Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Load device irradiating the radiant energy responsive device
Patent
1994-12-27
1996-02-06
Pascal, Robert J.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Load device irradiating the radiant energy responsive device
315248, 331 3, 331109, H03L 102
Patent
active
054898218
ABSTRACT:
An apparatus for providing excitation of a vapor discharge lamp includes a control circuit for controlling an oscillator circuit during an ignition mode of the vapor discharge lamp to establish and maintain a substantially constant DC voltage at an output of an oscillator transistor and to establish a current flow through the oscillator transistor at a first current level sufficient to ignite the vapor discharge lamp, and for controlling the oscillator after ignition of the vapor discharge lamp to maintain the substantially constant DC voltage at the output of the oscillator transistor while reducing the current flow through the oscillator transistor from the first current level to a second current level, and in preferred embodiments, includes circuitry to suppress unwanted blocking oscillations and optimize the dynamic range of the control circuitry.
REFERENCES:
patent: 2975330 (1961-03-01), Bloom et al.
patent: 3109960 (1963-11-01), Bell et al.
patent: 3129389 (1964-04-01), Packard et al.
patent: 3192472 (1965-06-01), Bender et al.
patent: 3382452 (1968-05-01), Rempel et al.
patent: 3390350 (1968-06-01), Davidovits et al.
patent: 3403349 (1968-09-01), Wieder
patent: 3513381 (1970-05-01), Happer, Jr.
patent: 3584292 (1971-06-01), Dehmelt
patent: 3798565 (1974-03-01), Jechart
patent: 3815048 (1974-06-01), Hamlet
patent: 3873884 (1975-03-01), Gabriel
patent: 3903481 (1975-09-01), Jechart
patent: 4095142 (1978-06-01), Murayama et al.
patent: 4314208 (1982-02-01), Munday
patent: 4349798 (1982-09-01), Podell et al.
patent: 4405905 (1983-09-01), Busca et al.
patent: 4434406 (1984-02-01), Fowks
patent: 4446446 (1984-05-01), Fowks
patent: 4456891 (1984-06-01), Fowks
patent: 4462006 (1984-07-01), Fowks
patent: 4476445 (1984-10-01), Riley, Jr.
patent: 4479096 (1984-10-01), Fowks
patent: 4485333 (1984-11-01), Goldberg
patent: 4494085 (1985-01-01), Goldberg
patent: 4495478 (1985-01-01), Kwon et al.
patent: 4629887 (1986-12-01), Bernier
patent: 4661782 (1987-04-01), Weidemann
patent: 4721890 (1988-01-01), Riley, Jr.
patent: 4899345 (1990-02-01), Cyr et al.
patent: 4947137 (1990-08-01), Busca et al.
patent: 4968908 (1990-11-01), Walls
patent: 5101506 (1992-03-01), Walls
patent: 5172064 (1992-12-01), Walls
patent: 5327105 (1994-07-01), Liberman et al.
Eltsufin, Stern, and Fel, "Compact Rectangular-Cylindrical Cavity for Rubidium Frequency Standard," IEEE Forty-Fifth Annual Symposium on Frequency Control, 1991, pp. 567-571.
Busca et al., "Long-term Frequency Stabilization of the Rb.sup.87 Maser," 24 IEEE Transactions on Instrumentation and Measurement 291-96 (Dec. 1975).
Matsuda et al. "Signal Intensity Characteristics of the .sup.87 Rb Double Resonance Due to the Pumping Light", Japanese J. of Appl. Physics, vol. 16, No. 3, Mar. 1977, pp. 391-396.
Kuramochi et al., "Composite-type .sup.87 Rb Optical-Pumping Light Source", Optics Letters, vol. 6, No. 2, Feb., 1981, pp. 73-75.
Mathur et al., "Light Shifts in the Alkali Atoms" Physical Review, vol. 171, No. 1, 5 Jul. 1968, pp. 11-19.
Audoin et al., "Atomic Frequency Standards and Clocks", J. of Physics E. Scientific Instruments, vol. 9, No. 9 (1976, Sep.), pp. 697-720.
Ball Corporation
Pascal Robert J.
Shingleton Michael
LandOfFree
Lamp oscillator for atomic frequency standards does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lamp oscillator for atomic frequency standards, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lamp oscillator for atomic frequency standards will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2176981