The equipment has output voltage but no current, or it has current but no voltage. In either case, we should check if our load is being touched or if it's being short-circuited.
While adjusting the voltage, it was found that the no-load voltage could not be increased. This situation is not due to a problem with the equipment, but rather an operator's mistake. Even when the power supply is in a no-load state, a small amount of current is required to maintain it, so do not completely shut off the current adjustment.
The power supply outputs current and voltage, but it fails to increase the voltage adjustment. This situation may indicate that the operator is not well-versed in constant voltage and constant current. In constant voltage mode, the output current size is not determined by the operator's adjustment but by the load.
