EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: sheitbrink on November 24, 2015, 04:18:07 pm
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Hi
I've seen a few post on making your own LISN network and measuring the conducted emissions. I was wondering if any one has thought of doing an amplifier so this could be interfaced with a standard o-scope. I'm mainly concerned about emissions from buck regulators that operate from 500k to 2Mhz. Most of the energy is going to be bellow 30Mhz, so an o-scope would be fine, but the only problem is sensitivity. Most o-scopes only seem to go down to 500uV, which is right about the level of some of the highest conducted limits.
Plus it would be nice if some mishap happened, a relatively inexpensive amplifier bit the dust instead of a several thousand dollar o-scope or spectrum analyzer.