Mistel Vision MX650 Fanless 650 W Review

Name: Mistel Vision MX650 Fanless 650 W
Brand: Mistel Keyboard

crmaris

on Oct 24th, 2018,

in Power Supplies.

Manufacturer: Mistel Keyboard

Protection Features Evaluation & DC Power Sequencing »

Ripple Measurements

You will see the ripple levels we measured on the rails of the MX650X in the following table. The limits are, according to the ATX specification, 120 mV (+12 V) and 50 mV (5 V, 3.3 V, and 5VSB).

Ripple Measurements — Mistel MX650FL
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	10.9 mV	6.1 mV	9.9 mV	8.5 mV	Pass
20% Load	14.3 mV	6.0 mV	10.7 mV	8.8 mV	Pass
30% Load	16.0 mV	6.8 mV	11.5 mV	9.1 mV	Pass
40% Load	17.9 mV	6.7 mV	12.3 mV	9.6 mV	Pass
50% Load	16.7 mV	7.8 mV	13.3 mV	10.3 mV	Pass
60% Load	13.3 mV	8.3 mV	14.3 mV	10.9 mV	Pass
70% Load	13.7 mV	9.0 mV	15.5 mV	11.2 mV	Pass
80% Load	14.7 mV	8.8 mV	19.1 mV	12.0 mV	Pass
90% Load	14.3 mV	8.9 mV	19.1 mV	12.2 mV	Pass
100% Load	25.2 mV	10.0 mV	21.0 mV	13.4 mV	Pass
110% Load	25.7 mV	10.5 mV	21.8 mV	13.6 mV	Pass
Crossload 1	16.4 mV	7.0 mV	19.5 mV	10.1 mV	Pass
Crossload 2	25.7 mV	9.3 mV	14.0 mV	12.1 mV	Pass

Ripple suppression is very good, and no in-cable caps are used.

Ripple at Full Load

You can see the AC ripple and noise the main rails registered (+12 V, 5 V, 3.3 V, and 5VSB) in the following oscilloscope screenshots. 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 0.01 V) as the standard for all measurements.