A
amdx
I put this circuit together over twelve years ago.
I have it installed on my furnace/air condition control.
I have a momentary switch near the thermostat, when I
push the switch the furnace or air will come on for about
4 minutes (plus or minus). I move an alligator clip
depending on season, you can put in a switch.
I use it rather than turning the heat/air up and down,
for a short comfort adjustment.
It runs from a 9 volt battery and has very low standby current,
about 80 nanoamps. The battery lasts two or three years.
Others can modify for different purposes. If you think of another
use, please post it.
MikeK
http://i395.photobucket.com/albums/pp37/Qmavam/Furnacebumpcircuit.jpg
I have it installed on my furnace/air condition control.
I have a momentary switch near the thermostat, when I
push the switch the furnace or air will come on for about
4 minutes (plus or minus). I move an alligator clip
depending on season, you can put in a switch.
I use it rather than turning the heat/air up and down,
for a short comfort adjustment.
It runs from a 9 volt battery and has very low standby current,
about 80 nanoamps. The battery lasts two or three years.
Others can modify for different purposes. If you think of another
use, please post it.
MikeK
http://i395.photobucket.com/albums/pp37/Qmavam/Furnacebumpcircuit.jpg