Electric lamp and discharge devices: systems – Plural load device systems – Electric switch in the supply circuit
Patent
1985-07-15
1990-01-09
Safourek, Benedict V.
Electric lamp and discharge devices: systems
Plural load device systems
Electric switch in the supply circuit
315312, 315324, 315DIG5, 250504R, H05B 4100
Patent
active
048930644
ABSTRACT:
A fluorescent lamp operating system for a skin treatment apparatus comprises: (i) a plurality of pairs of fluorescent lamps for providing luminous radiation, each pair of lamps being adapted to be powered from 30 kHz/120 Volt by way of a high-Q series-resonant L-C ballasting circuit; (ii) a relatively low-power frequency converter connected with the power line and operable to provide power for heating the cathodes in these fluorescent lamps, thereby conditioning the lamps for easy starting; (iii) a relatively high-power frequency converter also connected with a power line and operable to provide the 30 kHz/120 Volt required for operating the plurality of pairs of fluorescent lamps by way of the high-Q series-resonant L-C ballasting circuit; and (iv) delay means operable to prevent the 30 kHz/120 Volt provided by the high-power frequency converter from being applied to the fluorescent lamps until after power has been applied to heat the lamp cathodes for at least one second. Each high-Q series-resonant L-C ballast circuit is protected from over-voltages by a Varistor, which acts as a substitute load in case a lamp is removed or fails to operate properly. If current should flow through the Varistors for more than about 50 milli-seconds, a short circuit is placed across that Varistor, thereby protecting that Varistor from destruction without affecting the operation of the other L-C ballast circuits.
REFERENCES:
patent: 4438372 (1984-03-01), Zuchtriegel
patent: 4499403 (1985-02-01), Leppelmeier et al.
Safourek Benedict V.
Salindong T.
LandOfFree
Operating system for skin treatment apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Operating system for skin treatment apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Operating system for skin treatment apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-147026