Re: Wattmeter

• To: tesla-at-pupman-dot-com
• Subject: Re: Wattmeter
• From: Scott Stephens <Scott2-at-mediaone-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Thu, 21 Jan 1999 11:23:15 -0700
• Approved: twf-at-verinet-dot-com

At 03:10 AM 1/21/99 -0700, you wrote:

>
>Optoisolated wattmeter was in Electronic Design originally.
>
>3.  The op-amp output of 2 feeds a baragraph display consisting of
>    (5) LM3914 bargraph display driver IC's which feed 50 LEDs in a
>    semicircular configuration.  Additional LEDS and switches are
>4.  Op amp in 2 also feeds a small DVM which read 0.0 to 10.0 which
>    corresponds to 0-10kW)
>6.  Estimated cost of entire system: <$150.
>

The wattmeter at http://www.microchip-dot-com/10/Appnote/Listing/index.htm,
(PICREF-3 Watt Hour Meter) 30452a.pdf

Would be far better for less, if a bunch of us ganged up to get the PCB's &
parts.

• Prev: Re: Resonance
• Next: Re: Primary Coil (and cap?) INSIDE Secondary Coil
• Index(es):
  • Main
  • Thread