Step 6: Results
I'll repeat the safety warnings here.
Excecise caution and good sense when working with high voltage. Remove power from the system before making adjustements.
Don't touch the arcs. Be mindful that the potentials generated can jump a significant gap, and that insulation on tools like regular pliers may be inadequate to prevent you from getting a shock.
Keep in mind that some parts of the system can get hot. The arcs can be hot enough to to ignite paper and plastic, so operate it in a safe location.
High voltage discharges generate Ozone gas, which can cause irritation if breathed in. High voltage discharges also generate some ultraviolet radiation, so limit your exposure and don't stare directly at the arcs.
The first picture is a short time exposure showing the arcs from the high voltage output when used with a power supply of 14 volts. Note that they arcs are distinct blue streams, as opposed to hotter arcs.
The arcs become much hotter when a greater power supply voltage is used along with a higher driver frequency. The subsequent pictures show operation using higher power supply voltages. Notice that the arc is now a hot and yellow.
The video shows how the output arcs are affected by changes to the repetition frequency, switch on time, and power supply voltage.