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Old 03-13-2015, 08:18 PM
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med.3012 med.3012 is offline
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Join Date: Nov 2012
Location: Algeria
Posts: 1,076
Discussion the problem:

the following photo show the experiment i did, to increase the sensibility of neon light bulb it's better to use the earth grounding instead of using our hands,
to the right the neon has a medium shining , in the center tap position the neon has a little shining ,this mean the positions of node ( 0V) and anti-node ( V ) are still not positioned correctly, the interference between the main resonance frequency and harmonic frequencies absorb most of pick resonance power, the presence of relative standing waves positions is possible only when decreasing the gap distance of spark-gap, changing the parallel capacitor from 70NF into 10NF help too because of speeding the spark speed ( this help in how much speed the neon bulb is brightening ).

the important phenomena is the relation between neon bulb brightening and decreasing the spark gap distance, the position of these relative standing waves ( they are relative because we have to have a pure node position where the voltage is zero in the center tap, if this condition is achieved charging the capacitor banks will be easy because we have a reference voltage now = 0V )

The E-TBC need a regulation, this device need a silent spark gap... we have to provide a minimum spark-gap resistance , so the combination C + E-TBC must have the maximum impedance toward HV module oscillation frequency, ( practically the best possible.... the E-TBC is able to change its internal geometry when oscillate from parallel LC into serial LC providing a maximum current....).

the next photo show the current situation and the desired situation which can be obtained with adequate HV module capable of oscillating around 150 KHZ.

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