Saturday 29 March 2014

gpio - 1.5V-rated MOSFET doesn't react to a gate input of 1.8V


I am not really an electronics specialist, but a software engineer (so excuses if I 'm asking stupid questions).


I am trying to use a microcontroller GPIO output rated at 1.8V. When this pin becomes high, I want to enable a 12V relay. I am using a N-channel MOSFET from freetronics


The specs for the MOSFET can be found here.


For some reason the 1.8V seem insufficient to drive the MOSFET although it is specified for 1.5V min. I've tried a standalone setup using a 1.5V AA battery and that doesn't work either. But if I apply 3.3V with the same setup, it works (just so you know my wiring is OK).


Unfortunately my microcontroller (Intel Edison) only has 1.8V GPIOs.



Am I missing something? How can I make this work? Should I use a different MOSFET? And if so, which one?


Your help is much appreciated.




No comments:

Post a Comment

arduino - Can I use TI's cc2541 BLE as micro controller to perform operations/ processing instead of ATmega328P AU to save cost?

I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...