Asking for help to analize an internal circuit of an LED bulb

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zaizhetian

Joined Aug 30, 2017
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This is my copy of an internal circuit of an LED bulb.



And I don't understang well.
The bridge pile of output voltage should be 310 v,why to meet such a small capacitance?
And input a resistor capacitor specific,what is its effect?

Please help to analyse, thank you!
 

ScottWang

Joined Aug 23, 2012
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