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Re: using ignition coils for marx supply
Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
a) yes they can be put in series
b) they don't have to switch exactly at the same time, just reasonably
close. Sinewaves are particularly good, because the rise time is slow at
the zero crossing, compared to, for example, a square wave or pulse.
c) The reverse recovery time of 1n400x (or 1n540x) is pretty slow, which is
a real problem for high frequencies, because they never really turn off.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, November 29, 2003 4:06 PM
Subject: Re: using ignition coils for marx supply
> Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com>
>
> So these can be put in series? wouldn't they overvolt unless there was a
way
> to ensure they switched at the same time? I was going to buy a few single
> 60kv .5A superfast ones ($200 each for 200khz rectification), but this
would
> save a fortune.
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Saturday, November 29, 2003 3:24 PM
> Subject: RE: using ignition coils for marx supply
>
>
> > Original poster: "Daniel Barrett" <dbarrett1-at-austin.rr-dot-com>
> >
> > Gee, I feel like an advertisement for these things, but the 1N4007,
though
> > cheap, is a little slow for the 200uS-ish pulse from the coil. I
> > experimented with this a year ago and they are inefficient, get hot and
> die
> > fast when used with anything but a 60Hz sine wave due to a very slow
> reverse
> > recovery time. Better to use then UF4007 (A string of 50 for your
> > application). More expensive but will work as expected for higher
> frequency
> > stuff like ignition coil rectifiers and DC Tesla coil "De-Q-ing"
diodes.
> Get
> > these from Mouser or similar. Digikey does not carry them.
> > db
> >
> >
> > -----Original Message-----
> > From: Tesla list [mailto:tesla-at-pupman-dot-com]
> > Sent: Friday, November 28, 2003 9:34 PM
> > To: tesla-at-pupman-dot-com
> > Subject: Re: using ignition coils for marx supply
> >
> >
> > Original poster: "Anthony" <ant17-at-optushome-dot-com.au>
> >
> > i would just use 40 1n4007 in series
> >
> > ----- Original Message -----
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Saturday, 29 November 2003 12:43 PM
> > Subject: Re: using ignition coils for marx supply
> >
> >
> > > Original poster: "Jim Mitchell" <Wrenchead-at-starband-dot-net>
> > >
> > > You would need a big diode, where would you get one? Just use a
> flyback
> > > transformer.
> > >
> > > Regards - Jim Mitchell
> > > ----- Original Message -----
> > > From: "Tesla list" <tesla-at-pupman-dot-com>
> > > To: <tesla-at-pupman-dot-com>
> > > Sent: Friday, November 28, 2003 9:10 AM
> > > Subject: using ignition coils for marx supply
> > >
> > >
> > > > Original poster: "Anthony" <ant17-at-optushome-dot-com.au>
> > > >
> > > > hi guys i was wondering if any of you guys has had much luck a
> using a
> > > > rectified ignition coil as a power supply for a marx did it work
ok
> > thanks
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>