Current shunt monitor modulates fan speed / Asni Lidia Ishak and Norhalinda Shoib

Shak, Asni Lidia I and Shoib, Norhalinda (2005) Current shunt monitor modulates fan speed / Asni Lidia Ishak and Norhalinda Shoib. [Student Project] (Unpublished)


Current- shunt monitor modulates fan speed is a system design to control the value of current through the circuit. This project wants to show that the movements of fan are base on the current than the temperature. The first question really is, what are we trying to do with the fan control circuit? Our goal is to reduce fan noise and control their speed.
In this fan control circuit the important device are current-shunt-monitor ICs like INA168 where it must be connected to current-shunt resistors at supply voltages of up to 60 V. The basic function of this IC are useful in a wide range if circuitry. The current shunt resistor is a device that can give any value resistor where will increase or decreasing the current flow. Put a resistance in series with the fan, creating a voltage drop and it will affect the speed of fan. What makes the current shunt monitor IC unique is that when it derives its power supply from a low voltage, say 5V, the inputs can still be connected to a shunt resistor at a much higher voltage.
Load is the element where we will connect it series to the CPU. It can be chance with another device. For example we can use resistor as the load but the value of resistively must be high. This project was design to make sure all components in CPU or other electric device always cooling.


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