[Amps] Controlling blower fan speed...

[Ron]

On the FT-101 there was a mod to drop the fan speed on receive.  It was
a simple resistor to drop the AC voltage to the fan causing more slip
and slowing the fan speed.  It worked fine.
---
Ron


On Sat, 2002-11-16 at 01:24, thaxton@ptgroup.com wrote:
> I'd like to hear from anyone who has constructed/ designed/jury-
> rigged, a fan speed controler for the tubes in their amp.
> 
> I found a couple of squirell cage blowers that I'd like to adapt and 
> control their speed for my amp.  The oem blower does about 
> 30cfm.  The blowers I picked up are 50 and 60cfm blowers.  I'd like 
> to be able to control their speed and reduce their output when I'm 
> just loafing, i.e. 500watts or less, and then have the fans crank up 
> when I kick in more power, i.e. 600 to 1500 watts.  All of this 
> perhaps to be controlled by a temperature sensor above and/or 
> around the tubes of my amp.
> 
> Has anybody developed a methodology to do this??  Any help, 
> pointers to info, real life experience, advice, would be appreciated.
> 
> thanks....
> 
> Don/N0FGK
> 
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