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DagNabbit! Heater blower is toast! (to be archived)
Posted 04 February 2002 - 02:51 PM
Using a IC555 timer as an astable oscillator firing a FET ?
The three positions on the switch could be used for three resistance value to change the freq of the ocillator and thus the speed of the blower
Come on FD -kick it out mate
Posted 04 February 2002 - 04:48 PM
After reading the other posts it might just be easier to get some resistors from digi-tech and rig something in there. Possibly less hassle, maybe not as much fun though. I just think the oscillator/FET switch would be kinda fun...just gotta find the time. I'm still trying to find the resistor block in the car!
Posted 04 February 2002 - 05:00 PM
how about both guys named "Forrest" Mims and Cook
Hey shoot me an email and I'll get ya hooked up with where the block is.
Posted 04 February 2002 - 08:53 PM
Posted 04 February 2002 - 09:16 PM
Posted 05 February 2002 - 09:36 AM
Resistance/Voltage readings on Block
Coils are in series. Smallest guage wire is coil A; coils B and C look about the same but about double the wire diameter.
Coil A                Coil B                Coil C                Total
1.1 ohm        0.9 ohm        0.7 ohm        2.7 ohm
(all resistance readings taken cold)
Speed 1 (lowest)        3.1V                2.0V                1.4V                6.5V
Speed 2                        0.3V                3.0V                2.0V                5.2V
Speed 3                        0.2V                0.1V                2.9V                3.2V
Speed 4 (highest)        0.1V                0.08V                0.05V                0.3V
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