I suspect he meant to say Electronic Design (ED), not EDN. The original
article was in ED 14 Oct 1994, and an improved circuit is in ED 14 Apr
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Wattmeter
> Date: Monday, January 18, 1999 12:22 PM
> Original Poster: fprice3 <fprice3-at-acnet-dot-net>
> Tesla List wrote:
> > Original Poster: David Sharpe <sccr4us-at-erols-dot-com>
> > Terry, John, ALL
> > The original wattmeter which I used was found in EDN magazine; October
> > 14, 1994 edition, "Ideas for Design" segment titled Optical Isolator
> > Computes Watts. I immeditely recognized that this circuit could help
> > stop the banter about my KVA is bigger than your kVA BS and cut to the
> > chase with a parameter which is a primary measurement standard; POWER.
> I searched the EDN Mag database and got this answer:
> " The following matches were found in the EDN Archives for the search
> OPTICAL ISOLATOR
> AND WATTS. The results are ordered with the closest match listed
> Higher scores indicate better
> The search engine found 0 item(s) matching the search criteria"
> Their database only goes back to Jan 1994. Can you pls. give us more
> > The circuits are in the public domain and are probably available by
> > tool (the interthingy). All components are
> > available at MCM or Digikey.
> > Regards
> > DAVE SHARPE, TCBOR
> you are probably right, ave, but I would like a bit more info: do you
> diagram you could post?
> Federico Price