In a recent issue of Elektor magazine, they published a 555 based class-D amp with a voltage to current converter, they claim pretty good considering triangle linearity.There was a discussion not too long ago about the possible distortion from a RC triangle wave compared to a linear triangle wave. I'm attempting to see if there is any using my usual graphic approach.
If anyone remembers this thread, such as Ron H, point me to it please.
The RC waveform was done to scale using this thread, and was done to scale. It is as precision as I can make it. It appears there is very little difference between the two, though I would be the first to admit that the resolution is too low.
To me it appears it would be very usable.