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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

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SilverStone ST1500 Handbuch Seite 5