I would answer no.I don't know of anyone who has rectified 200kV plus from a TC. Diodes at 100kHz will need to have a very fast recovery and avalanche capability. They are not readily available. I have about 50kV worth of 9ns ultrafast recovery diodes but they don't avalanche so I would be risking all. The point and plane method has not worked for me. I have used multiple point and concave surfaces and an electrometer to determine DC charge. It only rarely resulted in DC which would leak away rapidly. Of course any spark that connected would short circuit the diode so it is a corona device only. Of course, even if you could rectify a TC giving a 6 foot spark, you would only get DC with a 1-2 foot spark since you don't get the spark growth with DC. Perhaps I should try with my big TC which has a resonant frequency of 39kHz which is getting down to the region where my 1MV string of (non fast recovery) HV avalanche diodes might work.
Peter----- Original Message ----- From: <Sfxneon@xxxxxxx>
To: <tesla@xxxxxxxxxx> Sent: Saturday, August 30, 2008 5:02 AM Subject: Re: [TCML] Rectifying a Tesla coil
In a message dated 8/29/2008 1:52:22 P.M. Central Daylight Time, jhowson4@xxxxxxxxxxx writes:Is it possible to rectifiy a Huge tesla coil? No reason I was just curious.A simple, but not too efficient method to rectify the output of a _large_coil might be the "point and plate electrode" type of rectifier where a pointedmetal rod is aimed at the center of a round metal plate, close enough forionization to take place. Some rectifying action takes place due to the geometryof the electrodes, and a high DC potential can be accumulated. I'll betJeff at Electrotherapy Museum has some examples of this being used for earlyx-ray tubes, huh Jeff? Tony Greer
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