In the linear power supply, the power transistor V always works in the linear amplification region of the transistor characteristic curve in the whole working process. The power consumption of the power transistor itself is directly proportional to the output current. In this way, the power consumption of the power transistor will increase with the increase of the output power of the power supply. In order to ensure the normal operation of the power transistor, in addition to the selection of high-power tubes, it is necessary to add large heat sink to the tubes.<br>
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