[R-390] OT? Dimmer buzz, solution?

[JMILLER1706 at cfl.rr.com]

http://www.lutron.com/applicationnotes/360484.pdf

It is probably a pair of high-Q coils, such as a toroid, in series with 
each line that will handle the AC current, combined with filter 
capacitors across the line and to ground.  

----- Original Message -----
From: Dave or Debbie Metz <dmetz at ntelos.net>
Date: Friday, July 1, 2005 10:21 am
Subject: [R-390] OT?  Dimmer buzz, solution?

> While this is probably not within the parameters of heavy iron, I 
> do have a 
> question for the collective wisdom of this esteemed group. I have 
> been 
> haunted for years by lamp dimmer buzz radiated as RF that gets 
> picked up 
> with my basement hobby an the AM that the R-390 wants to hear.   
> Recently, 
> I purchased a Lutron Lamp Debuzzer Coil  LDC-10-TCP in another 
> attempt to 
> eliminate this radiated hash. Low and behold the $110 investment 
> worked 
> fantastically!  Now what I want to know is how to build such an 
> animal for 
> a lot less than $110!   All there is to this is a box about the 
> size of a 
> smaller ballast transformer with two wires. It goes in series 
> between the 
> dimmer and the light load. They have very specific amperage 
> ratings , 
> 400-600 watts, 600-1200 watt, and 1200-1920 watts depending upon 
> the needed 
> load range.  It sure is great to now have the XYL upstairs 
> watching TV with 
> a dimmed light and I can listen to the DX BC band on the 390!  
> There has to 
> be a cheaper solution for the rest of my dimmed light circuits.
> 73's
> dave
> 
> 
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