Editing EMI suppression cores

[[File:Ferrirebeads.jpg|thumb|Snap on ferrite beads]]
[[File:Ferritebead.jpg|thumb|Toroidal ferrite bead]]
EMI suppression cores a.k.a. ferrite beads are an efficient way to reduce high frequency interference from wiring. Adding ferrute beads to signal & power wiring is recommended if signal reliability problems are encountered.
==Selection==
For motor control applications it is recommended to get low to medium frequency ferrite beads for maximum efficiency. 
;Preferred choices
*Core material designed for low to medium frequency bands (attenuation between 1-300 MHz)
*Large enough to fit cable multiple rounds through it
;Avoid
*Core material designed for high frequency bands (above 300 MHz)
*Inductor cores - will just add inductance and make things worse
*Iron powder cores
Most ferrite & iron powder cores look same. So if unsure about material properties, its most safe bet to purchase low to medium frequency beads from distributors such as:
*Digikey
*Mouser
*Farnell
Some popular ferrite bead brands:
* Laird-Signal Integrity Products
* Fair-Rite
==See also==
*[[Wikipedia:Ferrite bead]]
@@ Line 1: / Line 1: @@
-[[File:Ferrirebeads.jpg|thumb|Snap-on ferrite cores]]
+[[File:Ferrirebeads.jpg|thumb|Snap on ferrite beads]]
-[[File:Ferritebead.jpg|thumb|Toroidal ferrite core]]
+[[File:Ferritebead.jpg|thumb|Toroidal ferrite bead]]
-EMI suppression cores or ferrite cores are an efficient way to reduce high frequency interference from wiring. Running cables through a ferrite cores is a recommended solution attempt if signal reliability or connection problems are encountered.
+EMI suppression cores a.k.a. ferrite beads are an efficient way to reduce high frequency interference from wiring. Adding ferrute beads to signal & power wiring is recommended if signal reliability problems are encountered.
 ==Selection==
-For motor control applications it is recommended to get low to medium frequency ferrite cores for maximum efficiency.
+For motor control applications it is recommended to get low to medium frequency ferrite beads for maximum efficiency.
-;Preferred types
+;Preferred choices
 *Core material designed for low to medium frequency bands (attenuation between 1-300 MHz)
 *Large enough to fit cable multiple rounds through it
-;Avoid (might make things worse)
+;Avoid
 *Core material designed for high frequency bands (above 300 MHz)
-*Inductor cores
+*Inductor cores - will just add inductance and make things worse
 *Iron powder cores
-*Most ferrite & iron powder cores look same. If unsure about material properties, its most safe to purchase new low to medium frequency cores.
+Most ferrite & iron powder cores look same. So if unsure about material properties, its most safe bet to purchase low to medium frequency beads from distributors such as:
-As example, take a look at [http://lairdtech.thomasnet.com/category/round-and-cylindrical-cores?&plpver=10 Laird broadband and low frequency cores].
-==Where to find suitable cores==
-Ferrite cores are available from most electronic part distributors such as:
 *Digikey
 *Mouser
 *Farnell
-Some popular ferrite core brands:
+Some popular ferrite bead brands:
 * Laird-Signal Integrity Products
 * Fair-Rite
-==Usage==
-===Application===
-[[File:Ferrite multiple turns.jpg|thumb|Turning cable 2-3 times through core or using multiple in series increases filtering performance.]]
-[[File:Argon test stup closeup m.jpg|thumb|Correct installation of a core in 3 phase motor U,W and V wires and leaving PE wire out.]]
-Application tips:
-*If possible, make 2-3 turns of cable through one core to maximize it's effectiveness
-*Place core close to interference source, not in the middle of the cable
-===With servo drives===
-To solve an EMI problem its good to have selection of cores that can be tried on different cables. Most typical placement for cores:
-*Motor output cable (all motor wires through core but '''not''' earth conductor). However, if earth conductor is hard to separate, then feeding all wires through core is still better than nothing.
-*High voltage power supply cable (+ and - leads through core)
-*USB adapter or other communication cables
-*Control I/O cables
-*Encoder/feedback device cable
-{{Tip| Don't run multiple different type of signals through single core. I.e. don't combine power supply and motor leads in one core. Doing so  can make filtering worse than without cores.}}
 ==See also==
 *[[Wikipedia:Ferrite bead]]
-[[Category:Argon troubleshooting]]
-[[Category:IONI troubleshooting]]
-[[Category:VSD-E/XE troubleshooting]]
-[[Category:Glossary]]