He is only a little closer to being able to make a VFD from those
transistors than if he'd start with a bucket of sand..

Bob Swinney
"Richard Ferguson" wrote in message
...
Theoretically possible, but why? You can buy a speed controller with soft
start, dynamic braking, and dozens of features, that also converts single
phase to to 3 phase, for $200 or so. Why bother to make your own, which
will take many hours, might or might not work well, might or might not
fail catastrophically, and will never have all the features of a
commerical speeed controller?

Richard


Ignoramus17647 wrote:
I am thinking about my high capacity transistors. Supposedly they can
be used for making inverters.

What if I build something like this:

1) a 220V to 208 V transformer

fed into 2) a rectifier

fed into

3) three DC to AC inverters that have their outputs shifted by 120
degrees relative to one another.

Would that not become a phase converter (1 - 3 phase)?

i