Harting Sbírka katalogů říjen 2013

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This voltage current can superimposed transmission signals. However the energy level usually low. • Radiation coupling: Electromagnetic waves emanate from the cable (antenna principle) a result high transmission frequencies and “long” cable runs. The transfer impedance component screening parameter.Hoods and Housings 57 • Capacitive coupling: There permanent certain capacity between the cable conductors and the connector housing, because these are adjacent circuits with variable potential difference.4 EMC Properties The screening effect housing can described terms the shielding effectiveness factor and the coupling resistance Rc. Shielding effectiveness The shielding effectiveness component defined the ratio a power radiated within the component the maximum resulting interference power outside the component the environment.6. 3. Transfer impedance The transfer impedance the ratio the induced interference voltage between outer conductor and housings the interference current applied to the screen. Odd objects can act unintentional receiver, causing interference voltage or current. This potential difference may cause electrical current to flow (through the air which insulates them), resulting disturbance capacity. specified logarithmic ratio and such referred the shielding effectiveness ratio. Vice versa, this definition also applies the interference power within the component due external interference sources. This specified [dB] (VG 95214 standard). (VG 95214 standard)