Electronic ballast that manages switching frequencies for extrin

Details Electronic ballast that manages switching frequencies for extrin Electronic ballast that manages switching frequencies for extrin

1998-07-24

1999-08-10

Shingleton, Michael B

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

315307, 315308, 315DIG4, 315DIG7, H05B 3702

Patent

active

059363576

ABSTRACT:
A microprocessor controlled, electronic ballast operates a lamp at nominal settings and shifts the operation of the ballast away from nominal settings to reduce interference. The shift is randomized by a same correction at the same time. On DC input voltage, the frequency of the boost controller is varied to reduce EMI. The ballast operates in bands according to the input voltage. Some bands correspond to full brightness, some to a fixed amount of dimming, and some to a variable amount of dimming. In the event of an abrupt change in load, the microprocessor changes the frequency of the inverter, thereby reducing output power and gradually unloading the boost circuit and maintaining power to the microprocessor.

REFERENCES:
patent: 5089753 (1992-02-01), Mattas
patent: 5422547 (1995-06-01), Brownell
patent: 5680015 (1997-10-01), Bernitz et al.
patent: 5798620 (1998-08-01), Wacyk et al.
Greenfield "Using Microprocessors and Microcomputers The 6800 Family" 1981 p. 10.

Affiliated with

Also associated with

Rating

Electronic ballast that manages switching frequencies for extrin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic ballast that manages switching frequencies for extrin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic ballast that manages switching frequencies for extrin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1123064