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Methods for limiting inrush current in rectifier bridge

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mrinalmani

mrinalmani

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Hi!
I have a 230V 2A rectifier bridge whose DC side is connected to a 300uF capacitor. At the instant AC power is switched into the bridge, there may be a large inrush current. What are the methods to control inrush? I would prefer not using an inductor if possible.

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Mrinal
 

The usual methods are NTC current limiter and resistor bypassed by a contactor.
 
yes, and you can have a zero crossing detector and only switch on at the mains zero crossing if you want.
And you can do as FvM but use transistor to switch out the inrush resistor.
 
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That's of course possible, but I don't think that transistor inrush limiter for passive rectifier bridges can be rated as usual method.
 

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