[sdiy] Dumb PWM question

[Andre Majorel]

On 2008-02-26 18:51 +0100, jbv wrote:

> I've made a rough schemo with a triangle wave (because it was
> easier & faster than a sine) to show what I have in mind : on
> the 1st part (top) the period ratio is 50%, and it varies in the
> 2 other parts :
> http://jbv.silences.club.fr/sdiy/PMW_example.jpg
> 
> I don't know if your circuit allows that...

In case you wonder what that would sound like, this is a crude
digital approximation of it :

  http://www.teaser.fr/~amajorel/misc/tripwm-100hz.flac

Duty cycle of positive half of triangle goes from 50% to 99% then
down to 1% then back to 50%.

-- 
André Majorel <URL:http://www.teaser.fr/~amajorel/>
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