Dual cathode beam mode fluorescent lamp

Details Dual cathode beam mode fluorescent lamp Dual cathode beam mode fluorescent lamp

1982-01-04

1983-10-04

Moore, David K.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

313306, 313310, 313350, H01J 2316, H01J 2996, H01J 744, H01J 1346, H01J 1734, H01J 1978

Patent

active

044081413

ABSTRACT:
The lamp shown herein is a beam mode fluorescent lamp for general lighting applications. The lamp comprises a light transmitting envelope, having a phosphor coating on its inner surface, enclosing a pair of thermionic electrodes and a fill material, such as mercury, which emits ultraviolet radiation upon excitation. During application of the first polarity of an AC signal, one electrode acts as a cathode and the other electrode functions as an anode. During the other AC polarity, the electrodes reverse their functions. This invention reduces the requirement for input power to a beam mode discharge lamp without adversely affecting luminous output. This lamp substantially eliminates wasted electron bombardment energy to the anode by use of this energy to help heat the cathode for the next half of the AC cycle. This lamp employs a single power source and may be used in various pre-heat or rapid start configurations.

REFERENCES:
patent: 2441863 (1948-05-01), Zabel
patent: 2946909 (1960-07-01), Morehead
patent: 3013169 (1961-12-01), Gungle et al.

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