Hi all,
EMC problems are happened in battery charger so, I trying to remove them using bead, C and EMI core.
You can see it in this
Fig. 1: Normal Fig. 2: Copper shield, Bead and C in input terminal Fig. 3: EMI core around cable, copper shield, Bead and C in input terminal
Howerever, I want to get more margin than fig. 3 in emc_problem.pdf. What should I do to do it.
DC/DC converter input is as follow. Input: 12V2.0A
Thanks,
From Bob.
Hmmm..........
More C perhaps ? Perhaps some real L too rather than a ferrite lump 'band aid' ?
Graham
I would be looking at the circuit design, itself, and trying to find the actual sources of EMI. Then I would try to reduce its generation at those sources, or contain it, there, before trying to contain it further from the source with the methods you are trying.
This sounds like a band aid situation to me to get the device through approvals. Can't figure what the copper shield is for though.
Graham
Capacitance is 10uF.
Try adding a 0.047 uF and a 0.0022 uF in parallel.
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