8KV tank supply from microwave oven components (fwd)

To: tesla-at-pupman-dot-com
Subject: 8KV tank supply from microwave oven components (fwd)
From: Tesla List <mod1-at-pupman-dot-com>
Date: Tue, 19 May 1998 12:46:13 -0600 (MDT)
Approved: mod1-at-pupman-dot-com

---------- Forwarded message ----------
Date: Tue, 19 May 1998 08:42:57 +0300
From: Marco Denicolai <marco-at-vistacom.fi>
To: tesla-at-pupman-dot-com
Subject: 8KV tank supply from microwave oven components

Because attached files are not forwarded, here is an ASCII drawing of my
tentative power supply. It is made of 2 sets of transformer + diode +
capacitor from two microwave ovens. The transformers give about 2KV, which is
doubled with capacitor + diode to 4KV. Put two of these is series and you
get 8KV. See the picture below:

                         | |    
       --------|| ||-----| |----*---------- -
             * || || *   | |    |
               || ||          -----
   220V        || ||          \   /
               || ||           \ /
               || ||          -----
               || ||            |
       --------|| ||------------*--- GND
                                |
                                |
       --------|| ||------------*
             * || || *          |
               || ||          -----
               || ||          \   /
    220V       || ||           \ /
               || ||          -----
               || ||     | |    |
       --------|| ||-----| |----*----------- +
                         | |    

If you are carefull with transformer phasing, you get 8KV pulses at 
25 Hz (Europe = 50Hz 220V!). Connect the phases wrong and you'll get
4KV pulses at 50 Hz. Between + and - terminals I can get a 0.37" continuous
spark between a simple 2-screw gap.

Any problem to feed a TC with this (forget about filtering for now)?

________________________________________________________________________

 Marco Denicolai                   Vista Communication Instruments, Inc.
 Hardware Development Manager      www.vistacom.fi   

 marco-at-vistacom.fi                 Kaisaniemenkatu 13 A
 fax:    +358-9-622-5610           SF-00100 HELSINKI
 phone:  +358-9-622-623-15         Finland

   Remember, Murphy was an optimist! I am not...
________________________________________________________________________