Transformerless Tesla coil - more power

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz <twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>

Hi:

I increased the power of my transformerless Tesla coil, increasing the
input capacitance to 5.14 nF and redesigning the system for twice
higher voltage gain. I can obtain now 12 cm streamers, and sparks
with similar length. I added two pictures to:
http://www.coe.ufrj.br/~acmq/tesla/mres4.html

Next experiment will be a directly coupled magnifier. 
I am really liking these directly coupled systems. It's
much easier to make the isolated inductors than the complicated Tesla
transformers. Everything can be assembled and disassembled easily.
I liked also my MMC construction, mounting the capacitors and resistors
in an acrylic plate inserted in a PVC tube. Something to experiment
is to see what is the influence of the radius of curvature of the
breakout point. I will try balls with different radiuses at the
top of the tuning antenna.

Antonio Carlos M. de Queiroz