Power supply circuit

Details Power supply circuit Power supply circuit

1994-09-19

1996-11-26

Pascal, Robert J.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

315243, 315209R, 315219, H05B 4116

Patent

active

055789072

ABSTRACT:
A power supply circuit for a fluorescent lamp. The circuit includes a switching power supply, such as a square wave switching power supply and a load current smoothing capacitor. A fluorescent tube is connected between the switching power supply and the load current smoothing capacitor. A linking connection from the switching power supply to a main voltage supply includes a rectifier. A first diode is connected between the rectifier and the linking connection, while a second diode is connected between the load current smoothing capacitor and the load. A single current path to the load current smoothing capacitor is defined through the second diode, while a single current discharge path from the load current smoothing capacitor is defined through the first diode. Two stabilizing capacitors are provided that are connected across the switching power supply to stabilize the duty cycle of the power supply circuit, with the load being located between the two stabilizing capacitors. An inductor, connected between the rectifier and a main voltage supply input, is provided to smooth switching noise that may arise.

REFERENCES:
patent: 4109307 (1978-08-01), Knoll
patent: 5041766 (1991-08-01), Fiene et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1975622