The influence of DC regulated power supply on electronic equipment
Due to the characteristics of electronic technology, the requirement of electronic devices for power circuits is to provide continuous and stable electrical energy that meets the load requirements, and usually requires stable DC electrical energy. The power supply that provides this stable DC power is a DC stabilized power supply. According to the working state of the regulating tube, DC stabilized power supplies can be divided into two categories: linear stabilized power supplies and switch stabilized power supplies.
Output voltage range
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.
Maximum Input Output Voltage Difference
This indicator represents the maximum allowable voltage difference between input and output under normal operating conditions of the DC stabilized power supply, and its value mainly depends on the voltage resistance index of the internal adjustment transistor of the DC stabilized power supply.
Minimum Input Output Voltage Difference
This indicator represents the required small voltage difference between input and output to ensure the normal operation of a 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.
It can be seen from this that the role of DC stabilized power supply in electronic devices is very important, as it can completely eliminate these effects and play a very important maintenance role in the working process of electronic devices.
