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sine wave inverter filter

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israel7732

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I programmed a pic16f876a with a sine table. it is now working.
.Please can any one tell me the actual formula used for the LC output filter
 


Hi isreal,if you are using pwm technics then you need low pass filter to the carier freq, most of the sine wave inverter i know uses only capacitor and leakeage inductance of the transformer to calculate the cut off frequency but you can follow this link it may help you. also you are wellcome to edaboard forum.
en.wikipedia.org/wiki/Constant_k_filter
 

Here's an extensive list of PDFs and sites, covering virtually all types of active and passive filter design:



You should be able to find the passive filter configuration you wish to implement there.
 

it is a sinewave inverter am talking about. the filter should be at the output ac voltage.
 

Do you have a rough/general schematic of the inverter you are wishing to implement?

Having a look at it would help in recommending a filter design.
 

inverter.jpg
the circuit is simple
 

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