■
There is the possibility that the significant radiation noise is generated, please connect input
smoothing capacitor Cbc to the ± BC terminal as close as possible.
■
If 2 layer or more substrate is used, the radiation noise can be reduced by crossing the output
pattern (+Vo, -Vo) as shown in Fig.6.3.
Fig.6.3
Output wire
reference
■
Long output wiring may generate significant radiation noise, please wire it as short as possible.
■
If it is difficult to be short the output wiring, 470~2200pF capacitor C14 should be connected
between primary (+BC or -BC) and secondary (+Vout or -Vout) to reduce radiation noise.
10~100MHz radiation noise can be reduced by connecting C14.
■
The capacitor C14 which is connected between primary and secondary must be Y1 class
certified (reinforced insulation).
■
Figure 6.4. shows the connection between primary and secondary capacitor C14.
Fig.6.4
Circuit of connect
capacitor
between primary
and secondary
A-15
Load
C14
-Vout
+Vout
Patterns of the surface of power supply mounting surface
Patterns of the opposite surface of power supply mounting
Applications Manual
TUHS series
