12V switching power supply measurement 13.7V normal?
Not normal, the reason may be that the voltage feedback is not adjusted.
Can be adjusted by feedback. But 12V switching power supply, then generally use TL431 to feedback, you look at the 2.5v partial pressure of the two resistors, change the resistance can be adjusted. General output requirements in a certain range, such as 12V + _20% to see your request can not accept
Adjust it to 12V, the terminal next to the adjustment potentiometer
