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malay321
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Join Date: May 2009
Posts: 32

Filter Desin for an Inverter Circuit

01/26/2012 11:46 PM

I am design a filter without any load. It gives output perfectly a sin wave. But waveform becomes distorted when i applied load. So please tell me the design procedure of filter which will be independent of load
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mjb1962853
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Engineering Fields - Electrical Engineering - Analog and Digital Circuit Design Engineering Fields - Electromechanical Engineering - Transformers, Motors & Drives, EM Launchers Engineering Fields - Engineering Physics - Applied Electrical, Optical, and Mechanical

Join Date: Jan 2008
Location: NY
Posts: 1207
Good Answers: 119
#1

Re: Filter Desin for an Inverter Circuit

01/29/2012 9:32 AM

Active filters, those designed around op-amps for example, are mostly load independent. As long as the op-amp can drive the load, the filter characteristics should be close to ideal.

Passive filters, those using only resistors/capacitors/inductors, MUST be designed for a specific load impedance. As the load impedance changes, so will the filter characteristics.
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