Influence of DC Stabilized Power Supply on Electronic Equipment
Due to the characteristics of electronic technology, the requirement of electronic equipment for power supply circuits is to be able to provide continuous and stable power that meets the load requirements, and usually requires stable DC power. The power supply that provides this stable DC power is the DC regulated power supply. According to the working state of the regulating tube, the DC regulated power supply can be divided into two categories, the linear regulated power supply and the switching regulated power supply.
output voltage range
The output voltage range that can work normally under the condition of DC regulated power supply. The upper limit of this index is stipulated by the maximum input voltage and the minimum input-output voltage difference, and its lower limit is determined by the internal reference voltage value of the DC stabilized voltage power supply.
*Large input-output voltage difference
This indicator represents the maximum allowable input-output voltage difference under the normal working conditions of the DC regulated power supply, and its value mainly depends on the withstand voltage index of the internal adjustment transistor of the DC regulated power supply.
*Small input-output voltage difference
This indicator represents the minimum input-output voltage difference required to ensure the normal operation of the DC power supply.
1. The influence of the input voltage range. When the input voltage is too high, some components will be damaged due to excessive voltage or excessive power consumption. When the input voltage is too low, the performance of some components will be degraded. , doesn't even work.
2. The influence of voltage instability. For example, the power supply of the oscilloscope must be stable to ensure the accuracy of the deflection sensitivity of the light spot and the scanning time; /Number conversion precision.
3. The effect of overvoltage at the output terminal. For example, when the output voltage of the DC stabilized power supply exceeds 30% of the rated voltage of the integrated circuit, it may cause a large amount of damage to the integrated circuit.
4. The impact of short-term power outages. For example, the local telephone communication cannot be cut off instantaneously, otherwise the global communication will be interrupted, causing major accidents; for example, when the computer uses AC power supply, an AC uninterruptible power supply should be used.
It can be seen how important the role of DC regulated power supply in electronic equipment is, and it can completely eliminate these effects, and it plays a very important role in maintenance during the working process of electronic equipment.
