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#7
April 18th 05, 02:46 PM
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Ralph Mowery wrote:
"Chris" wrote in message ... Hi, I'm currently having to build some high-voltage capacitors for an auto-ATU that I'm building. The capacitors are made from interleaving brass shim with some kind of dielectric. It was suggested that the dielectric was made from a triple layer of polyethylene sheet (ie freezer bag) stuck together with DC4 grease to exclude any air. However, this seems a messy approach and some engineer friends suggested that instead I use overhead projector transparency. I found that a double layer of this transparency worked to give me reasonable capacitor values with a reasonable number of plates per capacitor. Look for some Kayton made by Dupont. It is a high voltage plastic like film similar looking to the mylar sheets. It is especially made for applications like you want. sometimes sold as an insulator in sheets for transistors |
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