[TCML] Extremely cheap (surplus?) doorknob capacitor source?
jimlux at earthlink.net
Sat Apr 17 07:44:39 MDT 2010
Christopher Karr wrote:
> Hello everyone,
> I am currently looking for a cheap source of doorknob capacitors
> rated at from 10KVRMS to 20KVRMS (15- to 30-thousand volts
> peak-rated) at the highest value possible, though at the lowest price
> possible. The intended use is, primarily, a VTTC, though a CW
> multiplier is also being designed for the purpose of building a
> home-brew, linear particle accelerator (LinAc).
Interesting projects, but they really need different types of capacitors.
ceramic capacitors suitable for a VTTC, for instance, have to carry
significant RF current, while the voltage multiplier ones don't.
Your LINAC.. is it RF driven (in the classic Alvarez drift tube style)
or are you just doing a potential drop like Cockroft Walton. What sort
of energy (and particles) are you wanting from your LINAC?
> I am sixteen years old, low on funds, and looking for values on the
> order of a nano-Farad or two per capacitor. My price-ceiling is quite
> low, sadly: $100 in total; payable by PayPal or cash-transfer.
If you're buying "used" caps, you need to know their history, unless
they are really dirt cheap and you can afford to throw them away.
> To be honest, I know that there are few sources of doorknob
> capacitors in somewhat-large volume for this price, though I am
> optimistic and shall remain that way.
What is "somewhat large"... are you looking for $10/each or $1/each?
is representative of "surplus" outlets
is another source
> Thank you for all of your help, past and present,
> - Christopher Karr
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