Great post Kijanki.
I would only add that they are noisy (produce EM/RF) and they may affect other sensitive digital equipment connected on the same mains circuit (SMPS tend to have less isolation from mains than conventional).
I would only add that they are noisy (produce EM/RF) and they may affect other sensitive digital equipment connected on the same mains circuit (SMPS tend to have less isolation from mains than conventional).