Tuesday, December 2, 2008

Variable Frequency Three Phase Sine Wave Generator

This is a simple three phase sine wave generator circuit using switched capacitor filter. The input to switched capacitor filter is three phase square wave which is generated using flip flop logic driven by a ring counter. The input of ring counter is given by a PLL which is used for frequency and phase Synchrnisation. There is a feed back for controlling output ampliude by controlling square wave amplitude to switched capacitor filter.

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