The output voltage range that can work normally under the working conditions of a DC stabilized power supply. The upper limit of this indicator is determined by the * large input voltage and * small input-output voltage difference, while its lower limit is determined by the reference voltage value inside the DC stabilized power supply.

1. The impact of input voltage range: when the input voltage is too high, some components may be damaged due to excessive voltage or power consumption. When the input voltage is too low, some components may experience performance degradation or even malfunction.

2. The impact of voltage instability, for example, the power supply of an oscilloscope must be stable to ensure the accuracy of the deflection sensitivity and scanning time of the light spot; For example, a digital voltmeter requires an extremely safe and stable power supply internally to ensure the accuracy of voltage/digital conversion.

3. The impact of overvoltage on the output terminal, for example, when the output voltage of a DC stabilized power supply exceeds 30% of the rated voltage of the integrated circuit, it may cause significant damage to the integrated circuit.

4. The impact of a brief power outage, for example, local communication cannot be interrupted instantly, otherwise global communication will be interrupted, causing major accidents; For example, when computers and other devices use AC power supply, an AC uninterruptible power supply should be used.