Re: Full Wave Voltage Doubler with MOTs

• To: tesla-at-pupman-dot-com
• Subject: Re: Full Wave Voltage Doubler with MOTs
• From: "Tero Ranta" <tero.ranta-at-bigfoot-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 04 Jan 2000 05:57:13 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

----- Original Message -----
From: "Tesla List" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, January 03, 2000 15:18
Subject: Re: Full Wave Voltage Doubler with MOTs


> I checked your link (tech_corner.htm). My schematics feature 2 doublers.
> Basically for one doubler (which corresponds to the link's circuit) you
need
> just one diode and one cap, if using my schematics.
>
> The Yugoslav circuit uses 2 caps and 6 diodes (!) to achieve the same!

Marco,

it's not the same! There are lots of types of doubler topologies, half-wave,
full-wave, genuine full-wave and then there are things called "level
shifters".

Your doubler circuit is a level shifter.

I have simulated many kinds of doubler topologies and found IMO the best way
(least parts). It produces quite smooth _steady_ 11kVDC, opposed to the
pulsed dc you achieve with your circuit.

Here's the schematic (4 diodes and 4 caps):


o---------------
               |
       -----*----------o +
MOT    |    |  |
       D    C  |
       |    |  |
o------*    *--|
       |    |
       D    C
       |    |
       *----*----------o gnd
       |    |
       D    C
       |    |
o------*    *--|
       |    |  |
       D    C  |
MOT    |    |  |
       -----*----------o -
               |
o---------------


Please let me know if you think there is something wrong with my schematic
or if you know a better way making it.

By the way, how should I protect the diodes from voltage surges from the
primary circuit?


Tero

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