[Collins] Fan speed control

[K7PUR]

>From time to time, there has been some discussions about fan speed control. 
Lately I've come into some little circuit boards supporting a pair of 
thyristors for AC speed control.  I added a little pot making it self 
contained hovever if desired it could be left off for remote speed control. 
The load triac is rated at 400 vac 0.8 amps.  A picture is available at: 
http://azlinden.com/image/AC_speed.jpg  .  If anyone would be interested in 
one, I'll sell them for $10 shipped.

JR Linden  K7PUR
Cave Creek, AZ