Power supply

Details Power supply Power supply

1988-05-11

1990-04-24

Laroche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315226, 315307, 315DIG5, H05B 4124

Patent

active

049203002

ABSTRACT:
Arc discharge lamps driven at frequencies in excess of 20 kHz may exhibit the phenomenon of `acoustic resonance` in which longitudinal and lateral acoustic waves are supported in the arc tube. This is a problem because the acoustic wave may give rise to an instability in the discharge arc, causing it to stretch or gyrate and invariably to extinguish. In some cases damage may be caused to the arc tube. A power supply suitable for an arc discharge lamp comprises a drive circuit arranged to supply voltage to the lamp and control means for causing a characteristic of the voltage to vary, with time, in accordance with a pseudo random sequence in order to reduce, or eliminate, acoustic resonance in the lamp.

REFERENCES:
patent: 3506876 (1970-04-01), Antonich
patent: 3719857 (1973-03-01), Sharp
patent: 4064414 (1977-12-01), Bergeson et al.
patent: 4373146 (1983-02-01), Bonazoli et al.
patent: 4705991 (1987-11-01), Ganser et al.

Affiliated with

Also associated with

Rating

Power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-36005