Constant voltage accuracy

This represents the stability of output voltage when changing input voltage, output current, etc. in power equipment, and is expressed as the variation in output voltage or the percentage variation relative to the rated output voltage. There are several types of constant voltage accuracy, and it mainly indicates the variation in output voltage when the following conditions are changed within specified ranges.

Static input variation	Variation when input voltage is changed gradually
Dynamic input variation	Variation when input voltage is changed abruptly
Static load variation	Variation when load current is changed gradually
Dynamic load variation	Variation when load current is changed abruptly
Ambient temperature variation	Variation when the ambient temperature of the equipment is changed
Initial drift	Variation during the time from power-on until operating temperature is reached (typically after 30 minutes)
Long-term drift	Variation during the time from reaching operating temperature after power-on (typically after 30 minutes) until a specified time later (after 8 hours)

For example, it is desirable to select models with excellent constant voltage accuracy under operating conditions, such as choosing models with good accuracy for ambient temperature variation when used in locations with large temperature fluctuations.