Ferrite Beads
Ferrite Beads
(OP)
Hi,
I have just received a "product update" from a supplier advising that we fit the ferrite beads (see link) to the supply of control PCBs.
http://www.kemtron.co.uk/buyferrites.html
We have to fit 3 in total, L,N & Earth by loping the cable a single time through the bead.
My guess is that this is going to look a bit unprofessional so im wondering if there is a neater solution out there?
Are there any encapsulated modules out there that will do the job?
Supply voltage = 110VAC
Supply current = <100mA
Thanks in advance
I have just received a "product update" from a supplier advising that we fit the ferrite beads (see link) to the supply of control PCBs.
http://www.kemtron.co.uk/buyferrites.html
We have to fit 3 in total, L,N & Earth by loping the cable a single time through the bead.
My guess is that this is going to look a bit unprofessional so im wondering if there is a neater solution out there?
Are there any encapsulated modules out there that will do the job?
Supply voltage = 110VAC
Supply current = <100mA
Thanks in advance





RE: Ferrite Beads
Using one core, which is the standard way of doing it, will keep common-mode impedance high. Using separate cores will need more core material so that the normal mode current doesnt saturate the cores. Saturated cores have a much lower impedance and will not work very well in most instances.
Is there some misunderstanding? Or does your supplier want to sell three times more cores to you?
Gunnar Englund
www.gke.org
RE: Ferrite Beads
Dan - Owner
http://www.Hi-TecDesigns.com
RE: Ferrite Beads
Although we have had no problems apparently other distributers have found a problen and these beads sort it out.
We have not yet bought or fitted any ferrites.
Thanks for the advice on how to connect the ferrite. Thats stopped me looking a bit silly!
RE: Ferrite Beads
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Ferrite Beads
It also keeps the ferrite bead from easily sliding down the cord in the cases where it's not a tight fit...
RE: Ferrite Beads
RE: Ferrite Beads
It may have been the only way they got the final assy to comply to FCC, CE or whatever requirements.