RE: control panel measurments

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

Original poster: "Luke" <Bluu-at-cox-dot-net> 

Thanx
I might have to get one of them and hook it up when the time comes.
Judging form the numbers on the link you sent am I getting the picture
right?
VA is the voltage X current and would be considered the apperrent power?
Power would be the actual usable power taking the power factor into
consideration?

And is there anything special you would recommend to help protect this
thing if I play with it for TC use?

Luke Galyan
Bluu-at-cox-dot-net
http://members.cox-dot-net/bluu

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Friday, February 27, 2004 3:09 PM
To: tesla-at-pupman-dot-com
Subject: Re: control panel measurments

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Luke,

See:

http://www.themeterguy-dot-com/advertising/Kill%20A%20Watt/killawatt.htm

I have killed them in Tesla coil use, but they are pretty tough in
general.  They work very well!!

Be aware that all the internal circuits are live AC and you should not
hook
into them without being very careful!!  They may be like 5 volt logic
stuff
but they are still 180V above ground!!

Cheers,

          Terry


At 12:27 PM 2/27/2004, you wrote:
 >I recently saw a device in C Crane catalog.
 >It was called the Kill A Watt.  It is something you plug into the wall
and
 >then plug something into it.
 >The literature stated it could measure the volts, amps, watts and
 >frequency.  It also said it could measure the power factor and VA of
what
 >ever was pluged into it.
 >
 >This raises a couple questions.
 >First what technically is the difference between VA and watts?  I
thought
 >it was the same thing.
 >Or does one have to do with power factor?
 >Is power the apparent power (not taking the power factor into
 >consideration and VA the real power or vice versa?
 >Or is there something else I am missing on this?
 >
 >
 >The next question is can I build a control panel that will give me
these
 >values for my TC?
 >What I would like to see on my panel is measurements of the primary
side
 >of my NST bank.
 >The values would be volts, amps, true power, apparent power and the
power
 >factor.
 >If it is a huge undertaking then I probably will not go for it just yet

 >but if any of this can be obtained in a fairly simple manner I would
like
 >to incorporate it into the coil I am designing now.  I know voltage and

 >amps is pretty easy just throw in a ct for the current and use panel
mount
 >meters to read the voltage to the NSTs and the output of the ct for
 >current.  It is the power and power factor portion of this that has me
at
 >a bit of a loss.
 >
 >Any one have some input for me?
 >
 >Luke Galyan
 ><mailto:Bluu-at-cox-dot-net>Bluu-at-cox-dot-net
 >http://members.cox-dot-net/bluu
 >