[sdiy] EM radiation -- current or power ?

[Ian Fritz]

At 12:31 AM 12/18/2010, Andre Majorel wrote:
>Does the amount of EM radiation depend on current or power ?
>
>In other words, will two wires carrying 1 W at 18 VAC induce
>more 50 Hz hum in neighbouring audio cables and circuits than
>two wires carrying 1 W at 230 VAC ?
>
>In other other words, are there any drawbacks to putting the
>power transformer and the rest of the power supply in separate
>boxes ?

You might want to consider including the rectifiers and filter caps in the 
same box as the transformer.  This gives you a "raw" dc supply that you can 
connect to local regulators at your module box(es).

Ian