Protective functions of power supplies

For the safe operation of switching power supplies, the specifications recommend a number of protections that disable the Dell XPS M1330 AC Adapter in an emergency. The most important protection measures include the current limit. These must be installed in each power branch. The current limit kicks into action when the output current of the Dell PA-12 AC Adapter certain limits are exceeded. This also includes the short circuit that can be compensated in the event of power utilities must.

Another security measure to prevent damage to sensitive computer components, is the surge protector. Similar to the current limit circuitry disables the power sectors in reaching certain thresholds, the Dell PA-10 AC Adapter.

Against overheating the switching power supplies are equipped with temperature-controlled fan, and integrated temperature sensors that turn off when it reaches a predetermined limit temperature, the Dell Inspiron 8500 AC Adapter. Especially for high current drain or failure of the power supply fan, the temperature protection circuit protects against thermal damage to the device.

To keep the Dell Vostro 1500 AC Adapter in the unloaded control inputs from undefined conditions, furnish the manufacturer, the switching Dell Inspiron 8600 AC Adapter with a so-called no-load function. This recognizes the outstanding Put inputs and put the adapter into a shutdown state, is connected to a load.