There may be the following reasons:1. If there is poor contact between the adapter power cord and the adapter jack, the spark should be replaced, and the small metal column of the adapter jack should be cleaned.2. The magnetic core of the switching transformer in the adapter is loose, but it can not be dealt with. If you can't stand it, open it and fill the switching transformer with resin.The···
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Reliability indicators mainly include reliability, average life, failure rate and failure density.1. Reliability: The reliability of the product is the probability of normal operation, which refers to the probability that the product can complete the specified function under the specified conditions and within the specified time. When calculating the reliability, the larger the number of products ···
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1. Input voltage range: when the input voltage of the switching power supply changes, the input voltage variation range that keeps the output characteristics unchanged. The wider this range, the stronger the ability of the power supply to adapt to changes in the external mains, and the wider the working range of the switching power supply. It is related to the error amplifier inside the switching ···
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