INSTRUCTION MANUAL
ZWS300RC
Series
TDK-Lambda
<Page>
6-6. Output Ripple & Noise
The specified maximum ripple & noise value is measured according to below measurement circuit. When load
lines are longer, ripple will becomes larger. In this case, electrolytic capacitor, film
capacitor, etc. might be necessary to be used across the load terminal.
The output ripple cannot be measured accurately if the probe ground lead of oscilloscope is too long.
6-7. Series Operation
For series operation, either method (A) or (B) is possible.
Never use when one of the unit not operate, which leads damage.
In series operation, the rising waveform may have steps.
（
A
）
（
B
）
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Coaxial Cable
1.5 m 50 Ω
C2
+
Load
A
Power
Supply
+V
-V
150mm
C1
R1
C3
Oscilloscope
Bandwidth
：
100MHz
C1
：
0.1uF
Film Cap.
C2
：
100uF
Electrolytic Cap.
C3
：
4700 pF Ceramic Cap.
R1
：
50 Ω
load
Power
Supply
Power
Supply
+V
-V
+V
-V
+
-
load
load
Power
Supply
Power
Supply
+V
-V
+V
-V
+
-
+
-
