Re: Low Noise Power Supply

Paul Evans W4/VP9KF

Surprisingly, I have two MFJ 4125s and they are quiet electrically.
I have also added a thermistor controlled fan speed controller to them so that they are silent (sonically) when ticking over and proportionately run the fan up with load. As supplied they run the fan all the time on the 12V generated at the output which is annoying (I haven't found any other PSUs that run a fan controller, maybe I should sell them!!!?).

73, Paul Evans G4BKI [VP9KF]

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