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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 TPG-850AH3FSGR’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	23.0mV	8.1mV	7.3mV	5.0mV	Pass
20% Load	8.4mV	8.9mV	8.4mV	4.3mV	Pass
30% Load	10.4mV	9.1mV	9.1mV	4.3mV	Pass
40% Load	10.7mV	9.9mV	10.2mV	5.0mV	Pass
50% Load	12.5mV	14.6mV	12.7mV	9.2mV	Pass
60% Load	13.9mV	14.1mV	12.7mV	6.6mV	Pass
70% Load	15.5mV	15.5mV	13.8mV	7.2mV	Pass
80% Load	17.1mV	17.2mV	17.1mV	8.8mV	Pass
90% Load	18.9mV	18.4mV	18.3mV	8.9mV	Pass
100% Load	21.2mV	20.3mV	19.8mV	10.5mV	Pass
110% Load	24.5mV	22.3mV	21.2mV	12.0mV	Pass
Cross-Load 1	23.8mV	12.9mV	15.5mV	4.9mV	Pass
Cross-Load 2	21.0mV	16.3mV	13.0mV	9.0mV	Pass

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The ripple suppression we measured is satisfactory. It might not be a good as what we've seen from Super Flower, Seasonic, or CWT, but it's still quite good (and without any extra in-cable filtering capacitors).

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.