The Top load
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This is the top load, it is formed in the shape of a torous or toroid. Although other shapes can be used the toroid has many advantages. The top load adds capacitance to the resonant system and lowers its operating frequency. The bigger the top load the bigger the spark BUT input power must be increased to allow break out to occur. The toroid also acts as a corona shield for the top of the secondary coil. Our toroids are made from ally heating duct which is then covered with ally tape to give a smooth finish. |
| Anything can be used as a top load as long as it protects the upper turns of the secondary coil and adds capacitance to the overall tank circuit. This toroid is in fact a lamp shade from a local DIY store, even though it is made of wire mesh in electrical terms the coil sees it as a solid. |
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The spun aluminum toroid |
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This is the new spun aluminum toroid, it offers a smooth surface and looks so good. It was brought from Finn hammer in Denmark. The toroid measures 8" by 24" |
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