[Elecraft] OT: fan control in MFJ-4225MV switching P/S

[Kenneth A. Christiansen]

I used a 5 volt regulator on my MFJ 4225 to slow down the fan. This allows
the fan to start reliably at any voltage. I have run mine and my K2-100 this
way for at least 5 years with no problem on SSB, CW and DIGITAL.

73
Ken W0CZ

Bill NZ0T Wrote
<As I'm not a very technical person I just used a couple of resistors in
<parallel to slow the fan down in my 4225.  I can't remember the values this
<early in the morning but it seems to be working just fine.  The supply does
<run a little warmer but not hot and the fan is no longer heard.
<
<Bill NZ0T