Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural cathodes or heaters in the load device
Patent
1975-11-25
1977-04-12
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Plural cathodes or heaters in the load device
315103, 315106, 315244, 315276, 315283, 315289, 315DIG5, H05B 4123
Patent
active
040177610
ABSTRACT:
The invention relates to a capacitively stabilized discharge lamp shunted by a coil. During the starting procedure of the lamp the coil is brought into saturation so that, by means of resonance with the capacitive ballast, a high voltage is applied across the lamp to start it.
The B-H magnetization curve of the coil has been chosen so that a transition from the unsaturated condition to the saturated condition also occurs during the operating condition of the device, namely just before the lamp is extinguished during each half cycle of the a.c. supply voltage. Consequently the ratio of the r.m.s. voltage of the a.c. voltage source to the operating voltage of the lamp may be relatively small.
A resistor having a positive temperature coefficient shunts the lamp and is in series with the coil so as to limit the electric current if the lamp refuses to start.
REFERENCES:
patent: 3701925 (1972-10-01), Nozawa et al.
patent: 3753037 (1973-08-01), Kaneda et al.
patent: 3851209 (1974-11-01), Murakami et al.
patent: 3866088 (1975-02-01), Kaneda et al.
patent: 3942069 (1976-03-01), Kaneda
Franzblau Bernard
LaRoche Eugene R.
Trifari Frank R.
U.S. Philips Corporation
LandOfFree
Electric device for starting and supplying a gas-and/or vapor di does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric device for starting and supplying a gas-and/or vapor di, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric device for starting and supplying a gas-and/or vapor di will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1283133