[sdiy] Cool 'ring modulator' schematic

[Tim Parkhurst]

On 2/8/06, harrybissell <harrybissell at prodigy.net> wrote:
> in the latest issue of Electronic Design (under Design Briefs)
>
> This is an opamp based design... it would be above the ARP
> 'exclusive or' design but below most true four quadrant
> designs in terms of functionality.
>
> READ the last paragraph... note the schematic says "rf"
> but in reality... 'radio frequency' in this design
> is probably not more than 10KHz   :^P
>
> Still, some may want to play. I might whip one together...
>
> H^) harry
>
************************
Hey Harry,

Could be interesting. Here's a link
http://www.elecdesign.com/Articles/ArticleID/11935/11935.html

The writeup states that the design is 'limited to lower frequencies'
which sounds like it would work for audio just fine. Also looks like
it works with a variety of waveforms (unlike the square-only ARP XOR
design).

Let us know how it works if you knock one out.

Pretty please? ;)

Tim (could be interesting) Servo
--
"Imagination is more important than knowledge." - Albert Einstein