[RFI] triac interference

[John Irwin]

dudes
I am constructing a power supply that will use a triac for voltage control.  This unit causes a sound like hissing or light frying on a am radio very near the unit. 
I wish to construct a filter to kill this interference off.  I do not want to purchase a ready made filter.  I understand the unit should be in a shielded minibox and the leads filtered.  anyone have the circuit values for filter chokes and capacitors to fix this problem .and where does one  place the parts ?  on the ac input ,ac output lines?  on the wires to the triac[gate] or across the whole assembly?    The current flow will be 10-14 amps.  Used on 240vac.  anyone actually succeed in doing  something like this?
 
john kb9tc
 
  

		
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