[Milsurplus] Switching power supplies

Robert N. Newberry N1XBM at amsat.org
Wed Jul 25 11:09:47 EDT 2012


Just an update, the switching supply was way too noisy. I had two linear 12 volt astrons that I wired up for 24 volts. There was a huge difference between the two power supplies. So much so that the switcher was wiping out weak stations were the linear I could hear the weaker stations. The noise with the switcher was worst in the AM broadcast band up thru 75M. Things got better around 40M. With the linear I had no issues thru the entire range.

Just thought I would post my results.

Thanks
N1XBM


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