I found Don Lancaster's Magic Sine Wave info a few years ago, and I'm finally getting around to thinking about building something with them. I'd like to do a low-power 120V inverter (say 10~200W). I started out with a Spice model, which gives me reasonable but ugly results (certainly nothing like what I expect from Don's "all low-order harmonics are zero!")
Am I doing something completely stupid or wrong, or is it just a matter of the somewhat simplified Spice model? Any other suggestions?
In the following picture, the top Magic Sine PWM controls M2 and M3, while the bottom PWM controls M1 and M4.
Am I doing something completely stupid or wrong, or is it just a matter of the somewhat simplified Spice model? Any other suggestions?
In the following picture, the top Magic Sine PWM controls M2 and M3, while the bottom PWM controls M1 and M4.
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