Re: Ammeter Configurations

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Christoph Bohr" <cb-at-luebke-lands.de> 

Hello Tristan

I use pretty much the same setup for my
voltage metering, I just tested it with different
values for R to get propper RMS reading and it
is not too accurate, but good enough for this purpose.
The only problem I had was when the rectifier failed,
probably due to HF peaks. But this was only once.
I am not sure if this is neccessary, but I use a small filter
cap after the recitfier.... maybe unneccessary.
I have not tried this idea for current metering,
but it looks as if it could work....

Good success.

Christoph Bohr

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, October 04, 2004 3:45 PM
Subject: Ammeter Configurations


 > Original poster: "Tristan Steele" <ozonejunkie-at-westnet-dot-com.au>
 >
 > G'day All,
 >
 > I am in the process of trying to work out a way to measure AC
voltage and
 > current flowing into my coil, and have run into a few problems
in the
 > availability (and price) of AC meters.  I have worked out a
method to use
 > the much cheaper DC versions that I can easily get.  Can
someone please
 > offer some advice on if this setup will work, or if I have
missed some vital
 > point. (Wouldn't surprise me!).
 >
 > The schematic can be found at:
 > http://members.westnet-dot-com.au/gemabrown/meterschem.png
 > (Only ~9.73kB)
 >
 > Any guidance would be appreciated,
 >
 > Thanks
 > Tristan
 >
 >
 >