Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent
1989-05-03
1991-03-12
Pascal, Robert J.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Periodic switch cut-out
315307, 315323, 315DIG5, 315DIG7, H05B 3702
Patent
active
049995464
ABSTRACT:
For a starting device to acquire an ability to start a discharge tube efficiently, allow the light from the discharge tube to be regulated effectively over a wide range, and fit versatile use with discharge tubes of a varying kind, this invention causes the frequency of pulses of a fixed duty ratio issued by pulse generating means to be freely adjusted by adjusting means and consequently enables high-voltage applying means to apply a high voltage of a frequency proper for the pulses to the discharge tube and effect efficient and stable start of the discharge tube. Since the frequency of high voltage for application to the discharge tube is adjusted by the adjusting means, the regulation of light is attained over a wide range and the starting device itself is enabled to fit versatile use with discharge tubes of a varying kind. For the starting device employed for starting a plurality of discharge tubes to enjoy a sufficient reduction in weight and volume, sequential potential forming means serves the purpose of sequentially actuating a plurality of high-voltage applying means and consequentially enabling the plurality of discharge tubes to be sequentially started. Thus, the starting device is enabled to start the plurality of fluorescent discharge tubes with the aid of one set of power source and rectifying means. It is, therefore, no longer necessary to use as many power sources and rectifiers as the discharge tubes. Thus, this invention materializes reduction in weight, volume, and cost.
REFERENCES:
patent: 4137484 (1979-01-01), Osteen
patent: 4663570 (1987-05-01), Luchaco et al.
patent: 4749914 (1988-06-01), Feher et al.
Koda Yoshiharu
Takashima Tadashi
Hueschen Gordon W.
Kabushiki Kaisha Denkosha
Pascal Robert J.
LandOfFree
Starting device for discharge tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Starting device for discharge tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Starting device for discharge tube will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-450317