Electronic ballast with load shed circuit

Details Electronic ballast with load shed circuit Electronic ballast with load shed circuit

H - Electricity

05

B

H05B 41/14 (2006.01) H05B 41/38 (2006.01)

Patent

CA 2512309

An electronic ballast (10) for powering at least one gas discharge lamp (30) includes a current-fed resonant inverter (300) and a load shed circuit (600). Inverter (300) ordinarily powers the lamp at a first level. When a load shed command is sent by the electric utility and received by an associated load shed receiver within the ballast (10), load shed circuit (600) causes the inverter to reduce the lamp power from the first level to a second level. Preferably, load shed circuit (600) includes an isolation circuit (620) and a bidirectional switch (640) that is coupled in parallel with a return ballasting capacitor (388) within inverter (300). In the absence of a load shed command, bidirectional switch (640) effectively shunts return ballasting capacitor (388), which causes the lamp to be powered at the first level. In response to a load shed command, bidirectional switch (640) ceases to shunt return ballasting capacitor (388), thereby causing the lamp power to be reduced to the second level.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1708111