Re: [CAD_CAM_EDM_DRO] Re: Building an EDM - switching

turbulatordude wrote:

>Hi Geir,
>
>Seems Richard is no where to be found.
>
>As I understand the rumors, he is working on book # 2 complete with
>wire EDM and possibly more circuits.
>
>If I can guess, he will first do a series of articles then publish
>the book. That would mean about a year after the first article.
>
>Writers for some mags get $$ per article and his last set was 6.
>since they come every 2 months, I'm expecting 12 months for the
>series, then the book.
>
>I am working on the circuit that uses a pair of MOSFET's and hope to
>have some people with some expertise review it to make sure it is
>workable.
>
>I did notice that the switching transistors did not seem to have a
>ground (or common-ground as we say on here) so as laid out, would not
>work.
>
>I figured on using a trio of photo-flash caps, 120uF so they could
>be wired for 40uF, 80uF or 120uF.
>
>

If you are using a pulser, you don't need to vary the capacitor banks.

>Are you well versed in electronic circuits ?
>Anybody else on the list well versed and want to review the
>schematic ?
>
>

I'd be glad to. I have a rough design in my head, but haven't gotten enough
time to build it. I have designed my own switching servo amps, so I'm quite
familiar with MOSFET power circuits.

Jon