Hi Neil,

After you fire one phase, can you not just fire the second and the third after a delay of 3.33 ms and 6.67 ms respectively (for 50 hz)?

The delays would change proportionately for 60 hz, of course.

I have not tried this, but in a different context, this is what all X10 transmitters do to ensure that *all* three phases receive a signal during their own zero crossing.

Regards,

Anand