Bi-pulse convertor (ON-topic)

[harry]

IC's ???

I'd use Tubes !!!

seriously I don't know. I havent seen the actual schematic, just Magnus'
ASCII one.  A lot depends on the actual output method. Most "comparators"
have that open collector output stage and I think I'd prefer a totem pole and
the diode steering suggested...

H^)  harry

KA4HJH wrote:

> >Or use an op-amp that does not "DO" that.
>
> Ian's original circuit used 748's for the comparators and 307's for
> everything else.
>
> What IC's would you use if building this particular gadget today? I'm
> especially curious about the comparators. Let's assume that the inputs are
> not going to be *deliberately* overdriven...
>
> --
> Terry Bowman, KA4HJH
> "The Mac Doctor"