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Speed controller for 8-9 A radiator motor

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crazybuoy

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I am going to use the speed controller (in attached image) for my 8-9 A 12V radiator motor. Is it better choice, if not, then which one would be better? Will it also cause to take less Amp from battery?

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Audioguru

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The 7555 has very low output current. The 2.2k output resistor can drive an N-channel Mosfet that can apply PWM speed control to the high current motor. PWM is an efficient way (very little current is wasted) to control the speed of a DC motor.
 

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