Re: [TCML] Rectifying a Tesla coil (was Franklins bells)

[Bert Hickman <bert.hickman@xxxxxxxxxx>]

Many years ago I tried placing an insulated sphere outside of my coil's 
striking range. he sphere was also connected a small HV doorknob 
capacitor with the other end of the cap connected to ground. When 
running the coil, corona rectification(?) was sufficient to charge the 
sphere and capacitor to a substantial (10's of kV) DC voltage. This 
should be easily sufficient to operate Franklin Bells.

Bert

pterren@xxxxxxxxxxxx wrote:
> I don't know anyone who has rectified a Tesla coil to produce pure DC.
> A string of IN4007's would be unlikely to do it as their recovery time
> means they are not much good over 20kHz, let alone 2-400kHz for a small
> coil.
> High speed diodes would work but you would need very many and they might
> not be avalanche rated.
> I tried a string of points/concave electrodes without much success.
> Has anyone else had proper success?
>
> Rectifying a Tesla coil attempt
> http://tesladownunder.com/Failures.htm#RectifyTC
> Franklins bells http://tesladownunder.com/HVsparks.htm#Franklin
>
> Peter
>
>
>
>
>
> -----Original Message----- From: Antonio Carlos M. de Queiroz
> Sent: Thursday, April 12, 2012 7:39 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] franklins bells?
>
> On 10/4/2012 20:15, James Hutton wrote:
> > Hey, will franklin's bells work with a tesla coil? I would test myself
> > but i am lacking a tesla coil at the moment.thanks!
> > franklins bells: http://www.youtube.com/watch?v=SYPRYQ0nU
> You need DC for this, less than 10 kV, and insignificant power. I have
> some videos:
> Using a charged Leyden jar:
> http://www.youtube.com/watch?v=YTK2FWJOreg
> Using an electronic doubler of electricity:
> http://www.youtube.com/watch?v=DikVuKpWNHM
> Using an electrophorus:
> http://www.youtube.com/watch?v=tYypXI9Zhtg
>
> Antonio Carlos M. de Queiroz
>
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla


--
Bert Hickman
Stoneridge Engineering
http://www.capturedlightning.com
***********************************************************************
World's source for "Captured Lightning" Lichtenberg Figure sculptures,
magnetically "shrunken" coins, and scarce/out of print technical books
***********************************************************************
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla