Simple temperature regulated FAN speed controller

This regulator uses a P-FET to change the positive supply voltage to a FANan NTC resistor mounted on the device that needs cooling will change the fan speed,the temperature on the heat sink will therefore be constant, while the FAN speed will change, depending on power disipated

The RPM output signal from most FAN types will continue to function, due to the positve voltage regulation.There is many other ways to do this, but since I have fine access to P-FETS and they have super hight gain, a perfect solution !

The Fan regulator schematic, the gate capasitors filter the NTC voltage so regulation is nice smooth,The output capasitor remove FAN noise when it is running on low voltage, the FAN draw it's current in pulses so without this cap it will noise.If you have a 10K NTC you use a 10-22K trimmer, if you have a 22K NTC use 22-47K trimmer, 47K NTC use 47-100K trimmer and so on.

Here is the PCB and components placement, seen from top side.

Here are all the components you need.

Components on PCB.

Be carefull to use heat shrink tube to make a good looking NTC cable connection.

Now ready to install

It can be installed on an unused rear plate.

Maybe it is a better idea to solder wires and connector for MOBO input like this.

It can also be installed in an unused plastic front plate.

if you are carefull, it is possibe to drill the holes from rear side, with out making scratches.

Nice close up picture.

The switch short the FET to make MAX fan speed in position up, the LED is then RED,position down, LED is green, and fan speed is now controlled by the preset temperature set using the variable resistor.

The two green wires makes the FET short circuit via the switch.

The NTC temperature sensor is glued on the bottom side of the huge VULCANO 7 (TM) cooler, using araldite glue,the alu surface was cleened using sandpaper first, so that the glue will work good.

The original Vulcano FAN NTC was removed and the two wires for that NTC was soldered together, and secured with a bit heatshrink tube.3 new wires and new connector was made for the fan, length 50 cm to reach front panel mounted new homemade regulator.

Here it is complete.

It is now possible to set any CPU working temperature we desire,The regulator will keep same temperature no matter what CPU loading we make..we tried with 47C max load, then the fan speed was about 3000 as usual.then we enabled the NB cooling bit to set the CPU idle, now almost instantly,the fan speed started to go down and down and after 20 sec it stopped !!! WOW what a dream..

CPU tested: XP2000 slightly overclocked from 1667 to 1800 MHz !!

Greatings to Snow !! I hope you like your new fan controller :-)

TRADUCCION

temperatura regulada simple controlador de velocidad de FAN

This regulator uses a P-FET to change the positive supply voltage to a FAN Este regulador utiliza un P-FET para cambiar la tensión de alimentación positiva a una FAN an NTC resistor mounted on the device that needs cooling will change the fan speed, una resistencia NTC montado en el dispositivo que necesita refrigeración cambiará la velocidad del ventilador, the temperature on the heat sink will therefore be constant, while the FAN speed will

change, depending on power disipated la temperatura en el disipador de calor por lo tanto, ser constante, mientras que la velocidad del ventilador va a cambiar, dependiendo de la potencia disipated

The RPM output signal from most FAN types will continue to function, due to the positve voltage regulation. La señal de salida de la mayoría de los tipos de RPM FAN va a seguir funcionando, debido a la regulación de voltaje positve. There is many other ways to do this, but since I have fine access to P-FETS and they have super hight gain, a perfect solution ! Hay muchas otras maneras de hacer esto, pero desde que tienen acceso bien a P-FETS y tienen ganancia de altura super, una solución perfecta!

The Fan regulator schematic, the gate capasitors filter the NTC voltage so regulation is nice smooth, El regulador del ventilador esquemática, la puerta de capasitors filtro de la tensión de NTC para la regulación es agradable suave, The output capasitor remove FAN noise when it is running on low voltage, the FAN draw it's current in pulses so without this cap it will noise. La salida de capasitor quitar ruido del ventilador cuando se está ejecutando en baja tensión, la FAN es llamar la corriente en pulsos de manera que si no se tapa el ruido. If you have a 10K NTC you use a 10-22K trimmer, if you have a 22K NTC use 22-47K trimmer, 47K NTC use 47-100K trimmer and so on. Si usted tiene una NTC 10K se utiliza un condensador de ajuste 10-22K, si usted tiene un uso de 22K trimmer NTC 22-47K, 47K uso NTC trimmer 47-100K, etc.

Here is the PCB and components placement, seen from top side. Aquí está el PCB y la colocación de componentes, vista desde el lado superior.

Here are all the components you need. Aquí están todos los componentes que necesita.

Components on PCB. Los componentes sobre el PCB.

Be carefull to use heat shrink tube to make a good looking NTC cable connection. Tenga cuidado de usar encogimiento del calor del tubo para hacer un buen aspecto NTC conexión de cable.

Now ready to install Ahora está listo para instalar

It can be installed on an unused rear plate. Puede ser instalado en una placa posterior sin usar.

Maybe it is a better idea to solder wires and connector for MOBO input like this. Tal vez sea una mejor idea a los cables de soldadura y el conector de entrada MOBO así.

It can also be installed in an unused plastic front plate. También se puede instalar en una placa frontal de plástico sin usar.

if you are carefull, it is possibe to drill the holes from rear side, with out making

scratches. si usted es cuidadoso, es possibe para perforar los agujeros de la parte trasera, con hacia fuera haciendo arañazos.

Nice close up picture. Niza de cerca la imagen.

The switch short the FET to make MAX fan speed in position up, the LED is then RED, El interruptor corta la FET para hacer la velocidad del ventilador en la posición MAX, el LED es entonces RED, position down, LED is green, and fan speed is now controlled by the preset temperature set using the variable resistor. posición hacia abajo, el LED es de color verde, y la velocidad del ventilador está controlada por la temperatura predefinida establece mediante la resistencia variable.

The two green wires makes the FET short circuit via the switch. Los dos cables verde hace que el circuito FET corta a través del interruptor.

The NTC temperature sensor is glued on the bottom side of the huge VULCANO 7 (TM) cooler, using araldite glue, El sensor de temperatura NTC está pegado en la parte inferior de la enorme VULCANO 7 (TM) más frías, utilizando pegamento Araldite, the alu surface was cleened using sandpaper first, so that the glue will work good. la superficie de aluminio con papel de lija se cleened primero, para que el pegamento se un buen trabajo.

The original Vulcano FAN NTC was removed and the two wires for that NTC was soldered together, and secured with a bit heatshrink tube. El original Vulcano FAN NTC se ha retirado y los dos cables para que se NTC soldadas entre sí, y se asegura con

un poco tubo termo. 3 new wires and new connector was made for the fan, length 50 cm to reach front panel mounted new homemade regulator. 3 nuevos cables y el conector de nuevo se hizo para el ventilador, longitud 50 cm hasta alcanzar el panel frontal del regulador caseros nuevos.

Here it is complete. Aquí está completo.

It is now possible to set any CPU working temperature we desire, Ahora es posible configurar cualquier CPU temperatura de trabajo que deseamos, The regulator will keep same temperature no matter what CPU loading we make.. El regulador mantendrá la misma temperatura, no importa lo que hacemos carga de la CPU .. we tried with 47C max load, then the fan speed was about 3000 as usual. tratamos con carga máxima 47C, entonces la velocidad del ventilador fue alrededor de 3000 como de costumbre. then we enabled the NB cooling bit to set the CPU idle, now almost instantly, entonces permitió a la Nota de refrigeración poco para ajustar la parada de la CPU, ya casi al instante, the fan speed started to go down and down and after 20 sec it stopped !!! la velocidad del ventilador empezó a ir hacia abajo y hacia abajo y después de 20 segundos que se detuvo! WOW what a dream.. WOW lo que un sueño ..

CPU tested: XP2000 slightly overclocked from 1667 to 1800 MHz !! CPU probado: XP2000 ligeramente overclockeado 1667 a 1800 MHz!

Greatings to Snow !! Greatings a Snow! I hope you like your new fan controller :-) Espero que os guste el nuevo controlador del ventilador :-)