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Hello Everyone,
I was wondering, why don't we make coils with copper or aluminium foils.
Making coils with foils can make the coil more compact and efficient without any gaps, and with much less resistive impedance. I don't know if I can find coated foils somewhere, or I need to insulate the layers by using tape.
Consider making a coil by using a coil with a copper foil of thickness of about 0.1mm and width of about 50mm and about 300 turns, about 50 meters, which will result on approximately 0.15 ohms of resistive impedance, which will highly increase the efficiency of it, especially for charging Bedini Circuits.
Normal Aluminium Foils have a thickness of about 0.01mm and are too thin, but even with them one can build a coil of about 1000 turns and 10cm height, and a core of about 10mm and whole diameter of 30mm which is very small and light, but with high inductance and the resistance would be only 2.6 ohms.
This is one source I have found that makes these types of coils: Jantzen Audio Cross Coil copper foil
Any suggestions, or comments?
Elias
I was wondering, why don't we make coils with copper or aluminium foils.
Making coils with foils can make the coil more compact and efficient without any gaps, and with much less resistive impedance. I don't know if I can find coated foils somewhere, or I need to insulate the layers by using tape.
Consider making a coil by using a coil with a copper foil of thickness of about 0.1mm and width of about 50mm and about 300 turns, about 50 meters, which will result on approximately 0.15 ohms of resistive impedance, which will highly increase the efficiency of it, especially for charging Bedini Circuits.
Normal Aluminium Foils have a thickness of about 0.01mm and are too thin, but even with them one can build a coil of about 1000 turns and 10cm height, and a core of about 10mm and whole diameter of 30mm which is very small and light, but with high inductance and the resistance would be only 2.6 ohms.
This is one source I have found that makes these types of coils: Jantzen Audio Cross Coil copper foil
Where the highest standard of performance is required it pays not to skimp on inductors. To do otherwise will result in distortion and power loss. High-end loudspeaker producers overcome this problem by using foil coils, where the copper is flat instead of round. If you take a 1.6 mm˛ copperwire and roll it flat, the copper surface area becomes 12 times larger. And why is this an advantage? We know that with rising frequency, the electrons will reach for the surface. This phenomenon is known as power distortion. And this is why we need as large a surface as we can get, so the electrons do not "get squeezed" along the way. Jantzen Cross Coil gives your loudspeaker ballast in pure copper weight an extremely unexpected low resistance i.e.16 AWG 2.70 mH (0.55 kg Cu) RDC 0.600 Ohm. Coppertape width of 19 mm gives 1.33 mm˛ (16 AWG). Until recently, the only disadvantage with foil inductors was the price. But with Jantzen Audio´s new production methods and specially constructed machinery, the price has been greatly reduced. Every single Jantzen Cross Coil goes through specially developed Jantzen Anti-Oxidant Treatment and Measurement, which guarantees lifelong top performance. A hardwood core makes it possible to wind the coils extra close. This results in a very low magneto-striction factor and virtually zero FM distortion, which makes it very close in all respects to an "ideal inductor". The tolerance is +/-3.0% where the normal industry standard is set at +/-5%. Copper purity is 99.99%. With Jantzen Cross Coil, you have an eminent opportunity to upgrade your existing loudspeaker system, and set them soaring to new performance heights!
Elias
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