RE: MOT w/doubler question

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

Original poster: "David Dean by way of Terry Fritz <twftesla-at-uswest-dot-net>" <deano-at-corridor-dot-net>

Hi Pete,

It looks as though you have the hang of it. For more information on the
subject, go to www.corridor-dot-net/deano . There you will find a file called
diode.zip that has the basic theory on DC power supplies. This level shifter
circuit works quite well with a SRSG running at 60 BPS. With a static gap
you will probably need more current limiting than provided by a T.F. style
filter circuit. The current will still tend to be rather high making the gap
hard to quench.

later
deano

> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Monday, January 22, 2001 6:11 PM
> To: tesla-at-pupman-dot-com
> Subject: MOT w/doubler question
>
>
> Original poster: "Peter Lawrence by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <Peter.Lawrence-at-Eng.Sun-dot-com>
>
> I'm trying to make sure I understand how a voltage doubler (like in a
> microwave oven circuit) works
>
>
>          +------------+-------------------- HV out
>          |            |
>         ---           |
>         CAP           |
>         ---           |
>          |            |
>          |            -
>          |            D
>        x S w          I
>        f e i          O
>        r c n          D
>        m d d          E
>        r r i          -
>          y n          |
>          | g          |
>          |            |
>          +------------+--------------------
>                       |
>                       |
>                      GND
>
>
> If I am understanding this correctly, the top of the xfrmer
> secondary winding
> does +1900v to -1900v and back at 60 Hz; 120 peaks counting both
> + and - (???).
>
> The "HV out" does 0 while the diode is conducting, and (2 * 1900), ie the
> sum of the secondary V plus the CAP V, while the diode is non-conducting,
> at 60 Hz;   60 peaks, pulsing DC ie only one polarity (???).
>
>
> Therefore: TC using MOT w/ voltage doubler will do 60 BPS. (?)
> (or maybe more if the Tank cap can be charged multiple times in one (half)
> cycle).
>
> The way I see it (someone correct me if I'm wrong) putting two
> MOTs w/doublers
> in series with common ground you get (4*1900v) at 60 BPS and it
> is pulsating
> DC, at least if you connect everything up correctly (swap one of
> the diodes
> from the way it was in the M-O, and connect the primaries in
> anti-parallel)...
>
>
>          +------------+-------------------- HV out
>          |            |
>         ---           |
>         CAP           |
>         ---           |
>          |            -
>          |            V diode
>          S            -
>          E            |
>          C            |
>          |            |
>          +------------+-------------------- GND
>          |            |
>          C            |
>          E            |
>          S            -
>          |            V diode
>          |            -
>         ---           |
>         CAP           |
>         ---           |
>          |            |
>          +------------+-------------------- HV out
>
>
> thanks,
> Pete Lawrence.
>
>
>