Hi andre,

There were more than 20 posts on this thread.
Scott Dattalo, Olin Lathrop, Jinx and others were involved.
These gentlemen do deserve to be held in respect.

Could you post few words in conclusion, please.

Mike.


> Sent: Thursday, August 07, 2003 6:19 AM
> To: PICLIST@MITVMA.MIT.EDU
>
> Hey andre,
>
> Why not just PWM at 60 Hz? (Did you hear of PWM?)
> Invert every other pulse.
>
> Mike.
>
> andre abelian wrote:
> > Main idea for counting from 0-360 is that there are 4
> > Pulses top 2 and bottom 2 they run at 60hz no matter what
> > And they move right and left.
> > Their normal startup looks like this:
> > Top2 starts at 180degree and bottom 2 starts at 28degree now
> That's
> > when x register=28 default. When x register changes becomes 29
> top 2
> > pulses moves 1 degree left which is 179 degree and bottom 2 moves >
1
> > degree right becomes 29 degree. 60 hz never gets changed. Top2 and
> > bottom2 they are inverted from each other this is how inverters
> > generate sinusoid. It looks like 47,25 us is ok to use but your
> > calculation is better. I didn't want to talk about
> >
> > it in detail because people do not want to read long e-mail. After >
all
> > final output looks like this.
> >
> >             <== moves left
> >      B1     T1
> >      |------|                  |------|
> >      |      |                  |      |
> > ------      |-----|      |-----|      |-----
> >                   |      |
> >                   |------|
> >                   B2     T2
> >                 ==> moves right
> >
> > B1 = rising edge of bottom pulse
> > B2 = falling edge of bottom pilse
> > Same thing for T1 and T2.
> > based on battery voltage and current load x register will
> > be updated in order to keep stable 110v 60 hz 40amp sinusoid.

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