Hi folks,
I would like to use a comparator LM339 to drive a power MOSFET.
If the input voltage is above my threshold -> gate HIGH - mosfet ON - the motor runs - LEDON ON - LED OFF OFF
If input voltage is below the threshold -> gate LOW - mosfet OFF - the motor stops - LEDOFF ON - LEDON OFF
LEDs are driven correctly.
But Pin1 that drives the MOSFET is LOW and I am not able to drive the MOSFET. WHYYYYYYY
What I am doing so wrong
For example, VIN = 11V ----> V2 = 9.6V (so the leds work just fine) BUT the pin for the gate has V1 = 0 !!
Many thanks in advance for your help!!!
Notes.
Yes I am aware the mosfet I use is not a logic transistor who need 10V and proper temperature management ... but is ok in my application even if Vgs is in line with VCC <10V