[Amps] Kenwood 922-A

[R.Measures]

Doug --  If the original AC fan quit on my TL-922, I would Not be 
looking for an exact replacement,   EBM/Papst's 5200N - series DC 
brushless fan is 127mm diameter, the same as the 922's original fan.  
The needed 12Vdc to run a 5200N fan can come by FWB-rectifying & 
filtering the 11Vac fil winding.  The advantage of a DC-brushless fan 
is that it will push as much air running the 922 from 50Hz mains as 
from 60Hz mains.  This overcomes the 922's well-known problem of 
running too damned hot on 50Hz mains.  .  Also, it is easy to make a DC 
fan's speed vary according to temperature by placing a thermistor in 
the exhaust airflow to control a power transistor which in turn 
controls the V fed to the DC motor.  Thus, the hotter the air, the 
faster the fan turns.  Is this cool, or what.  //  A good source for 
EBM/Papst fans is Mouser  --- www.mouser.com/ebm-papst  p.1166.  The 
price is $47.34
- cheers

On Aug 15, 2004, at 6:28 AM, Doug Cain wrote:

> I have a Kenwood TL922-A and the fan quit. What CFM fan should I look 
> for?
> Doug KA5ROW
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Richard L. Measures, AG6K, 805.386.3734.  www.somis.org