[Elecraft] Re: Elecraft digest, Vol 4 #379 - 26 msgs

[lhlousek]

>>I also own a MFJ-4225, but the (FAN) noise in it is very =
objectionable! <<

The little MFJ supplies are acoustically loud but are the only switchers =
I've tried that don't put out hash somewhere in the HF bands.  Adding a =
51 ohm 1/2 W resistor to the fan reduces the fan noise to a whisper and =
will still keep the heatsinks adequately cool running CW at ~22A..  If =
you are checking this, don't touch the heatsinks with the supply plugged =
in and switched on as they are electrically hot.=20

Lou W7HV

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