Adjust the width of the transistor

127

02:48:46

To run a dc motor by MOSFET you have to adjust the width of the transistor

published 4 years ago

HIGreg

4 years ago

The n-channel mosfet parameters result in a very high on resistance. Try increasing the width to 20um or higher. The motor will start to turn on. Better yet, find the parameters for a realistic NMOS device that would be used in this application.

gabidegabidegab

4 years ago

The starting current of this motor is to low. You can compute the current value passing through each MOS in saturated mode with this general relation : I = (1/2)Kpn (W/L)(Vgs - Vt)^2. So you can increase the current by increasing the Width as HIGreg said. https://www.google.com/url?sa=t&source=web&rct=j&url=https://inst.eecs.berkeley.edu/~ee105/fa05/handouts/discussions/Discussion5.pdf&ved=2ahUKEwjkguvPwOfzAhUKKBoKHf33AQgQFnoECA4QAQ&usg=AOvVaw3LNeWMR1LZPkokT4trojOL

arabonaz

4 years ago

I got it thank you HIGreg and gabidegabidegab

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