[Amps] Re Direct rectification of AC mains to derive the amp, VDD, supply
Jim Brown
jim at audiosystemsgroup.com
Fri Sep 20 22:10:31 EDT 2013
On 9/20/2013 8:33 AM, Carl wrote:
> So how do you filter out the harmonics?
You don't. Proper wiring of both power and electronic systems prevents
them from coupling into systems. One "proper" way is balanced
connections for audio circuits. When unbalanced wiring is used, all
interconnected equipment should be bonded together with short, fat
copper, and should be powered from the same outlet (or outlets that
share the same green wire back to the panel).
Another important element of "proper" is the power system itself, and
the bonding of power system grounds to all other grounds in a facility
(and which is also consistent with best engineering practice for
lightning safety). In other words, you give that current a path that
does not include your system wiring.
73, Jim K9YC
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