In either case, the power supply has been working normally, and the operator should check whether the load is in good contact, whether the load is short-circuited or open, whether the load meets the specifications, and so on. In extreme cases, if the power supply has a voltage output (constant voltage state), and the load line is disconnected, the natural output current is equal to zero. Similarly, if the power supply has current output (constant current state), and the load is short-circuited, the natural output voltage is equal to zero.
Professional Manufacture of DC power supply
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