I lately got a 48V 350W SMPS from Chinese manufacturer MEISHILE. When I started it, my FM radio went crazy, even more than 5 meter away.
I installed some ferrite ring in the wire to the amp, which reduced this effect quite good and have no problems with it serving TPA3255 amps.
Anyway, a mixed feeling stayed, also the permanent running fan is audible.
So I decided to go for a MEANWELL product, which is considered good quality, maybe the best with China SMPS. Searching the options I noticed their new line with "N2" at the end of the model code, in my case the MEAN WELL LRS-600N2-48
It is different from the "normal" LRS supply, in having a 100% over current capability for 5 seconds. Usually such a huge peak helps to start up large inductive or capacitve loads. So it can give an impressive 1.2kW for a few seconds. This should fit well with an audio amp. It has a temperature switched fan, too.
I'm no expert on SMPS, so some ideas would be welcome. Also some might find this product line interesting for their own builds.
I installed some ferrite ring in the wire to the amp, which reduced this effect quite good and have no problems with it serving TPA3255 amps.
Anyway, a mixed feeling stayed, also the permanent running fan is audible.
So I decided to go for a MEANWELL product, which is considered good quality, maybe the best with China SMPS. Searching the options I noticed their new line with "N2" at the end of the model code, in my case the MEAN WELL LRS-600N2-48
It is different from the "normal" LRS supply, in having a 100% over current capability for 5 seconds. Usually such a huge peak helps to start up large inductive or capacitve loads. So it can give an impressive 1.2kW for a few seconds. This should fit well with an audio amp. It has a temperature switched fan, too.
I'm no expert on SMPS, so some ideas would be welcome. Also some might find this product line interesting for their own builds.
