SilverStone ST1500 Manual - Manual (Page 5)

2-3-3. Ripple voltage test circuit
V out
V return
AC Ground
Power Supply
AC Hot
AC Neutral
Scope
10uF 0.1uF
Load
The ripple voltage of the outputs shall be measured at the pins of the output connector
when terminated in the load impedance specified in figure 1. Ripple and noise are
measured at the connectors with a 0.1uF ceramic capacitor and a 10uF electrolytic
capacitor to simulate system loading. Ripple shall be measured under any condition of
line voltage, output load, line frequency, operation temperature.
Figure 1. Ripple voltage test circuit
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2-5. Efficiency
Power supply efficiency typical > 85% at normal AC main voltage and full load on all
outputs.
2-4. Overshoot
Any overshoot at turn on or turn off shall be less 10% of the norminal voltage value, all
outputs shall be within the regulation limit of section 2.0 before issuing the power good
signal of section 5.0.
2-6. Remote ON/OFF control
When the logic level "PS-ON" is low, the DC outputs are to be enabled.
When the logic level is high or open collector, the DC outputs are to be disabled.
2-3-2. Definition