Several common phenomena in high-power DC power supplies
DC power supplies may be categorized into four types: linear power supply, variable frequency power supply, multi-channel DC voltage and stable current power supply, big, medium, and small power adjustable DC voltage and current stabilized power supply, and (0-1000V 0-1000A, power 300W-500KW) is one of them.
Check whether the power supply load is in good contact, whether it is short- or open-circuited, whether it satisfies the standards, etc. in the two scenarios where there is voltage but no current or current but no voltage;
2. The no-load voltage cannot be changed when adjusting the voltage. The power supply uses some current even when there is no load, thus even a tiny amount of current won't be discharged if you set the "current adjustment" to zero. Naturally, when the no-load voltage is zeroed out, the "current adjustment" shouldn't be set to zero.
3. Both voltage and current outputs are available from the DC power supply. The voltage cannot be changed if it is changed once more. The operator's unclear understanding of the terms "constant voltage" and "constant current" may be the primary cause of this. Let's consider a basic example. The power supply is operating in a constant current mode if the "constant current" light is on. At this point, the load determines the output voltage rather than it being "adjusted". The output voltage and current can only be changed in tandem by moving the "current adjustment" knob;
Technical indicators of high-power DC power supplies fall into two categories: the first is called characteristic indicators, and it represents the intrinsic features of the DC regulated power supply, like input and output voltage, current, and adjustment range; the other category is called quality indicators, and it represents the benefits and drawbacks of the DC regulated power supply, like ripple voltage, temperature coefficient, stability, and equivalent internal resistance (output resistance).
