The stated or objective value for a quantity, such as output voltage, which may not be the actual value measured. Output Current Limiting - An output protection feature which limits the output current to a predetermined value in order to prevent damage to the power supply or the load under overload conditions. The supply is automatically restored to normal operation following removal of the overload. Output Voltage - The nominal value of the DC voltage at the output terminals of a power supply. Protection circuitry is electronic with automatic recovery.
Current characteristic is normally foldback type.
Overvoltage Protection - A power supply feature which shuts down the supply, or crowbars or clamps the output, when its voltage exceeds a preset level. The filter usually consists of two parallel capacitors and a series inductance and is generally built into the supply. This power is generally considered to be wasted, but can be corrected for. Power Fail Signal - An electronic signal generated by the power supply which warns of impending power failure. This method is used in applications where power supply failure cannot be tolerated.