DC regulated power supply is an electronic device that can provide stable DC power supply for loads. The power supply of DC regulated power supply is mostly AC power supply. When the voltage or load resistance of AC power supply changes, the DC output voltage of the regulator will remain stable. With the development of electronic devices towards high-precision, high stability, and high reliability, DC regulated power supplies have put forward high requirements for the power supply of electronic devices.

(1) Output voltage range. The range of output voltage that can operate normally under the working conditions of a DC regulated power supply. The upper limit of this indicator is determined by the maximum input voltage and the minimum input-output voltage difference, while the lower limit is determined by the reference voltage value inside the DC stabilized power supply.

(2) Maximum input output voltage difference. This indicator represents the allowable voltage difference between a large input and output under normal operating conditions of a DC stabilized power supply. Its value mainly depends on the voltage withstand index of the internal adjustment transistor of the DC stabilized power supply.

(3) Minimum input output voltage difference. This indicator represents the minimum voltage difference between input and output required to ensure the normal operation of a DC regulated power supply.

(4) Output load current range. The range of output load current, also known as the output current range, within this current range, the DC stabilized power supply should be able to ensure compliance with the indicators given in the specifications