Pure Sine Wave
May 29
2009
2009
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How to make a Pure sine wave out of the inverter using L an C filters?
I have a brige Switching at 50KHZ (sine wave pwm Controler) .I dont know what value of inductors an caps to put to get pure sine wave Output should give 600W 230VRMS
What is the frequency of the desired sine wave?
Assuming 50Hz, and <1% distortion, you need >40dB attenuation, therefore a corner frequency of 5kHz max. Many combination of LC can do the job. Choose L for reasonable core loss. Therefore 100uH < L < 1000uH.
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