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my name is Eugene and I represent geophysical organization from Russia. We need a planar transformer based on multilayer printed circuit Board. Parameters: the length and width of ferrite is not more than 20 mm in height no more than 12 mm. Operating frequency 30 kHz to 300 kHz. The maximum power is 12 watts. The Input Of 12-18 Volts. The output is approximately 500 Volts. Printed circuit Board - about 27 layers, more or less. Now we use the transformer EFD15 on the frame with the primary winding 14 turns. Secondary 240 turns. Ferrit N87 or N97. We believe that the planar transformer will work much better. We are still the sample is not a large number - about 5 pieces. Mark ferrite has to operate at temperatures up to +150°C. Do you have any suggestions? The cost of manufacture and date of manufacture of a test batch? Please send me an With respect Eugene, Tver Russia
