Noise Suppression for R/C Receivers
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If miniature ferrite beads are used for this purpose, the connector must be first be taken apart, after which the lead must be threaded through the bead (perhaps making several turns around the core) and then soldered back onto the connector.
Materials
Gerber file
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Extra info / Update
On the PCB, swap connections 1 and 4 of indictor L9. Disconnect the tracks to both pins, then solder a piece of light-duty wire between pin 1 of the inductor and pin 1 of K17. Next, solder a second piece of wire between inductor pin 4 and pin 2 of K17.
Component list
R1 = 1Ohm
Capacitors:
C1 = 100nF
C2 = 22pF
Miscellaneous:
L1-L8,L10 = ferrite inductor, SMD 1206 (e.g. Digikey # PMC1206-202-ND)
L9 = common-mode coil (e.g., Digikey # CM1011-254-ND)
K1-K8 = servo cable
K9-K17 = 3-way SIL pinheader
PCB, ref. 054018-1
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