Hey,

I built up the following circuit and for some reason I received VG = 0.38V, instead of VG = VCC/2.

I have measured the resistance of RG2 when it was connected to the circuit, and the Fluke read 3.1KΩ.

When I picked up RG1=RG2=100Ω, then VG was indeed VCC/2.

Could someone explain it to me please?
Does the Gate-Source have some kind of resistance? (around 3KΩ)

Thank you.

 

Hello,

Did you connect it correctly?

Greetings,
Bertus

 

You have probably damaged your MOSFET. Try a new one in the circuit.

 

I think electrician has nailed it. Extra care should be used when handling MOSFET devices. They are much more likely to be damaged by electro-static discharge than their BJT cousins.

hgmjr