Join Date: Aug 2016
Location: Saigon - Vietnam
humming noise from the LDD-350h when fed by lower voltage source
I planned to supply the meanwell LDD-350H with a 19V pC power adapter. The LDD is to feed a chain of leds having around 51V in forward voltage. Some members have noticed a hum noise when input voltage is lower than the output voltage. Is it systematic ? Is there a simple way to overcome it other than having higher voltage power supply ?