Aromaz 027 - Back to basics HV Everywhere Part 1

[crippled82]

The HV pulls electrons from the gases so they get positive ionized, these electrons collide with other gas particles, which creates the light. The groundwire just provide more electrons to collide with

Just a guess :-)

cool video's, finally some decent amateur research into the 'matter'.

[Aromaz2012]

Thnak you for the compliment. Still working to try and understand the 'pulling' reason and effect.

[dodoshlodo]

great video, well explained, I will go and build this right now!

[Aromaz2012]

Hi Drevtube - Yes, I would expect the same. Unfortunately things are not that easy ? The HV did not disappear. The ground rather seems to increase the HV/Sparks. Th eonly place where ground does reduce HV a little is when it is direct and dead short on base of 2222 - but then the frequency also drops around 50%.

Right now I am going point for point and play with all options to see what/when/where/why... The why is not too easy when things does the opposite of one expect.

[Drevtoobe]

Perhaps the high voltage wire needs to be elevated off of the the table top to keep the capacitive coupling effects to a minimum. For example if the fluorescent tube was vertical with the HV connection on the top. Just a guess.

[Drevtoobe]

Hi Aromaz, This looks like a variation on a theme that you have seen before. The high AC voltage output of the coil is connected to ground through the fluorescent tube.  Therefore the whole setup gets electrified to a high AC voltage potential. I would expect that if you connected the opposite side of the tube to the ground return terminal of the ignition coil the high voltage effects would all disappear.

[Drevtoobe]

When I say "ground" above, I am referring to the table top.

Even though the fluorescent tube is not directly connected to ground (the table top), there is capacitive coupling between the body of the tube and the table top. That makes a valid AC connection, and therefore the entire setup becomes electrified with high AC voltage potential. Note however that the AC connection is most likely 'fluffy' or at relatively high impedance.