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Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the Silencer’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

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Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	6.5mV	4.4mV	14.6mV	3.0mV	Pass
20% Load	9.3mV	5.2mV	6.0mV	3.4mV	Pass
30% Load	12.5mV	6.0mV	7.4mV	4.5mV	Pass
40% Load	13.6mV	6.5mV	8.5mV	4.4mV	Pass
50% Load	14.9mV	8.1mV	10.7mV	5.9mV	Pass
60% Load	14.3mV	9.1mV	12.2mV	6.6mV	Pass
70% Load	15.7mV	9.0mV	14.9mV	6.0mV	Pass
80% Load	18.0mV	9.5mV	15.2mV	7.1mV	Pass
90% Load	19.3mV	11.9mV	18.0mV	8.5mV	Pass
100% Load	21.7mV	15.2mV	19.6mV	12.9mV	Pass
110% Load	22.4mV	15.9mV	20.6mV	13.8mV	Pass
Cross-Load 1	7.1mV	9.8mV	12.5mV	5.3mV	Pass
Cross-Load 2	21.3mV	12.5mV	22.6mV	11.5mV	Pass

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Ripple suppression is good on all of the rails. High Power's new platform delivers clean power, even under extremely tough conditions.

Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.