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Impregnation of Toroids for High-Temperature Service

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1 Author(s)
Deimel, E. ; Gen. Electric Co., Light Military Elect. Equip. Dept., Utica, NY

Two materials have been used successfully for vacuum impregnation of magnetic amplifiers and similar devices for continuous operation at 325°F or higher. Complete impregnation, even through layers of interwinding tape, has been achieved. One material is an undiluted silicone rubber capable of withstanding 500°F continuously. The other is a rigid, filled epoxy resin using a nonvolatile hardner, which will withstand 325°F continuously. With proper design, both materials will withstand high accelerations in vibration between --65°F and their maximum operating tempera- ture.

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Component Parts, IRE Transactions on  (Volume:3 ,  Issue: 3 )