Jou Jye BITWIN BW-B430JL 430W Review

Name: Jou Jye BITWIN BW-B430JL 430W
Brand: Jou Jye

crmaris

on Mar 27th, 2011,

in Power Supplies.

Manufacturer: Jou Jye

Value & Conclusion »

Ripple Measurements

In the following table you will find the ripple levels that we measured on the main rails of BW-B430JL. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V & 3.3V).

Ripple Measurements
Test	12 V	5 V	3.3 V	Pass/Fail
20% Load	9.2 mV	4.6 mV	5.2 mV	Pass
40% Load	10.4 mV	4.8 mV	5.4 mV	Pass
50% Load	11.6 mV	5.4 mV	5.6 mV	Pass
60% Load	12.2 mV	5.4 mV	6.2 mV	Pass
80% Load	14.2 mV	6.0 mV	6.6 mV	Pass
100% Load	17.8 mV	6.4 mV	7.8 mV	Pass
Crossload 1	18.6 mV	22.8 mV	8.0 mV	Pass
Crossload 2	19.6 mV	6.8 mV	9.6 mV	Pass

Ripple? Where did you see any? In these measurements the small BITWIN was simply amazing. It seems that Seasonic has discovered the secret recipe that eliminates ripple! Even at full load +12V did not pass 20mV and the minor rails stayed below 8mV! Outstanding performance that beats many high-end PSUs. We had to run the Crossload 1 test and push the minor rails really hard to see 5V ripple reach 22.8mV, a reading still below half of the limit (50mV).

Ripple at Full Load

In the following oscilloscope screenshots you can see the AC ripple and noise that the main rails registered (+12V, 5V, 3.3V). The bigger the fluctuations on the oscilloscope's screen the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals to 0.01V) as standard.