EMI I
NPUT
F
ILTERS
>150 H
Positive
Input
1000 pF
x2
x3
0.1 F
0.01 F
2.4 H
FM-461 EMI FILTER
1.75 TO 5 AMP
x2
0.001 F
Positive
Output
50
Input
Common
150
47 pF
x2
4.7 F
Output
Common
FMA-461
1000 pF
500 V
F
IGURE
2: S
CHEMATIC
P6KE47
Positive
Input
0.65
3.5 H
3.5 H
Positive
Output
50
4.7 F
9.4 F
18.8 F
Input
Common
47 pF
500V
Output
Common
FMB-461
3300 pF
500 V
F
IGURE
3: S
CHEMATIC
EMI FILTER
+Vin
+Vout
Case
Output
Input
Common Common
DC/DC CONVERTER
+Vin
+Vout
RL
Case
Output
Input
Common Common
Chassis
ground
Multiple units
allowed up to
rated output
current of filter
RL
The case ground connection should be as low an impedance as possible to minimize EMI. Direct contact of
baseplate to chassis ground provides the lowest impedance.
F
IGURE
4: C
ONNECTION
D
IAGRAM
B5-5
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
