Hold Up Time
The hold-up time reaches 17 ms, and the power OK signal is accurate, but its hold-up time is lower than 16 ms. Nonetheless, the PSU meets the ATX v3.1 spec’s corresponding requirements.
Inrush Current
The inrush currents are high.
Leakage Current
Leakage current refers to the small amount of current that flows through an insulating material or a semiconductor device when it is ideally supposed to be non-conductive. It is typically seen in electronics, such as transistors, capacitors, and insulators, where the current leaks due to imperfections or unintended pathways, even when the device is “off.”
Leakage current in power circuits is an alternating current flowing through the earthing conductor caused mainly by the EMC filter’s Y capacitors (Cy). The more Y capacitors, the higher the leakage current can be!
The IEC 62368-1, which replaces the IEC 60950 OFF (Office Equipment) and IEC 60065 TRON (Electronics, entertainment), defines the limits for maximum leakage (touch) current.
- Normal Condition: Maximum touch current = 3.5 mA
- Single Fault Condition: Maximum touch current = 10 mA
The leakage current is higher than that of the other high-capacity SFX models, but still way lower than the limit.
Timings
The PSU supports Alternative Low Power Modes.
I would like to know the noise output of the electric circuit in the PSU. My SF1000 outputs a 14953hz noise, it gives me headache. I would like to get something that don’t have this noise.
On 220V
this is not possible because each PSU once connected to a specific system affects it, so frequency analysis on a single PSU alone won’t mean anything regarding coil whine.