I use this one: http://repeater.w4zt.com/circuits/fanptt.html Modify it as you see fit.
I also put a White-Rodgers fixed setting temperature switch (3F01-111 which closes at 110F and opens at 90F), available from Grainger http://grainger.com, in parallel with the relay and in contact with the heat sink slab to keep the fan(s) running if the heat sink is still hot after the time-out period. Merry Christmas, Tony W4ZT At 12:04 AM 12/25/2003, you wrote: >I need a simple circuit for a repeater PA fan controller with delay >time out. I did a search, but found nothing. Thanks de David > > > > > > >Yahoo! Groups Links > >To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > >To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > >Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
