Re: MOT Experiment

• To: tesla-at-pupman-dot-com
• Subject: Re: MOT Experiment
• From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Mon, 26 Oct 1998 20:14:13 -0700
• Approved: terryf-at-verinet-dot-com

Hi Greg,
          If you were surprized by what the DMM told you, wait until 
you look at the primary current on a scope (using sense resistor, 
isolation etc.).  The highly distorted waveform gives peaks *well* in 
excess of the RMS value. Variacs are guaranteed not to like MOTs.

Malcolm

 > Date forwarded: Sat, 24 Oct 1998 12:05:57 -0600
> Date sent:      Sat, 24 Oct 1998 11:02:09 -0600
> To:             tesla-at-pupman-dot-com
> Subject:        MOT Experiment
> Forwarded by:   tesla-at-pupman-dot-com
> From:           Tesla List <tesla-at-pupman-dot-com>

> Original Poster: "Gregory R. Hunter" <ghunter-at-enterprise-dot-net> 
> 
> The other day I wired a DMM set on AC Amps function in series with a 115V
> 600W MOT and measured its magnetizing current.  To my surprise, the thing
> drew 2200ma with no load!  Core CCA is about 2.4 square inches, and based
> on the turns-per-volt of the low voltage filament winding, I calculated its
> primary turns at 132.  I'm no EE, but over 2 amps of magnetizing current
> seems excessive.  If I use four of these to achieve 8KV, they will draw
> almost 9 amps of current with no load.  I like to tinker with MOTs because
> they are cheap and plentiful.  Unfortunately, they also appear to be on the
> very edge of saturation!  I'd still like to try to make a Tesla coil power
> supply with MOTs, even if they are wasteful.
> 
> Greg
 

• Prev: more spooks?
• Next: Orange Jacobs Ladders & more fun with argon
• Index(es):
  • Main
  • Thread