Re: Volatge rating of caps in VTTC
Sorry. I wasn't thinking too clearly ;-). As Jim Lux pointed out, the 1 kv
rating would be to low. I use the Panasonic PP caps from Digikey in a MMC
configuration without problem. One string in series for my tank cap running
up to 2.5 KW total input power to the VTTC. Are you making your own
filtered DC power supply? What type of tube are you using? One thing to
note is that a filtered DC fed VTTC produces a much smaller discharge than
a "pulsed" tube coil.
At 06:22 PM 8/28/99 , you wrote:
>Original Poster: Grayson B Dietrich <electrofire-at-juno-dot-com>
>Thanks, Dave. One thing that was suggested to me to keep in mind was the
>voltages that the plate cap may ring up too... ...is this really a
>problem in a VTTC? The same source also said that i could replace the
>micas with low-loss PP or PE caps. That would seem to me to be alright,
>as they work for tank caps in conventional coils!
>Reducing the voltage strength and using PE/PP (MMC) would further reduce
>the cost of making a VTTC, so I hope this is all true!
>On Fri, 27 Aug 1999 13:51:23 -0600 Tesla List <tesla-at-pupman-dot-com> writes:
>> Original Poster: David Trimmell <davidt-at-pond-dot-net>
>> Cool, with the credit thing. With only 600 VDC as the high voltage,
>> 1KV rating should be sufficient for the caps.
>> David Trimmell
>> At 09:31 PM 8/25/99 , you wrote:
>> >Original Poster: Grayson B Dietrich <electrofire-at-juno-dot-com>
>> >I have a schematic for a small VTTC that uses 600VDC on the plate,
>> and a
>> >large numer of the caps are 5KV micas, abd I was wondering if one
>> >concievable use a lower volatge rating, say, 1200V? This would help
>> >reduce the impact the thing has on any possible budgets. It may
>> become a
>> >project (for credit! Yeah!) in my high school honors physics class,
>> >the teacher may be interested in purchasing it or paying for the
>> >construction to keep it as a demo tool.
>> >Thanks for any input,
>> >-Grayson Dietrich
>> >"The Electrophile"
>> >Get the Internet just the way you want it.
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>Get the Internet just the way you want it.
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