Home » Audio » Group Build » Ground isolated from chassis - now it's an AM radio
Re: now it's an AM radio [message #30899 is a reply to message #30890] Wed, 09 March 2005 14:08 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18793
Registered: January 2001
Illuminati (33rd Degree)

Good idea about the small value ceramics. It's amazing how much RF is present on the power line. The AC power lines are a nice long antenna, and the power supply rectifier is a good detector. Electrolytics in the supply filter don't shunt much RF because internal resistance grows too high at high frequencies. Open up the input, and the amp is great for playing the 50kW boomer station in the area.


 
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