Power Filter for Automotive Electronics

A power line noise filter to isolate mobile electronics such as two-way radios from noise generated by the alternator or other sources.

Design Details

Schematic

PCB

Bill of Materials

Designator	Description	Manufacturer	Part Number
C1	Capacitor, 4700μF 25V	Nichicon	UVR1E472MHD
F1-2	Fuse holder, ATO vertical	Littelfuse	178.6164.0002
J1-2	Barrier strip, 2-position .375"	TE Connectivity	3-1437664-0
L1	Common-mode choke, .47mH 14A	Pulse	P0502NL

Mating Connectors

Barrier strips J1 and J2 mate with spade lugs, maximum width .318"

-- StephenCavilia 11 May 2013