Hi,
Recently i was testing the functionality of a P channel mosfet.
1. I applied 3.3V to the source, varied the gate voltage from 0 to 5V. Till the gate voltage is 2.5 or 2.8 Mosfet was ON (I have put a resistor from drain to GND and checked the voltage across it)..
Inference:
Vgs<0 then it will be ON
Vgs>=0 then it will be OFF.
2. Now I applied 3.3V to Drain, varied gate voltage from 0 to 8V(I have put a resistor from source to GND and checked the voltage across it). The Mosfet was ON even if fthe gate voltage is more than 3.3V. How is this?
Did i do any mistake?
Please explain it to me.
Recently i was testing the functionality of a P channel mosfet.
1. I applied 3.3V to the source, varied the gate voltage from 0 to 5V. Till the gate voltage is 2.5 or 2.8 Mosfet was ON (I have put a resistor from drain to GND and checked the voltage across it)..
Inference:
Vgs<0 then it will be ON
Vgs>=0 then it will be OFF.
2. Now I applied 3.3V to Drain, varied gate voltage from 0 to 8V(I have put a resistor from source to GND and checked the voltage across it). The Mosfet was ON even if fthe gate voltage is more than 3.3V. How is this?
Did i do any mistake?
Please explain it to me.