Re: [CAD_CAM_EDM_DRO] VFD

Miroslav Pejic wrote:

>Hello group members,
>Does anyone have a schematic to build VFD?
>
>

Yes, International Rectifier has "kits" for building a copy of their
reference design for a couple of VFD models. You could probably get
a full schematic from the applications notes on those.

But, I should warn you, these things are REALLY complex device,
with sensitive 5 V electronics right next to 400 V pulses with rise
times of 10 KV/usecond. Also, when things go wrong, they do so
explosively, destroying $40 or more of semiconductors instantly.
You pretty much can't get away from a fast microcontroller to
coordinate all this, either.

Jon