(1) Output voltage range. DC regulated power supply operating conditions in line with the output voltage range that can work normally. The upper limit of this indicator is specified by the maximum input voltage and minimum input - output voltage difference, while its lower limit is determined by the DC regulated power supply internal reference voltage value.

(2) Maximum input-output voltage difference. This indicator characterises the maximum input - output voltage difference allowed under normal operating conditions of the DC regulated power supply, the value of which depends mainly on the DC regulated power supply internal adjustment transistor voltage withstand index.

(3) Minimum input - output voltage difference. This index characterises the minimum input-output voltage difference required to ensure the normal working conditions of the DC regulated power supply.

(4) Output load current range. Output load current range is also known as the output current range, in this current range, DC regulated power supply should be able to ensure compliance with the indicators given in the specification.\