[RFI] Quiet DC Supply For Low Voltage Lighting ??

[Jim Brown]

Switching power supplies for low voltage lighting are notoriously noisy. 
Electrical supply houses sell them as "electronic transformers;" they 
are unlabeled, no-name boxes, carry no FCC or other EMC certification, 
and are noisy pigs. I inherited several in the home I bought here in 
California, and ever since have been trying to replace them. Real 
transformers are far too large to fit in the electrical back box, so an 
SMPS is the only practical alternative.

Does anyone know of a quiet SMPS for this application? The lamps in the 
fixtures need about 2A at 24V, could be AC or DC.

Another option I've been pursuing is finding LED lamps that fit these 
fixtures; they'll require far less current, so a suitable PSU could be a 
lot smaller. I'm lighting my shack with five LED strips from Wired 
Communications, a small biz that has been exhibiting at Pacificon and 
Visalia for several years. The combined current draw is only 1.2 A from 
the 12V system in my shack.

73, Jim K9YC