage doubler circuit is coupled between the anode of said second tube and the other terminal of said capacitor for increasing the magnitude of said second predetermined voltage.
Claim 5
Dependent Claim
19 words
A circuit as defined in claim 3, wherein said voltage doubler circuit includes a predetermined length of coaxial cable.
Claim 6
Dependent Claim
113 words
In combination: a first trigger gas switch tube having an anode adapted to be connected to a first source of variable d.c. voltage supplying a first predetermined voltage at the anode, said first tube being responsive to a trigger signal for eliminating said voltage at the anode; a second trigger gas switch tube having an anode connected to a second source of variable d.c. voltage supplying a second predetermined voltage at the second tube anode, said second tube being responsive to a trigger signal for eliminating said second voltage at the second tube anode; and circuit means interconnecting said anodes, said circuit means comprising a capacitor and a differentiator arranged in series connection.
Claim 7
Dependent Claim
113 words
In combination: a first trigger gas switch tube having an anode adapted to be connected to a first source of variable d.c. voltage supplying a first predetermined voltage at the anode, said first tube being responsive to a trigger signal for eliminating said voltage at the anode; a second trigger gas switch tube having an anode connected to a second source of variable d.c. voltage supplying a second predetermined voltage at the second tube anode, said second tube being responsive to a trigger signal for eliminating said second voltage at the second tube anode; and circuit means interconnecting said anodes, said circuit means comprising a capacitor and a differentiator arranged in series connection.
Claim 8
Dependent Claim
116 words
In combination: a first trigger gas switch tube having an anode adapted to be connected to a first source of variable d.c. voltage supplying a first predetermIned voltage at the anode, said first tube being responsive to a trigger signal for eliminating said voltage at the anode; a second trigger gas switch tube having an anode connected to a second source of variable d.c. voltage supplying a second predetermined voltage at the second tube anode, said second tube being responsive to a trigger signal for eliminating said second voltage at the second tube anode; and circuit means interconnecting said anodes, said circuit means comprising a capacitor, a coaxial cable, and a differentiator arranged in series connection.
Claim 9
Dependent Claim
116 words
In combination: a first trigger gas switch tube having an anode adapted to be connected to a first source of variable d.c. voltage supplying a first predetermIned voltage at the anode, said first tube being responsive to a trigger signal for eliminating said voltage at the anode; a second trigger gas switch tube having an anode connected to a second source of variable d.c. voltage supplying a second predetermined voltage at the second tube anode, said second tube being responsive to a trigger signal for eliminating said second voltage at the second tube anode; and circuit means interconnecting said anodes, said circuit means comprising a capacitor, a coaxial cable, and a differentiator arranged in series connection.
References Cited (Backward Citations)
US3105169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |