Re: Converting Heidenhain Scale to sq wave

--- In CAD_CAM_EDM_DRO@y..., JanRwl@A... wrote:

> In a message dated 19-Aug-02 19:27:14 Central Daylight Time,
> bdrmachine@h... writes:
>
>
> > Question: Has anyone converted this signal to 5 volt TTL levels?
> > If so please share the circuit diagram with me. If not (after I
> > reinvent the wheel) I will follow up with a future post and let

you

> > all know what I found out.
> >
> Brian: Nothing magic here! Just run the signals through a

74HCT14 or

> 74HCT541, Schmidt Triggers, and let the chip do the work!
>
> The '14 in inverting, so you might have to use TWO gates per input

to

> "re-invert" the signal so you have non-inverting. But in

the '541, you have

> EIGHT non-inverting buffers!
>
> If you haven't a clue about such, get Don Lancaster's CMOS

Cookbook. It had

> gobs of data and "how-to", but the "data sheets" for IC's in it is

outdated.

> There are many more now available (such as the cited '541) not in

the book.

>
> Jan Rowland
>
>
>

Thanks Jan I appreciate the reply.
Isn't the output of this scale a zero referenced current sine wave???
If it is wouldn't you have to condition the output first before
driving a schmitt trigger or buffer?

Thanks
Brian
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