Re: RE: UL94-5VA & B

Subject:RE: UL94-5VA & B > Author: "Massey; Doug C." > Date: 12/26/00 9:03 AM > > Craig is correct - the UL1950 PAG 4.4.4-002 confirms this and adds, > "IEC > TC74 is developing a proposal to clarity this issue." > > Cheers, > Doug Massey > LXE, Inc. > > -Original Message-

Re: Doubt with conducted emissions measurement

Well, the original comment was that a LISN is a better spec'd source impedance than a feedthrough capacitor and current probe. The feedthrough cap is spec'd as a Bode plot of insertion loss between a 50 Ohm source and load in SAE ARP 936 (I think that's the right number). The impedance added by

RE: Doubt with conducted emissions measurement

Hi Ken, Ok, you caught me exercising a pet peeve (hop up here on the table peeve). My problem stems from specifications which state nominal component values rather than a verifiable Zin. The 61000-4-4 mains coupler is a pretty worst case example. Huge variation in the actual devices from manufa