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Click on the photos for bigger picture. |
Primary is a 30deg. "saucer" shape with 15 turns copper tubing 6mm(1/4"). 56'468 bytes |
Acrylic supports give a less-weight look to the primary 31'583 bytes |
Secondary with 25cm silver plated metal-vase as topload terminal. "Jonic motor" on top. (exagger. perspective) 22'700 bytes |
A flat plate cap, made of double plated PCB, has been etched for this small Tesla coil. See PCB cap story 20'165 bytes |
First experimental cap, and static gap made of 2 screwdrivers, whose metal-parts were replaced by tungsten rods. At first, the cap was operated without oil. This was a big mistake, as came to light later: see the PCB cap story 20'433 bytes |
This is an overview, how, in the beginning, the TC was set up. Topload is a 9cm diameter metal-vase 46'041 bytes |
Introducing this RQ-gap gave drama- tic improvement of sparklength: from about 0.4m to 0.6m 17'933 bytes |
22mm hardcopper tubes are used. Gaps between tubes are 0.7...0.8mm. Most often only 4...5 gaps are in use. 29'297 bytes |
A Swiss-manufacturer of caps is Leclanché SA. The paper & oil pulse caps shown performed very well, replacing my Epoxy-PCB-cap, despite other infos from experienced US coilers. Click for cap data. 21'292 bytes |
NST protection filter and -safety gap. After killing a nice 10kV 100mA NST, I felt this filter was a need. 48'743 bytes |
Later setup with RQ-gap and 2 Leclanché 7nF caps &10kV NST 40430 bytes |
Typical circuit of this coil, as used autumn'98...spring'99. TC live: see "sparks" 8'051 bytes |