SciTubeHD | Low Frequency QCW-1 @BrianDhvTinkerer | Uploaded March 2023 | Updated October 2024, 5 hours ago.
This set up uses a QCW or quasi resonant double resonant Tesla coil.  The  resonant frequency of the secondary is 210 kHz. This is being excited by a primary tank circuit which runs resonant at 260 kHz. Ramped input voltage to this tank circuit generates the beautiful arcs that you see.  The duration of the ramp which increases from 30 -400 V is approximately 15 ms. As this secondary coil is resonating at 210 kHz, there is a lot of branching and gnarled appearance of the arcs. Effect is beautiful. Frequencies greater than 300 kHz give my straighter sword-like arcs.
This set up uses a QCW or quasi resonant double resonant Tesla coil.  The  resonant frequency of the secondary is 210 kHz. This is being excited by a primary tank circuit which runs resonant at 260 kHz. Ramped input voltage to this tank circuit generates the beautiful arcs that you see.  The duration of the ramp which increases from 30 -400 V is approximately 15 ms. As this secondary coil is resonating at 210 kHz, there is a lot of branching and gnarled appearance of the arcs. Effect is beautiful. Frequencies greater than 300 kHz give my straighter sword-like arcs.
