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How to Control Speed of DC Motor using Arduino, MOSFET and Potentiometer?
Рет қаралды 2,965
Күн бұрынCode and Circuit: circuitdigest....
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@grinn585 2 ай бұрын
just curious, why do we need an arduino for this? can't you just use mosfet + pot and it will function the same?
@Circuitdigest 2 ай бұрын
If you use the mosfet with just a pot without the PWM, you control only within the ohmic region.Even there you would be wasting energy since the mosfet will act like a resistor and will generate a lot of heat.
@oret2024 3 ай бұрын
10qs sir!I want to do this project how much money I have to invest?
@Circuitdigest 2 ай бұрын
Hi, Components required are listed on the project page you may use that to check the total cost.
@moganthkumar5831 3 ай бұрын
What are those resistors for ? What is its use ?
@Circuitdigest 3 ай бұрын
Pull down resistor is there to make sure that the MOSFET is fully turned off and the gate resistor is used to control over-current in gate drivers and to reduce overshoot between the drain and source during switching (EMI noise-reduction). The switching time (rise and fall time) of MOSFET varies depending on the resistor of the connected gate.
@TheHaykokalipsis 2 ай бұрын
@@Circuitdigest Why not explain it in video and make it simpler to understand?
@drelectronics13 3 ай бұрын
Doesn't mosfet already have inbuilt diode
@Circuitdigest 3 ай бұрын
The flyback diode is connected across the motor not across the mosfet.
@ajmal_thagzeen 3 ай бұрын
Can upload automatic motor speed decrease
@Circuitdigest 3 ай бұрын
That what shows at the beginning of the video
@joshuvajohnvarghese2372 3 ай бұрын
1k for gate is really high. Gate resistor should be around 20 to 50 ohms
@Circuitdigest 3 ай бұрын
With minimum Vtgh and rise time of 10nS, Ig = (1470pF * (5V - 2V)) / (10ns) = 0.42mA. With 1K resistor the current limit will be 5mA at 5V. So the 1K resistor is more than enough and will work just fine.
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