[sdiy] VCO reset time

[Antti Huovilainen]

On Sun, 6 Jun 2004, Don Tillman wrote:

> The topic is PWM from a triangle vs. PWM from a sawtooth.

Isn't sawtooth based PWM same as triangle PWM that is phase modulated?
Pulse wave is equal to two sawtooth waves with delay and opposite phases.
In triangle based PWM you phase modulate both saws in opposite directions,
while in sawtooth based PWM you only modulate one saw. Thus to me it seems
that sawtooth PWM is same as PWM but in addition to changing the pulse
width (as with triPWM) you also change the midpoint of the pulse
(same as phase modulating the triPWM).

Antti

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