StudentSA
Member
Good Day,
I am worried that the SMPS I bought might be faulty. I got a MeanWell 75W SMPS and when I connect only AC to the SMPS it has a high frequency hum sound.
However if I start drawing some power (5W) from it then the hum goes away. Is this normal?
I'm concerned because my application varies from 0 - 30W, depending on configuration and I certainly don't want a hum at low power consumption times.
Kind Regards,
StudentSA
I am worried that the SMPS I bought might be faulty. I got a MeanWell 75W SMPS and when I connect only AC to the SMPS it has a high frequency hum sound.
However if I start drawing some power (5W) from it then the hum goes away. Is this normal?
I'm concerned because my application varies from 0 - 30W, depending on configuration and I certainly don't want a hum at low power consumption times.
Kind Regards,
StudentSA