Re: [TCML] Newbie - input regulator

["Paul Brodie" <pbbrodie@xxxxxxxxxxxxx>]

Andrew,
What sort of variac are you looking for? Do you need a small one to use with a reactor? If so, I have a 3 amp variac that doesn't have a case but is otherwise fine. If you are interested, contact me off list and I'll send you some photos of it.
Paul
Think Positive
  ----- Original Message ----- 
  From: andrew 
  To: 'Tesla Coil Mailing List' 
  Sent: Tuesday, November 10, 2009 04:12
  Subject: RE: [TCML] Newbie - input regulator


  Thanks Jim. 
  Ah! That makes sense.
  I'will stick to my crude rotary to start with and see how it goes.
  Been looking for 2nd hand variacs on trade-me. (our equivalent of
  e-bay)without success but I like the idea of the garden wire reactor. Anyone
  got a drawing or picture? 

  Andrew B

  -----Original Message-----
  From: Jim Mora [mailto:wavetuner@xxxxxxxxx] 
  Sent: Tuesday, 10 November 2009 6:16 a.m.
  To: 'Tesla Coil Mailing List'
  Subject: RE: [TCML] Newbie - input regulator

  In My Feeble Memory,

  Richard Quick used to put a RQ gap in series with the RSG to reduce the Gap
  energy on the rotary. 

  Long Sparks,
  Jim Mora

  Hey Richard, drop us a greeting!

    

  -----Original Message-----
  From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
  Of andrew
  Sent: Sunday, November 08, 2009 4:53 PM
  To: tesla@xxxxxxxxxx
  Subject: [TCML] Newbie - input regulator

  Thanks Jim
  I did not recieve your reply to me in the daily list email but found it in
  the website list anyway.
  I shall do more research on sources for mmc capaitors.
   
  With regard to controlling input current,
  you said   
  " One of the more unique ideas was using 2 or 3 inch 50.8,76.2mm , plastic
  pipe coating the inside with oil for a release agent and stuffing it full of
  Florist wire which is already painted green generally (The pipe should be
  long enough to have a couple of inches to spare).

  The coating and small diameters dramatically reduce Eddie currents, losses,
  and heat. Put some kind of puller in the wire, cap one end of the pipe-
  stuff it with the wire, stand it on the capped end and fill it with epoxy.
  Wrap the pipe with #6 awg or #4 AWG insulated wire and voila'. Some one else
  may be able to give you an idea of the number of turns for 4KVA-5KVA control
  ( I am assuming 240V, are you 50 or 60Hz?)."
   
  That sounds like something I could make. Does anyone know the turns etc I
  could use or is it just "suck it and see?" Yes we use 240v 50 Hz in New
  Zealand, and it is spring here!
   
  My other question was,   "2. Some people use a rotary gap and static gap in
  series. Why?"
   
   
  Cheers
  Andrew Buxton
  Tesla wanabe
   
   

   
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