electronic ballast
An electronic ballast and ballast technology, applied in the field of electric lighting
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[0022] In order to make the objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0023] figure 1 It is a circuit block diagram of an electronic ballast in an embodiment, including a filter circuit 10, a rectifier circuit 20, a power factor correction circuit 30, and a charge pump power supply circuit 60 connected in sequence, and also includes an output stage circuit 50 and a ballast control circuit 40 . Dimming interface circuit 70 , ballast interface 90 and dimming control circuit 80 . The filter circuit 10 filters the input AC power of 220 volts and then outputs it to the rectifier circuit 20. After the rectification process is performed by the rectifier circuit 20, the power factor correction circuit 30 performs power factor correction and then outputs a 450-volt DC power to meet electromagnetic compatibility require...
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