Hold-up time (bridging time)
Hold-up time is a bridging time that describes the period during which the specified output power continues to be provided in the event of an input voltage failure. Even normal power supply units can bridge short-term power failures of up to a few seconds using appropriately dimensioned input storage electrolytic capacitors. The bridging time is less than 17 ms, but the power supply still complies with the ATX v3.1 specifications, as these are looser in this area than the ATX v3.0 specifications.
Timings
The power supply supports alternative low-power modes. For maximum motherboard compatibility, T1 should be less than 100 ms.
Inrush current (starting current or inrush current)
All power supply units generate a so-called inrush current, which often far exceeds their nominal current consumption. The causes are the charging of the different capacitances in the input circuit and in the EMC filters, the build-up of the magnetic field in the transformer core and even the charging of the capacitors in the output filter. Only when the converter is operating stably does this input current drop back to normal values. The inrush currents are pleasantly low.
- 1 - Intro, overview und technical data
- 2 - Unboxing, cables and protection features
- 3 - Teardown: Topology, components and craftmanship
- 4 - Load Regulation, ripple suppression
- 5 - Transient response
- 6 - Hold-Up time, timings, inrush current
- 7 - Efficiency, PF and vampire power
- 8 - Noise and fan curves
- 9 - Summary and conclusion
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