The equipment has output voltage but no current, or it has current but no voltage. In either case, we should check if our load has a touch contact issue or if it's been short-circuited.During voltage adjustment, it was discovered that the unloaded voltage could not be increased. This situation is not due to equipment issues but rather an operator's mistake. Even when the power source is in an unloaded state, it still requires a small amount of current to maintain operation, so do not fully close the current adjustment.
The power supply provides current and voltage output, but fails to adjust voltage. This situation may be due to the operator's lack of understanding of constant voltage and constant current. In a constant voltage state, the output current is not determined by the operator's adjustment but by the load.
