| 摘要 |
PROBLEM TO BE SOLVED: To remarkably reduce radiation noise without making impedance too at large high frequencies by specifying the distance between a central portion of a transmission transformer and a connector end, and specifying the distance between the central portion of the transmission transformer and a central portion of the other transmission transformer. SOLUTION: A distance (a) between a central portion of a transmission 4 and a pin terminal 6 of a nearest connector should be within 0.1 m and a distance (b) between a pin terminal 6 of a remotest connector or the central portion of the transmission 4 and a central portion of another transmission should be 0.5-4 m. When the wavelength of noise isλ, preferably, the distance between the central portion of the transmission 4 and the nearest connector end should be withinλ/20, and the distance between the central portion of the transmission 4 and the remotest connector end or the distance between the transmission transformer 4 and the central portion of another transmission transformer should beλ/4-2λ.
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