I want to replace a fan in my television with a much better and quieter fan.
The issue is the original fan uses a pass/fail monitoring circuit that puts out -10.88VDC at any RPM, then produces 0V when the fan stops.
The fan I want to install is a standard PC fan with RPM monitoring.
The fan runs at 2000 RPM.
I want to build a small circuit that will produce the -10.88VDC for the Sensor at full fan speed, and cut the power if it drops below, say 1500RPM.
I was hoping for the added security of it warning me if the fan is slow, not only if it is stopped.
Could I use a frequency to voltage IC for this, with a potentiometer to adjust it?
Thanks!
The issue is the original fan uses a pass/fail monitoring circuit that puts out -10.88VDC at any RPM, then produces 0V when the fan stops.
The fan I want to install is a standard PC fan with RPM monitoring.
The fan runs at 2000 RPM.
I want to build a small circuit that will produce the -10.88VDC for the Sensor at full fan speed, and cut the power if it drops below, say 1500RPM.
I was hoping for the added security of it warning me if the fan is slow, not only if it is stopped.
Could I use a frequency to voltage IC for this, with a potentiometer to adjust it?
Thanks!